From 8e79ceaa7d3995df5a5dcf0ffdbd52ebe4c52163 Mon Sep 17 00:00:00 2001
From: Aleksa Vučković <aleksav013@gmail.com>
Date: Sun, 9 Jan 2022 18:50:48 +0100
Subject: Indentation

---
 src/c/gdt.c             |  10 +-
 src/c/heap.c            | 265 ++++++++++---------
 src/c/idt.c             |   3 +-
 src/c/keyboard.c        | 150 ++++++-----
 src/c/keymap.c          | 680 ++++++++++++++++++++++++------------------------
 src/c/paging.c          |  18 +-
 src/c/stack_protector.c |  14 +-
 src/c/stdio.c           |  28 +-
 src/c/string.c          |  48 ++--
 src/c/timer.c           |   6 +-
 src/c/tty.c             |  70 ++---
 src/c/vga.c             |  25 +-
 12 files changed, 663 insertions(+), 654 deletions(-)

(limited to 'src/c')

diff --git a/src/c/gdt.c b/src/c/gdt.c
index a9a745c..e3d2b4c 100644
--- a/src/c/gdt.c
+++ b/src/c/gdt.c
@@ -36,11 +36,11 @@ void init_gdt_table()
     gdtp.size=sizeof(gdt)-1;
     gdtp.offset=(uint32_t)&gdt;
 
-    init_gdt_entry(0,0,0,0,0);					// null segment
-    init_gdt_entry(1,0xffffffff,0,0b10011010,0b11001111);	// code segment
-    init_gdt_entry(2,0xffffffff,0,0b10010010,0b11001111);	// data segment
-    init_gdt_entry(3,0xffffffff,0,0b11111010,0b11001111);	// user mode code segment
-    init_gdt_entry(4,0xffffffff,0,0b11110010,0b11001111);	// user mode data segment
+    init_gdt_entry(0,0,0,0,0);                              // null segment
+    init_gdt_entry(1,0xffffffff,0,0b10011010,0b11001111);   // code segment
+    init_gdt_entry(2,0xffffffff,0,0b10010010,0b11001111);   // data segment
+    init_gdt_entry(3,0xffffffff,0,0b11111010,0b11001111);   // user mode code segment
+    init_gdt_entry(4,0xffffffff,0,0b11110010,0b11001111);   // user mode data segment
 
     load_gdt(&gdtp);
 }
diff --git a/src/c/heap.c b/src/c/heap.c
index 3e1ba24..99d0a37 100644
--- a/src/c/heap.c
+++ b/src/c/heap.c
@@ -1,151 +1,146 @@
 #include<types.h>
 
 typedef struct _KHEAPBLOCKBM {
-	struct _KHEAPBLOCKBM	                *next;
-	uint32_t				size;
-	uint32_t				used;
-	uint32_t				bsize;
-        uint32_t                                lfb;
+    struct _KHEAPBLOCKBM    *next;
+    uint32_t                size;
+    uint32_t                used;
+    uint32_t                bsize;
+    uint32_t                lfb;
 } KHEAPBLOCKBM;
- 
+
 typedef struct _KHEAPBM {
-	KHEAPBLOCKBM			*fblock;
+    KHEAPBLOCKBM            *fblock;
 } KHEAPBM;
- 
+
 void k_heapBMInit(KHEAPBM *heap) {
-	heap->fblock = 0;
+    heap->fblock = 0;
 }
- 
+
 int k_heapBMAddBlock(KHEAPBM *heap, uintptr_t addr, uint32_t size, uint32_t bsize) {
-	KHEAPBLOCKBM		*b;
-	uint32_t		bcnt;
-	uint32_t		x;
-	uint8_t			*bm;
- 
-	b = (KHEAPBLOCKBM*)addr;
-	b->size = size - sizeof(KHEAPBLOCKBM);
-	b->bsize = bsize;
- 
-	b->next = heap->fblock;
-	heap->fblock = b;
- 
-	bcnt = b->size / b->bsize;
-	bm = (uint8_t*)&b[1];
- 
-	/* clear bitmap */
-	for (x = 0; x < bcnt; ++x) {
-			bm[x] = 0;
-	}
- 
-	/* reserve room for bitmap */
-	bcnt = (bcnt / bsize) * bsize < bcnt ? bcnt / bsize + 1 : bcnt / bsize;
-	for (x = 0; x < bcnt; ++x) {
-			bm[x] = 5;
-	}
- 
-	b->lfb = bcnt - 1;
- 
-	b->used = bcnt;
- 
-	return 1;
+    KHEAPBLOCKBM        *b;
+    uint32_t            bcnt;
+    uint32_t            x;
+    uint8_t             *bm;
+
+    b = (KHEAPBLOCKBM*)addr;
+    b->size = size - sizeof(KHEAPBLOCKBM);
+    b->bsize = bsize;
+
+    b->next = heap->fblock;
+    heap->fblock = b;
+
+    bcnt = b->size / b->bsize;
+    bm = (uint8_t*)&b[1];
+
+    /* clear bitmap */
+    for (x = 0; x < bcnt; ++x) {
+        bm[x] = 0;
+    }
+
+    /* reserve room for bitmap */
+    bcnt = (bcnt / bsize) * bsize < bcnt ? bcnt / bsize + 1 : bcnt / bsize;
+    for (x = 0; x < bcnt; ++x) {
+        bm[x] = 5;
+    }
+
+    b->lfb = bcnt - 1;
+    b->used = bcnt;
+    return 1;
 }
- 
+
 static uint8_t k_heapBMGetNID(uint8_t a, uint8_t b) {
-	uint8_t		c;	
-	for (c = a + 1; c == b || c == 0; ++c);
-	return c;
+    uint8_t        c;
+    for (c = a + 1; c == b || c == 0; ++c);
+    return c;
 }
- 
+
 void *k_heapBMAlloc(KHEAPBM *heap, uint32_t size) {
-	KHEAPBLOCKBM			*b;
-	uint8_t				*bm;
-	uint32_t			bcnt;
-	uint32_t			x, y, z;
-	uint32_t			bneed;
-	uint8_t				nid;
- 
-	/* iterate blocks */
-	for (b = heap->fblock; b; b = b->next) {
-	    //printf("size:%d,used:%d,bsize:%d,lfb:%d\n",b->size,b->used,b->bsize,b->lfb);
-		/* check if block has enough room */
-		if (b->size - (b->used * b->bsize) >= size) {
- 
-			bcnt = b->size / b->bsize;		
-			bneed = (size / b->bsize) * b->bsize < size ? size / b->bsize + 1 : size / b->bsize;
-			bm = (uint8_t*)&b[1];
-			//printf("bcnt:%d,bneed:%d,bm:%d\n",bcnt,bneed,bm);
- 
-			for (x = (b->lfb + 1 >= bcnt ? 0 : b->lfb + 1); x != b->lfb; ++x) {
-				/* just wrap around */
-				if (x >= bcnt) {
-					x = 0;
-				}		
- 
-				if (bm[x] == 0) {	
-					/* count free blocks */
-					for (y = 0; bm[x + y] == 0 && y < bneed && (x + y) < bcnt; ++y);
- 
-					/* we have enough, now allocate them */
-					if (y == bneed) {
-						/* find ID that does not match left or right */
-						nid = k_heapBMGetNID(bm[x - 1], bm[x + y]);
- 
-						/* allocate by setting id */
-						for (z = 0; z < y; ++z) {
-							bm[x + z] = nid;
-						}
- 
-						/* optimization */
-						b->lfb = (x + bneed) - 2;
- 
-						/* count used blocks NOT bytes */
-						b->used += y;
- 
-						return (void*)(x * b->bsize + (uintptr_t)&b[1]);
-					}
- 
-					/* x will be incremented by one ONCE more in our FOR loop */
-					x += (y - 1);
-					continue;
-				}
-			}
-		}
-	}
- 
-	return 0;
+    KHEAPBLOCKBM    *b;
+    uint8_t         *bm;
+    uint32_t        bcnt;
+    uint32_t        x, y, z;
+    uint32_t        bneed;
+    uint8_t         nid;
+
+    /* iterate blocks */
+    for (b = heap->fblock; b; b = b->next) {
+        /* check if block has enough room */
+        if (b->size - (b->used * b->bsize) >= size) {
+
+            bcnt = b->size / b->bsize;
+            bneed = (size / b->bsize) * b->bsize < size ? size / b->bsize + 1 : size / b->bsize;
+            bm = (uint8_t*)&b[1];
+
+            for (x = (b->lfb + 1 >= bcnt ? 0 : b->lfb + 1); x != b->lfb; ++x) {
+                /* just wrap around */
+                if (x >= bcnt) {
+                    x = 0;
+                }
+
+                if (bm[x] == 0) {
+                    /* count free blocks */
+                    for (y = 0; bm[x + y] == 0 && y < bneed && (x + y) < bcnt; ++y);
+
+                    /* we have enough, now allocate them */
+                    if (y == bneed) {
+                        /* find ID that does not match left or right */
+                        nid = k_heapBMGetNID(bm[x - 1], bm[x + y]);
+
+                        /* allocate by setting id */
+                        for (z = 0; z < y; ++z) {
+                            bm[x + z] = nid;
+                        }
+
+                        /* optimization */
+                        b->lfb = (x + bneed) - 2;
+
+                        /* count used blocks NOT bytes */
+                        b->used += y;
+
+                        return (void*)(x * b->bsize + (uintptr_t)&b[1]);
+                    }
+
+                    /* x will be incremented by one ONCE more in our FOR loop */
+                    x += (y - 1);
+                    continue;
+                }
+            }
+        }
+    }
+    return 0;
 }
- 
+
 void k_heapBMFree(KHEAPBM *heap, void *ptr) {
-	KHEAPBLOCKBM		*b;	
-	uintptr_t		ptroff;
-	uint32_t		bi, x;
-	uint8_t			*bm;
-	uint8_t			id;
-	uint32_t		max;
- 
-	for (b = heap->fblock; b; b = b->next) {
-		if ((uintptr_t)ptr > (uintptr_t)b && (uintptr_t)ptr < (uintptr_t)b + sizeof(KHEAPBLOCKBM) + b->size) {
-			/* found block */
-			ptroff = (uintptr_t)ptr - (uintptr_t)&b[1];  /* get offset to get block */
-			/* block offset in BM */
-			bi = ptroff / b->bsize;
-			/* .. */
-			bm = (uint8_t*)&b[1];
-			/* clear allocation */
-			id = bm[bi];
-			/* oddly.. GCC did not optimize this */
-			max = b->size / b->bsize;
-			for (x = bi; bm[x] == id && x < max; ++x) {
-				bm[x] = 0;
-			}
-			/* update free block count */
-			b->used -= x - bi;
-			return;
-		}
-	}
- 
-	/* this error needs to be raised or reported somehow */
-	return;
+    KHEAPBLOCKBM    *b;
+    uintptr_t       ptroff;
+    uint32_t        bi, x;
+    uint8_t         *bm;
+    uint8_t         id;
+    uint32_t        max;
+
+    for (b = heap->fblock; b; b = b->next) {
+        if ((uintptr_t)ptr > (uintptr_t)b && (uintptr_t)ptr < (uintptr_t)b + sizeof(KHEAPBLOCKBM) + b->size) {
+            /* found block */
+            ptroff = (uintptr_t)ptr - (uintptr_t)&b[1];  /* get offset to get block */
+            /* block offset in BM */
+            bi = ptroff / b->bsize;
+            /* .. */
+            bm = (uint8_t*)&b[1];
+            /* clear allocation */
+            id = bm[bi];
+            /* oddly.. GCC did not optimize this */
+            max = b->size / b->bsize;
+            for (x = bi; bm[x] == id && x < max; ++x) {
+                bm[x] = 0;
+            }
+            /* update free block count */
+            b->used -= x - bi;
+            return;
+        }
+    }
+
+    /* this error needs to be raised or reported somehow */
+    return;
 }
 
 KHEAPBM kheap;
@@ -154,15 +149,17 @@ void kheapinit()
 {
     k_heapBMInit(&kheap);
 }
+
 int kheapaddblock(uintptr_t addr,uint32_t size,uint32_t bsize)
 {
     return k_heapBMAddBlock(&kheap,addr,size,bsize);
 }
+
 void *kmalloc(uint32_t size)
 {
     return k_heapBMAlloc(&kheap,size);
-
 }
+
 void kfree(void *ptr)
 {
     k_heapBMFree(&kheap,ptr);
diff --git a/src/c/idt.c b/src/c/idt.c
index 005a05c..843c9da 100644
--- a/src/c/idt.c
+++ b/src/c/idt.c
@@ -42,6 +42,7 @@ void init_idt_entry(size_t num, uint32_t offset, uint16_t selector, uint8_t type
     idt[num].type_attr=type_attr;
     idt[num].offset2=(offset & 0xffff0000)>>16;
 }
+
 void add_idt_entry(size_t num,uint32_t offset)
 {
     init_idt_entry(num,offset,KERNEL_CODE,INTERRUPT_GATE_32);
@@ -59,7 +60,6 @@ void init_pic()
     ioport_out(PIC2_DATA_PORT, 0x01);
     ioport_out(PIC1_DATA_PORT, 0xff);
     ioport_out(PIC2_DATA_PORT, 0xff);
-
     ioport_out(PIC1_DATA_PORT, 0xFC);
 }
 
@@ -104,6 +104,5 @@ void init_idt_table()
     idtp.size=sizeof(struct idt_entry)*256-1;
     idtp.offset=(uint32_t)&idt;
 
-
     load_idt(&idtp);
 }
diff --git a/src/c/keyboard.c b/src/c/keyboard.c
index d082ec5..2218f09 100644
--- a/src/c/keyboard.c
+++ b/src/c/keyboard.c
@@ -28,6 +28,10 @@ void us_en_shift(char keymap[]);
 char charcode[256];
 char shift_charcode[256];
 bool ispressed[128];
+#define lshift 0x2A
+#define rshift 0x36
+#define lctrl 0x1D
+#define rctrl 0x1D
 
 void init_keyboard()
 {
@@ -56,15 +60,15 @@ void enter()
     printf("\n");
     if(buffer_index>0)
     {
-	tty(buffer[buffer_current]);
-	buffer_size[buffer_current]=buffer_index;
-	if(buffer_current==buffer_all) buffer_current=(++buffer_all);
-	else
-	{
-	    for(size_t i=0;i<BUFFER_SIZE;i++) buffer[buffer_all][i]='\0';
-	    buffer_current=buffer_all;
-	}
-	buffer_index=0;
+        tty(buffer[buffer_current]);
+        buffer_size[buffer_current]=buffer_index;
+        if(buffer_current==buffer_all) buffer_current=(++buffer_all);
+        else
+        {
+            for(size_t i=0;i<BUFFER_SIZE;i++) buffer[buffer_all][i]='\0';
+            buffer_current=buffer_all;
+        }
+        buffer_index=0;
     }
     prompt();
     return;
@@ -80,37 +84,34 @@ void keyup()
 {
     if(buffer_current>0)
     {
-	buffer_size[buffer_current]=buffer_index;
-	for(size_t i=0;i<buffer_index;i++) deletelast();
-	buffer_current--;
-	buffer_index=buffer_size[buffer_current];
-	printf("%s",buffer[buffer_current]);
+        buffer_size[buffer_current]=buffer_index;
+        for(size_t i=0;i<buffer_index;i++) deletelast();
+        buffer_current--;
+        buffer_index=buffer_size[buffer_current];
+        printf("%s",buffer[buffer_current]);
     }
 }
+
 void keydown()
 {
     if(buffer_current<buffer_all)
     {
-	buffer_size[buffer_current]=buffer_index;
-	for(size_t i=0;i<buffer_index;i++) deletelast();
-	buffer_current++;
-	buffer_index=buffer_size[buffer_current];
-	printf("%s",buffer[buffer_current]);
+        buffer_size[buffer_current]=buffer_index;
+        for(size_t i=0;i<buffer_index;i++) deletelast();
+        buffer_current++;
+        buffer_index=buffer_size[buffer_current];
+        printf("%s",buffer[buffer_current]);
     }
 }
+
 void keyleft()
 {
-
 }
+
 void keyright()
 {
-
 }
 
-#define lshift ispressed[0x2A]
-#define rshift ispressed[0x36]
-#define lctrl ispressed[0x1D]
-
 void keyboard_handler()
 {
     ioport_out(PIC1_COMMAND_PORT, 0x20);
@@ -118,45 +119,64 @@ void keyboard_handler()
 
     if (status & 0x1)
     {
-	uint8_t keycode = ioport_in(KEYBOARD_DATA_PORT);
-//	printf("%d\n",keycode);
-	if(keycode<0x80)
-	{
-	    ispressed[keycode]=1;
-	    if(keycode==0x0E) backspace();
-	    else if(keycode==0x1C) enter();
-	    else if(keycode==0x39) space();
-	    else if(keycode==72) keyup();
-	    else if(keycode==80) keydown();
-	    else if(keycode==75) keyleft();
-	    else if(keycode==77) keyright();
-	    else
-	    {
-		char c=charcode[keycode];
-		if(c!=' ')
-		{
-		    if(lctrl)
-		    {
-			if(c=='l')
-			{
-			    clear();
-			    prompt();
-			    printf("%s",buffer[buffer_current]);
-			    return;
-			}
-		    }
-		    if(lshift||rshift)
-		    {
-			c=shift_charcode[keycode];
-		    }
-		    buffer[buffer_current][buffer_index++]=c;
-		    printf("%c",c);
-		}
-	    }
-	}
-	else
-	{
-	    ispressed[keycode-0x80]=0;
-	}
+        uint8_t keycode = ioport_in(KEYBOARD_DATA_PORT);
+        if(keycode<0x80)
+        {
+            char c=charcode[keycode];
+            ispressed[keycode]=1;
+            // printf("%d ",&keycode);
+
+            switch(keycode)
+            {
+                case 0x0E:
+                    backspace();
+                    break;
+                case 0x1C:
+                    enter();
+                    break;
+                case 0x39:
+                    space();
+                    break;
+                case 72:
+                    keyup();
+                    break;
+                case 80:
+                    keydown();
+                    break;
+                case 75:
+                    keyleft();
+                    break;
+                case 77:
+                    keyright();
+                    break;
+
+                default:
+                    if(c!=' ')
+                    {
+                        if(ispressed[lctrl]||ispressed[rctrl])
+                        {
+                            if(c=='l')
+                            {
+                                clear();
+                                prompt();
+                                printf("%s",buffer[buffer_current]);
+                                return;
+                            }
+                        }
+                        if(ispressed[lshift]||ispressed[rshift])
+                        {
+                            c=shift_charcode[keycode];
+                        }
+                        buffer[buffer_current][buffer_index++]=c;
+                        printf("%c",c);
+                    }
+                    break;
+            }
+
+        }
+        else
+        {
+            ispressed[keycode-0x80]=0;
+        }
     }
 }
diff --git a/src/c/keymap.c b/src/c/keymap.c
index 5401be0..168d5f9 100644
--- a/src/c/keymap.c
+++ b/src/c/keymap.c
@@ -1,346 +1,346 @@
 void us_en(char keymap[])
 {
-    keymap[0x01]=' ';		//escape pressed
-    keymap[0x02]='1';		//1 pressed
-    keymap[0x03]='2';		//2 pressed
-    keymap[0x04]='3';		//3 pressed
-    keymap[0x05]='4';		//4 pressed
-    keymap[0x06]='5';		//5 pressed
-    keymap[0x07]='6';		//6 pressed
-    keymap[0x08]='7';		//7 pressed
-    keymap[0x09]='8';		//8 pressed
-    keymap[0x0A]='9';		//9 pressed
-    keymap[0x0B]='0';		//0 (zero) pressed
-    keymap[0x0C]='-';		//- pressed
-    keymap[0x0D]='=';		//= pressed
-    keymap[0x0E]=' ';		//backspace pressed
-    keymap[0x0F]=' ';		//tab pressed
-    keymap[0x10]='q';		//Q pressed
-    keymap[0x11]='w';		//W pressed
-    keymap[0x12]='e';		//E pressed
-    keymap[0x13]='r';		//R pressed
-    keymap[0x14]='t';		//T pressed
-    keymap[0x15]='y';		//Y pressed
-    keymap[0x16]='u';		//U pressed
-    keymap[0x17]='i';		//I pressed
-    keymap[0x18]='o';		//O pressed
-    keymap[0x19]='p';		//P pressed
-    keymap[0x1A]='[';		//[ pressed
-    keymap[0x1B]=']';		//] pressed
-    keymap[0x1C]='\n';		//enter pressed
-    keymap[0x1D]=' ';		//left control pressed
-    keymap[0x1E]='a';		//A pressed
-    keymap[0x1F]='s';		//S pressed
-    keymap[0x20]='d';		//D pressed
-    keymap[0x21]='f';		//F pressed
-    keymap[0x22]='g';		//G pressed
-    keymap[0x23]='h';		//H pressed
-    keymap[0x24]='j';		//J pressed
-    keymap[0x25]='k';		//K pressed
-    keymap[0x26]='l';		//L pressed
-    keymap[0x27]=';';		//; pressed
-    keymap[0x28]='\'';		//' (single quote) pressed
-    keymap[0x29]='`';		//` (back tick) pressed
-    keymap[0x2A]=' ';		//left shift pressed
-    keymap[0x2B]='\\';		//\ pressed
-    keymap[0x2C]='z';		//Z pressed
-    keymap[0x2D]='x';		//X pressed
-    keymap[0x2E]='c';		//C pressed
-    keymap[0x2F]='v';		//V pressed
-    keymap[0x30]='b';		//B pressed
-    keymap[0x31]='n';		//N pressed
-    keymap[0x32]='m';		//M pressed
-    keymap[0x33]=',';		//, pressed
-    keymap[0x34]='.';		//. pressed
-    keymap[0x35]='/';		/// pressed
-    keymap[0x36]=' ';		//right shift pressed
-    keymap[0x37]='*';		//(keypad) * pressed
-    keymap[0x38]=' ';		//left alt pressed
-    keymap[0x39]=' ';		//space pressed
-    keymap[0x3A]=' ';		//CapsLock pressed
-    keymap[0x3B]=' ';		//F1 pressed
-    keymap[0x3C]=' ';		//F2 pressed
-    keymap[0x3D]=' ';		//F3 pressed
-    keymap[0x3E]=' ';		//F4 pressed
-    keymap[0x3F]=' ';		//F5 pressed
-    keymap[0x40]=' ';		//F6 pressed
-    keymap[0x41]=' ';		//F7 pressed
-    keymap[0x42]=' ';		//F8 pressed
-    keymap[0x43]=' ';		//F9 pressed
-    keymap[0x44]=' ';		//F10 pressed
-    keymap[0x45]=' ';		//NumberLock pressed
-    keymap[0x46]=' ';		//ScrollLock pressed
-    keymap[0x47]='7';		//(keypad) 7 pressed
-    keymap[0x48]='8';		//(keypad) 8 pressed
-    keymap[0x49]='9';		//(keypad) 9 pressed
-    keymap[0x4A]='-';		//(keypad) - pressed
-    keymap[0x4B]='4';		//(keypad) 4 pressed
-    keymap[0x4C]='5';		//(keypad) 5 pressed
-    keymap[0x4D]='6';		//(keypad) 6 pressed
-    keymap[0x4E]='+';		//(keypad) + pressed
-    keymap[0x4F]='1';		//(keypad) 1 pressed
-    keymap[0x50]='2';		//(keypad) 2 pressed
-    keymap[0x51]='3';		//(keypad) 3 pressed
-    keymap[0x52]='0';		//(keypad) 0 pressed
-    keymap[0x53]='.';		//(keypad) . pressed
-    keymap[0x57]=' ';		//F11 pressed
-    keymap[0x58]=' ';		//F12 pressed
-    keymap[0x81]=' ';		//escape released
-    keymap[0x82]=' ';		//1 released
-    keymap[0x83]=' ';		//2 released
-    keymap[0x84]=' ';		//3 released
-    keymap[0x85]=' ';		//4 released
-    keymap[0x86]=' ';		//5 released
-    keymap[0x87]=' ';		//6 released
-    keymap[0x88]=' ';		//7 released
-    keymap[0x89]=' ';		//8 released
-    keymap[0x8A]=' ';		//9 released
-    keymap[0x8B]=' ';		//0 (zero) released
-    keymap[0x8C]=' ';		//- released
-    keymap[0x8D]=' ';		//= released
-    keymap[0x8E]=' ';		//backspace released
-    keymap[0x8F]=' ';		//tab released
-    keymap[0x90]=' ';		//Q released
-    keymap[0x91]=' ';		//W released
-    keymap[0x92]=' ';		//E released
-    keymap[0x93]=' ';		//R released
-    keymap[0x94]=' ';		//T released
-    keymap[0x95]=' ';		//Y released
-    keymap[0x96]=' ';		//U released
-    keymap[0x97]=' ';		//I released
-    keymap[0x98]=' ';		//O released
-    keymap[0x99]=' ';		//P released
-    keymap[0x9A]=' ';		//[ released
-    keymap[0x9B]=' ';		//] released
-    keymap[0x9C]=' ';		//enter released
-    keymap[0x9D]=' ';		//left control released
-    keymap[0x9E]=' ';		//A released
-    keymap[0x9F]=' ';		//S released
-    keymap[0xA0]=' ';		//D released
-    keymap[0xA1]=' ';		//F released
-    keymap[0xA2]=' ';		//G released
-    keymap[0xA3]=' ';		//H released
-    keymap[0xA4]=' ';		//J released
-    keymap[0xA5]=' ';		//K released
-    keymap[0xA6]=' ';		//L released
-    keymap[0xA7]=' ';		//; released
-    keymap[0xA8]=' ';		//' (single quote) released
-    keymap[0xA9]=' ';		//` (back tick) released
-    keymap[0xAA]=' ';		//left shift released
-    keymap[0xAB]=' ';		//\ released
-    keymap[0xAC]=' ';		//Z released
-    keymap[0xAD]=' ';		//X released
-    keymap[0xAE]=' ';		//C released
-    keymap[0xAF]=' ';		//V released
-    keymap[0xB0]=' ';		//B released
-    keymap[0xB1]=' ';		//N released
-    keymap[0xB2]=' ';		//M released
-    keymap[0xB3]=' ';		//, released
-    keymap[0xB4]=' ';		//. released
-    keymap[0xB5]=' ';		/// released
-    keymap[0xB6]=' ';		//right shift released
-    keymap[0xB7]='*';		//(keypad) * released
-    keymap[0xB8]=' ';		//left alt released
-    keymap[0xB9]=' ';		//space released
-    keymap[0xBA]=' ';		//CapsLock released
-    keymap[0xBB]=' ';		//F1 released
-    keymap[0xBC]=' ';		//F2 released
-    keymap[0xBD]=' ';		//F3 released
-    keymap[0xBE]=' ';		//F4 released
-    keymap[0xBF]=' ';		//F5 released
-    keymap[0xC0]=' ';		//F6 released
-    keymap[0xC1]=' ';		//F7 released
-    keymap[0xC2]=' ';		//F8 released
-    keymap[0xC3]=' ';		//F9 released
-    keymap[0xC4]=' ';		//F10 released
-    keymap[0xC5]=' ';		//NumberLock released
-    keymap[0xC6]=' ';		//ScrollLock released
-    keymap[0xC7]=' ';		//(keypad) 7 released
-    keymap[0xC8]=' ';		//(keypad) 8 released
-    keymap[0xC9]=' ';		//(keypad) 9 released
-    keymap[0xCA]=' ';		//(keypad) - released
-    keymap[0xCB]=' ';		//(keypad) 4 released
-    keymap[0xCC]=' ';		//(keypad) 5 released
-    keymap[0xCD]=' ';		//(keypad) 6 released
-    keymap[0xCE]=' ';		//(keypad) + released
-    keymap[0xCF]=' ';		//(keypad) 1 released
-    keymap[0xD0]=' ';		//(keypad) 2 released
-    keymap[0xD1]=' ';		//(keypad) 3 released
-    keymap[0xD2]=' ';		//(keypad) 0 released
-    keymap[0xD3]=' ';		//(keypad) . released
-    keymap[0xD7]=' ';		//F11 released
-    keymap[0xD8]=' ';		//F12 released
+    keymap[0x01]=' ';        //escape pressed
+    keymap[0x02]='1';        //1 pressed
+    keymap[0x03]='2';        //2 pressed
+    keymap[0x04]='3';        //3 pressed
+    keymap[0x05]='4';        //4 pressed
+    keymap[0x06]='5';        //5 pressed
+    keymap[0x07]='6';        //6 pressed
+    keymap[0x08]='7';        //7 pressed
+    keymap[0x09]='8';        //8 pressed
+    keymap[0x0A]='9';        //9 pressed
+    keymap[0x0B]='0';        //0 (zero) pressed
+    keymap[0x0C]='-';        //- pressed
+    keymap[0x0D]='=';        //= pressed
+    keymap[0x0E]=' ';        //backspace pressed
+    keymap[0x0F]=' ';        //tab pressed
+    keymap[0x10]='q';        //Q pressed
+    keymap[0x11]='w';        //W pressed
+    keymap[0x12]='e';        //E pressed
+    keymap[0x13]='r';        //R pressed
+    keymap[0x14]='t';        //T pressed
+    keymap[0x15]='y';        //Y pressed
+    keymap[0x16]='u';        //U pressed
+    keymap[0x17]='i';        //I pressed
+    keymap[0x18]='o';        //O pressed
+    keymap[0x19]='p';        //P pressed
+    keymap[0x1A]='[';        //[ pressed
+    keymap[0x1B]=']';        //] pressed
+    keymap[0x1C]='\n';        //enter pressed
+    keymap[0x1D]=' ';        //left control pressed
+    keymap[0x1E]='a';        //A pressed
+    keymap[0x1F]='s';        //S pressed
+    keymap[0x20]='d';        //D pressed
+    keymap[0x21]='f';        //F pressed
+    keymap[0x22]='g';        //G pressed
+    keymap[0x23]='h';        //H pressed
+    keymap[0x24]='j';        //J pressed
+    keymap[0x25]='k';        //K pressed
+    keymap[0x26]='l';        //L pressed
+    keymap[0x27]=';';        //; pressed
+    keymap[0x28]='\'';        //' (single quote) pressed
+    keymap[0x29]='`';        //` (back tick) pressed
+    keymap[0x2A]=' ';        //left shift pressed
+    keymap[0x2B]='\\';        //\ pressed
+    keymap[0x2C]='z';        //Z pressed
+    keymap[0x2D]='x';        //X pressed
+    keymap[0x2E]='c';        //C pressed
+    keymap[0x2F]='v';        //V pressed
+    keymap[0x30]='b';        //B pressed
+    keymap[0x31]='n';        //N pressed
+    keymap[0x32]='m';        //M pressed
+    keymap[0x33]=',';        //, pressed
+    keymap[0x34]='.';        //. pressed
+    keymap[0x35]='/';        /// pressed
+    keymap[0x36]=' ';        //right shift pressed
+    keymap[0x37]='*';        //(keypad) * pressed
+    keymap[0x38]=' ';        //left alt pressed
+    keymap[0x39]=' ';        //space pressed
+    keymap[0x3A]=' ';        //CapsLock pressed
+    keymap[0x3B]=' ';        //F1 pressed
+    keymap[0x3C]=' ';        //F2 pressed
+    keymap[0x3D]=' ';        //F3 pressed
+    keymap[0x3E]=' ';        //F4 pressed
+    keymap[0x3F]=' ';        //F5 pressed
+    keymap[0x40]=' ';        //F6 pressed
+    keymap[0x41]=' ';        //F7 pressed
+    keymap[0x42]=' ';        //F8 pressed
+    keymap[0x43]=' ';        //F9 pressed
+    keymap[0x44]=' ';        //F10 pressed
+    keymap[0x45]=' ';        //NumberLock pressed
+    keymap[0x46]=' ';        //ScrollLock pressed
+    keymap[0x47]='7';        //(keypad) 7 pressed
+    keymap[0x48]='8';        //(keypad) 8 pressed
+    keymap[0x49]='9';        //(keypad) 9 pressed
+    keymap[0x4A]='-';        //(keypad) - pressed
+    keymap[0x4B]='4';        //(keypad) 4 pressed
+    keymap[0x4C]='5';        //(keypad) 5 pressed
+    keymap[0x4D]='6';        //(keypad) 6 pressed
+    keymap[0x4E]='+';        //(keypad) + pressed
+    keymap[0x4F]='1';        //(keypad) 1 pressed
+    keymap[0x50]='2';        //(keypad) 2 pressed
+    keymap[0x51]='3';        //(keypad) 3 pressed
+    keymap[0x52]='0';        //(keypad) 0 pressed
+    keymap[0x53]='.';        //(keypad) . pressed
+    keymap[0x57]=' ';        //F11 pressed
+    keymap[0x58]=' ';        //F12 pressed
+    keymap[0x81]=' ';        //escape released
+    keymap[0x82]=' ';        //1 released
+    keymap[0x83]=' ';        //2 released
+    keymap[0x84]=' ';        //3 released
+    keymap[0x85]=' ';        //4 released
+    keymap[0x86]=' ';        //5 released
+    keymap[0x87]=' ';        //6 released
+    keymap[0x88]=' ';        //7 released
+    keymap[0x89]=' ';        //8 released
+    keymap[0x8A]=' ';        //9 released
+    keymap[0x8B]=' ';        //0 (zero) released
+    keymap[0x8C]=' ';        //- released
+    keymap[0x8D]=' ';        //= released
+    keymap[0x8E]=' ';        //backspace released
+    keymap[0x8F]=' ';        //tab released
+    keymap[0x90]=' ';        //Q released
+    keymap[0x91]=' ';        //W released
+    keymap[0x92]=' ';        //E released
+    keymap[0x93]=' ';        //R released
+    keymap[0x94]=' ';        //T released
+    keymap[0x95]=' ';        //Y released
+    keymap[0x96]=' ';        //U released
+    keymap[0x97]=' ';        //I released
+    keymap[0x98]=' ';        //O released
+    keymap[0x99]=' ';        //P released
+    keymap[0x9A]=' ';        //[ released
+    keymap[0x9B]=' ';        //] released
+    keymap[0x9C]=' ';        //enter released
+    keymap[0x9D]=' ';        //left control released
+    keymap[0x9E]=' ';        //A released
+    keymap[0x9F]=' ';        //S released
+    keymap[0xA0]=' ';        //D released
+    keymap[0xA1]=' ';        //F released
+    keymap[0xA2]=' ';        //G released
+    keymap[0xA3]=' ';        //H released
+    keymap[0xA4]=' ';        //J released
+    keymap[0xA5]=' ';        //K released
+    keymap[0xA6]=' ';        //L released
+    keymap[0xA7]=' ';        //; released
+    keymap[0xA8]=' ';        //' (single quote) released
+    keymap[0xA9]=' ';        //` (back tick) released
+    keymap[0xAA]=' ';        //left shift released
+    keymap[0xAB]=' ';        //\ released
+    keymap[0xAC]=' ';        //Z released
+    keymap[0xAD]=' ';        //X released
+    keymap[0xAE]=' ';        //C released
+    keymap[0xAF]=' ';        //V released
+    keymap[0xB0]=' ';        //B released
+    keymap[0xB1]=' ';        //N released
+    keymap[0xB2]=' ';        //M released
+    keymap[0xB3]=' ';        //, released
+    keymap[0xB4]=' ';        //. released
+    keymap[0xB5]=' ';        /// released
+    keymap[0xB6]=' ';        //right shift released
+    keymap[0xB7]='*';        //(keypad) * released
+    keymap[0xB8]=' ';        //left alt released
+    keymap[0xB9]=' ';        //space released
+    keymap[0xBA]=' ';        //CapsLock released
+    keymap[0xBB]=' ';        //F1 released
+    keymap[0xBC]=' ';        //F2 released
+    keymap[0xBD]=' ';        //F3 released
+    keymap[0xBE]=' ';        //F4 released
+    keymap[0xBF]=' ';        //F5 released
+    keymap[0xC0]=' ';        //F6 released
+    keymap[0xC1]=' ';        //F7 released
+    keymap[0xC2]=' ';        //F8 released
+    keymap[0xC3]=' ';        //F9 released
+    keymap[0xC4]=' ';        //F10 released
+    keymap[0xC5]=' ';        //NumberLock released
+    keymap[0xC6]=' ';        //ScrollLock released
+    keymap[0xC7]=' ';        //(keypad) 7 released
+    keymap[0xC8]=' ';        //(keypad) 8 released
+    keymap[0xC9]=' ';        //(keypad) 9 released
+    keymap[0xCA]=' ';        //(keypad) - released
+    keymap[0xCB]=' ';        //(keypad) 4 released
+    keymap[0xCC]=' ';        //(keypad) 5 released
+    keymap[0xCD]=' ';        //(keypad) 6 released
+    keymap[0xCE]=' ';        //(keypad) + released
+    keymap[0xCF]=' ';        //(keypad) 1 released
+    keymap[0xD0]=' ';        //(keypad) 2 released
+    keymap[0xD1]=' ';        //(keypad) 3 released
+    keymap[0xD2]=' ';        //(keypad) 0 released
+    keymap[0xD3]=' ';        //(keypad) . released
+    keymap[0xD7]=' ';        //F11 released
+    keymap[0xD8]=' ';        //F12 released
 }
 void us_en_shift(char keymap[])
 {
-    keymap[0x01]=' ';		//escape pressed
-    keymap[0x02]='!';		//1 pressed
-    keymap[0x03]='@';		//2 pressed
-    keymap[0x04]='#';		//3 pressed
-    keymap[0x05]='$';		//4 pressed
-    keymap[0x06]='%';		//5 pressed
-    keymap[0x07]='^';		//6 pressed
-    keymap[0x08]='&';		//7 pressed
-    keymap[0x09]='*';		//8 pressed
-    keymap[0x0A]='(';		//9 pressed
-    keymap[0x0B]=')';		//0 (zero) pressed
-    keymap[0x0C]='_';		//- pressed
-    keymap[0x0D]='+';		//= pressed
-    keymap[0x0E]=' ';		//backspace pressed
-    keymap[0x0F]=' ';		//tab pressed
-    keymap[0x10]='Q';		//Q pressed
-    keymap[0x11]='W';		//W pressed
-    keymap[0x12]='E';		//E pressed
-    keymap[0x13]='R';		//R pressed
-    keymap[0x14]='T';		//T pressed
-    keymap[0x15]='Y';		//Y pressed
-    keymap[0x16]='U';		//U pressed
-    keymap[0x17]='I';		//I pressed
-    keymap[0x18]='O';		//O pressed
-    keymap[0x19]='P';		//P pressed
-    keymap[0x1A]='{';		//[ pressed
-    keymap[0x1B]='}';		//] pressed
-    keymap[0x1C]='\n';		//enter pressed
-    keymap[0x1D]=' ';		//left control pressed
-    keymap[0x1E]='A';		//A pressed
-    keymap[0x1F]='S';		//S pressed
-    keymap[0x20]='D';		//D pressed
-    keymap[0x21]='F';		//F pressed
-    keymap[0x22]='G';		//G pressed
-    keymap[0x23]='H';		//H pressed
-    keymap[0x24]='J';		//J pressed
-    keymap[0x25]='K';		//K pressed
-    keymap[0x26]='L';		//L pressed
-    keymap[0x27]=':';		//; pressed
-    keymap[0x28]='\"';		//' (single quote) pressed
-    keymap[0x29]='~';		//` (back tick) pressed
-    keymap[0x2A]=' ';		//left shift pressed
-    keymap[0x2B]='|';		//\ pressed
-    keymap[0x2C]='Z';		//Z pressed
-    keymap[0x2D]='X';		//X pressed
-    keymap[0x2E]='C';		//C pressed
-    keymap[0x2F]='V';		//V pressed
-    keymap[0x30]='B';		//B pressed
-    keymap[0x31]='N';		//N pressed
-    keymap[0x32]='M';		//M pressed
-    keymap[0x33]='<';		//, pressed
-    keymap[0x34]='>';		//. pressed
-    keymap[0x35]='?';		/// pressed
-    keymap[0x36]=' ';		//right shift pressed
-    keymap[0x37]='*';		//(keypad) * pressed
-    keymap[0x38]=' ';		//left alt pressed
-    keymap[0x39]=' ';		//space pressed
-    keymap[0x3A]=' ';		//CapsLock pressed
-    keymap[0x3B]=' ';		//F1 pressed
-    keymap[0x3C]=' ';		//F2 pressed
-    keymap[0x3D]=' ';		//F3 pressed
-    keymap[0x3E]=' ';		//F4 pressed
-    keymap[0x3F]=' ';		//F5 pressed
-    keymap[0x40]=' ';		//F6 pressed
-    keymap[0x41]=' ';		//F7 pressed
-    keymap[0x42]=' ';		//F8 pressed
-    keymap[0x43]=' ';		//F9 pressed
-    keymap[0x44]=' ';		//F10 pressed
-    keymap[0x45]=' ';		//NumberLock pressed
-    keymap[0x46]=' ';		//ScrollLock pressed
-    keymap[0x47]='7';		//(keypad) 7 pressed
-    keymap[0x48]='8';		//(keypad) 8 pressed
-    keymap[0x49]='9';		//(keypad) 9 pressed
-    keymap[0x4A]='-';		//(keypad) - pressed
-    keymap[0x4B]='4';		//(keypad) 4 pressed
-    keymap[0x4C]='5';		//(keypad) 5 pressed
-    keymap[0x4D]='6';		//(keypad) 6 pressed
-    keymap[0x4E]='+';		//(keypad) + pressed
-    keymap[0x4F]='1';		//(keypad) 1 pressed
-    keymap[0x50]='2';		//(keypad) 2 pressed
-    keymap[0x51]='3';		//(keypad) 3 pressed
-    keymap[0x52]='0';		//(keypad) 0 pressed
-    keymap[0x53]='.';		//(keypad) . pressed
-    keymap[0x57]=' ';		//F11 pressed
-    keymap[0x58]=' ';		//F12 pressed
-    keymap[0x81]=' ';		//escape released
-    keymap[0x82]=' ';		//1 released
-    keymap[0x83]=' ';		//2 released
-    keymap[0x84]=' ';		//3 released
-    keymap[0x85]=' ';		//4 released
-    keymap[0x86]=' ';		//5 released
-    keymap[0x87]=' ';		//6 released
-    keymap[0x88]=' ';		//7 released
-    keymap[0x89]=' ';		//8 released
-    keymap[0x8A]=' ';		//9 released
-    keymap[0x8B]=' ';		//0 (zero) released
-    keymap[0x8C]=' ';		//- released
-    keymap[0x8D]=' ';		//= released
-    keymap[0x8E]=' ';		//backspace released
-    keymap[0x8F]=' ';		//tab released
-    keymap[0x90]=' ';		//Q released
-    keymap[0x91]=' ';		//W released
-    keymap[0x92]=' ';		//E released
-    keymap[0x93]=' ';		//R released
-    keymap[0x94]=' ';		//T released
-    keymap[0x95]=' ';		//Y released
-    keymap[0x96]=' ';		//U released
-    keymap[0x97]=' ';		//I released
-    keymap[0x98]=' ';		//O released
-    keymap[0x99]=' ';		//P released
-    keymap[0x9A]=' ';		//[ released
-    keymap[0x9B]=' ';		//] released
-    keymap[0x9C]=' ';		//enter released
-    keymap[0x9D]=' ';		//left control released
-    keymap[0x9E]=' ';		//A released
-    keymap[0x9F]=' ';		//S released
-    keymap[0xA0]=' ';		//D released
-    keymap[0xA1]=' ';		//F released
-    keymap[0xA2]=' ';		//G released
-    keymap[0xA3]=' ';		//H released
-    keymap[0xA4]=' ';		//J released
-    keymap[0xA5]=' ';		//K released
-    keymap[0xA6]=' ';		//L released
-    keymap[0xA7]=' ';		//; released
-    keymap[0xA8]=' ';		//' (single quote) released
-    keymap[0xA9]=' ';		//` (back tick) released
-    keymap[0xAA]=' ';		//left shift released
-    keymap[0xAB]=' ';		//\ released
-    keymap[0xAC]=' ';		//Z released
-    keymap[0xAD]=' ';		//X released
-    keymap[0xAE]=' ';		//C released
-    keymap[0xAF]=' ';		//V released
-    keymap[0xB0]=' ';		//B released
-    keymap[0xB1]=' ';		//N released
-    keymap[0xB2]=' ';		//M released
-    keymap[0xB3]=' ';		//, released
-    keymap[0xB4]=' ';		//. released
-    keymap[0xB5]=' ';		/// released
-    keymap[0xB6]=' ';		//right shift released
-    keymap[0xB7]='*';		//(keypad) * released
-    keymap[0xB8]=' ';		//left alt released
-    keymap[0xB9]=' ';		//space released
-    keymap[0xBA]=' ';		//CapsLock released
-    keymap[0xBB]=' ';		//F1 released
-    keymap[0xBC]=' ';		//F2 released
-    keymap[0xBD]=' ';		//F3 released
-    keymap[0xBE]=' ';		//F4 released
-    keymap[0xBF]=' ';		//F5 released
-    keymap[0xC0]=' ';		//F6 released
-    keymap[0xC1]=' ';		//F7 released
-    keymap[0xC2]=' ';		//F8 released
-    keymap[0xC3]=' ';		//F9 released
-    keymap[0xC4]=' ';		//F10 released
-    keymap[0xC5]=' ';		//NumberLock released
-    keymap[0xC6]=' ';		//ScrollLock released
-    keymap[0xC7]=' ';		//(keypad) 7 released
-    keymap[0xC8]=' ';		//(keypad) 8 released
-    keymap[0xC9]=' ';		//(keypad) 9 released
-    keymap[0xCA]=' ';		//(keypad) - released
-    keymap[0xCB]=' ';		//(keypad) 4 released
-    keymap[0xCC]=' ';		//(keypad) 5 released
-    keymap[0xCD]=' ';		//(keypad) 6 released
-    keymap[0xCE]=' ';		//(keypad) + released
-    keymap[0xCF]=' ';		//(keypad) 1 released
-    keymap[0xD0]=' ';		//(keypad) 2 released
-    keymap[0xD1]=' ';		//(keypad) 3 released
-    keymap[0xD2]=' ';		//(keypad) 0 released
-    keymap[0xD3]=' ';		//(keypad) . released
-    keymap[0xD7]=' ';		//F11 released
-    keymap[0xD8]=' ';		//F12 released
+    keymap[0x01]=' ';        //escape pressed
+    keymap[0x02]='!';        //1 pressed
+    keymap[0x03]='@';        //2 pressed
+    keymap[0x04]='#';        //3 pressed
+    keymap[0x05]='$';        //4 pressed
+    keymap[0x06]='%';        //5 pressed
+    keymap[0x07]='^';        //6 pressed
+    keymap[0x08]='&';        //7 pressed
+    keymap[0x09]='*';        //8 pressed
+    keymap[0x0A]='(';        //9 pressed
+    keymap[0x0B]=')';        //0 (zero) pressed
+    keymap[0x0C]='_';        //- pressed
+    keymap[0x0D]='+';        //= pressed
+    keymap[0x0E]=' ';        //backspace pressed
+    keymap[0x0F]=' ';        //tab pressed
+    keymap[0x10]='Q';        //Q pressed
+    keymap[0x11]='W';        //W pressed
+    keymap[0x12]='E';        //E pressed
+    keymap[0x13]='R';        //R pressed
+    keymap[0x14]='T';        //T pressed
+    keymap[0x15]='Y';        //Y pressed
+    keymap[0x16]='U';        //U pressed
+    keymap[0x17]='I';        //I pressed
+    keymap[0x18]='O';        //O pressed
+    keymap[0x19]='P';        //P pressed
+    keymap[0x1A]='{';        //[ pressed
+    keymap[0x1B]='}';        //] pressed
+    keymap[0x1C]='\n';        //enter pressed
+    keymap[0x1D]=' ';        //left control pressed
+    keymap[0x1E]='A';        //A pressed
+    keymap[0x1F]='S';        //S pressed
+    keymap[0x20]='D';        //D pressed
+    keymap[0x21]='F';        //F pressed
+    keymap[0x22]='G';        //G pressed
+    keymap[0x23]='H';        //H pressed
+    keymap[0x24]='J';        //J pressed
+    keymap[0x25]='K';        //K pressed
+    keymap[0x26]='L';        //L pressed
+    keymap[0x27]=':';        //; pressed
+    keymap[0x28]='\"';        //' (single quote) pressed
+    keymap[0x29]='~';        //` (back tick) pressed
+    keymap[0x2A]=' ';        //left shift pressed
+    keymap[0x2B]='|';        //\ pressed
+    keymap[0x2C]='Z';        //Z pressed
+    keymap[0x2D]='X';        //X pressed
+    keymap[0x2E]='C';        //C pressed
+    keymap[0x2F]='V';        //V pressed
+    keymap[0x30]='B';        //B pressed
+    keymap[0x31]='N';        //N pressed
+    keymap[0x32]='M';        //M pressed
+    keymap[0x33]='<';        //, pressed
+    keymap[0x34]='>';        //. pressed
+    keymap[0x35]='?';        /// pressed
+    keymap[0x36]=' ';        //right shift pressed
+    keymap[0x37]='*';        //(keypad) * pressed
+    keymap[0x38]=' ';        //left alt pressed
+    keymap[0x39]=' ';        //space pressed
+    keymap[0x3A]=' ';        //CapsLock pressed
+    keymap[0x3B]=' ';        //F1 pressed
+    keymap[0x3C]=' ';        //F2 pressed
+    keymap[0x3D]=' ';        //F3 pressed
+    keymap[0x3E]=' ';        //F4 pressed
+    keymap[0x3F]=' ';        //F5 pressed
+    keymap[0x40]=' ';        //F6 pressed
+    keymap[0x41]=' ';        //F7 pressed
+    keymap[0x42]=' ';        //F8 pressed
+    keymap[0x43]=' ';        //F9 pressed
+    keymap[0x44]=' ';        //F10 pressed
+    keymap[0x45]=' ';        //NumberLock pressed
+    keymap[0x46]=' ';        //ScrollLock pressed
+    keymap[0x47]='7';        //(keypad) 7 pressed
+    keymap[0x48]='8';        //(keypad) 8 pressed
+    keymap[0x49]='9';        //(keypad) 9 pressed
+    keymap[0x4A]='-';        //(keypad) - pressed
+    keymap[0x4B]='4';        //(keypad) 4 pressed
+    keymap[0x4C]='5';        //(keypad) 5 pressed
+    keymap[0x4D]='6';        //(keypad) 6 pressed
+    keymap[0x4E]='+';        //(keypad) + pressed
+    keymap[0x4F]='1';        //(keypad) 1 pressed
+    keymap[0x50]='2';        //(keypad) 2 pressed
+    keymap[0x51]='3';        //(keypad) 3 pressed
+    keymap[0x52]='0';        //(keypad) 0 pressed
+    keymap[0x53]='.';        //(keypad) . pressed
+    keymap[0x57]=' ';        //F11 pressed
+    keymap[0x58]=' ';        //F12 pressed
+    keymap[0x81]=' ';        //escape released
+    keymap[0x82]=' ';        //1 released
+    keymap[0x83]=' ';        //2 released
+    keymap[0x84]=' ';        //3 released
+    keymap[0x85]=' ';        //4 released
+    keymap[0x86]=' ';        //5 released
+    keymap[0x87]=' ';        //6 released
+    keymap[0x88]=' ';        //7 released
+    keymap[0x89]=' ';        //8 released
+    keymap[0x8A]=' ';        //9 released
+    keymap[0x8B]=' ';        //0 (zero) released
+    keymap[0x8C]=' ';        //- released
+    keymap[0x8D]=' ';        //= released
+    keymap[0x8E]=' ';        //backspace released
+    keymap[0x8F]=' ';        //tab released
+    keymap[0x90]=' ';        //Q released
+    keymap[0x91]=' ';        //W released
+    keymap[0x92]=' ';        //E released
+    keymap[0x93]=' ';        //R released
+    keymap[0x94]=' ';        //T released
+    keymap[0x95]=' ';        //Y released
+    keymap[0x96]=' ';        //U released
+    keymap[0x97]=' ';        //I released
+    keymap[0x98]=' ';        //O released
+    keymap[0x99]=' ';        //P released
+    keymap[0x9A]=' ';        //[ released
+    keymap[0x9B]=' ';        //] released
+    keymap[0x9C]=' ';        //enter released
+    keymap[0x9D]=' ';        //left control released
+    keymap[0x9E]=' ';        //A released
+    keymap[0x9F]=' ';        //S released
+    keymap[0xA0]=' ';        //D released
+    keymap[0xA1]=' ';        //F released
+    keymap[0xA2]=' ';        //G released
+    keymap[0xA3]=' ';        //H released
+    keymap[0xA4]=' ';        //J released
+    keymap[0xA5]=' ';        //K released
+    keymap[0xA6]=' ';        //L released
+    keymap[0xA7]=' ';        //; released
+    keymap[0xA8]=' ';        //' (single quote) released
+    keymap[0xA9]=' ';        //` (back tick) released
+    keymap[0xAA]=' ';        //left shift released
+    keymap[0xAB]=' ';        //\ released
+    keymap[0xAC]=' ';        //Z released
+    keymap[0xAD]=' ';        //X released
+    keymap[0xAE]=' ';        //C released
+    keymap[0xAF]=' ';        //V released
+    keymap[0xB0]=' ';        //B released
+    keymap[0xB1]=' ';        //N released
+    keymap[0xB2]=' ';        //M released
+    keymap[0xB3]=' ';        //, released
+    keymap[0xB4]=' ';        //. released
+    keymap[0xB5]=' ';        /// released
+    keymap[0xB6]=' ';        //right shift released
+    keymap[0xB7]='*';        //(keypad) * released
+    keymap[0xB8]=' ';        //left alt released
+    keymap[0xB9]=' ';        //space released
+    keymap[0xBA]=' ';        //CapsLock released
+    keymap[0xBB]=' ';        //F1 released
+    keymap[0xBC]=' ';        //F2 released
+    keymap[0xBD]=' ';        //F3 released
+    keymap[0xBE]=' ';        //F4 released
+    keymap[0xBF]=' ';        //F5 released
+    keymap[0xC0]=' ';        //F6 released
+    keymap[0xC1]=' ';        //F7 released
+    keymap[0xC2]=' ';        //F8 released
+    keymap[0xC3]=' ';        //F9 released
+    keymap[0xC4]=' ';        //F10 released
+    keymap[0xC5]=' ';        //NumberLock released
+    keymap[0xC6]=' ';        //ScrollLock released
+    keymap[0xC7]=' ';        //(keypad) 7 released
+    keymap[0xC8]=' ';        //(keypad) 8 released
+    keymap[0xC9]=' ';        //(keypad) 9 released
+    keymap[0xCA]=' ';        //(keypad) - released
+    keymap[0xCB]=' ';        //(keypad) 4 released
+    keymap[0xCC]=' ';        //(keypad) 5 released
+    keymap[0xCD]=' ';        //(keypad) 6 released
+    keymap[0xCE]=' ';        //(keypad) + released
+    keymap[0xCF]=' ';        //(keypad) 1 released
+    keymap[0xD0]=' ';        //(keypad) 2 released
+    keymap[0xD1]=' ';        //(keypad) 3 released
+    keymap[0xD2]=' ';        //(keypad) 0 released
+    keymap[0xD3]=' ';        //(keypad) . released
+    keymap[0xD7]=' ';        //F11 released
+    keymap[0xD8]=' ';        //F12 released
 }
diff --git a/src/c/paging.c b/src/c/paging.c
index 660ee8c..f08530d 100644
--- a/src/c/paging.c
+++ b/src/c/paging.c
@@ -10,11 +10,11 @@ void set_pd()
     //set each entry to not present
     for(size_t i=0;i<1024;i++)
     {
-	// This sets the following flags to the pages:
-	//   Supervisor: Only kernel-mode can access them
-	//   Write Enabled: It can be both read from and written to
-	//   Not Present: The page table is not present
-	page_directory[i] = 0x00000002;
+        // This sets the following flags to the pages:
+        //   Supervisor: Only kernel-mode can access them
+        //   Write Enabled: It can be both read from and written to
+        //   Not Present: The page table is not present
+        page_directory[i] = 0x00000002;
     }
 }
 
@@ -24,13 +24,13 @@ void set_pt(size_t num,uint32_t address)
 {
     // holds the physical address where we want to start mapping these pages to.
     // in this case, we want to map these pages to the very beginning of memory.
-     
+
     //we will fill all 1024 entries in the table, mapping 4 megabytes
     for(size_t i=0;i<1024;i++)
     {
-	// As the address is page aligned, it will always leave 12 bits zeroed.
-	// Those bits are used by the attributes ;)
-	page_table[num][i] = (address + i * 0x1000) | 3; // attributes: supervisor level, read/write, present.
+        // As the address is page aligned, it will always leave 12 bits zeroed.
+        // Those bits are used by the attributes ;)
+        page_table[num][i] = (address + i * 0x1000) | 3; // attributes: supervisor level, read/write, present.
     }
 
     page_directory[num] = ((uint32_t)page_table[num]) | 3;
diff --git a/src/c/stack_protector.c b/src/c/stack_protector.c
index 9ce3cba..37f7cda 100644
--- a/src/c/stack_protector.c
+++ b/src/c/stack_protector.c
@@ -1,22 +1,14 @@
 #include<stdint.h>
 #include<stdio.h>
- 
+
 #if UINT32_MAX == UINTPTR_MAX
 #define STACK_CHK_GUARD 0xe2dee396
 #else
 #define STACK_CHK_GUARD 0x595e9fbd94fda766
 #endif
- 
+
 uintptr_t __stack_chk_guard = STACK_CHK_GUARD;
- 
-//__attribute__((noreturn))
 void __stack_chk_fail(void)
 {
-#if __STDC_HOSTED__
-	printf("Stack smashing detected\n");
-	abort();
-#elif __is_myos_kernel
-	printf("Stack smashing detected\n");
-	panic("Stack smashing detected");
-#endif
+    printf("Stack smashing detected\n");
 }
diff --git a/src/c/stdio.c b/src/c/stdio.c
index 36fd140..3a51e9a 100644
--- a/src/c/stdio.c
+++ b/src/c/stdio.c
@@ -17,20 +17,20 @@ void printf(char *str, ...)
 
     for(size_t i=0;str[i]!='\0';i++)
     {
-	if(str[i]=='%')
-	{
-	    i++;
-	    if(str[i]=='c') terminal_putchar((char)va_arg(list,int));
-	    else if(str[i]=='s') terminal_writestring(va_arg(list,char*));
-	    else if(str[i]=='d') terminal_writeint(va_arg(list,int));
-	    else if(str[i]=='f') terminal_writefloat(va_arg(list,double));
-	    else
-	    {
-		terminal_writestring("wrong format using print function\n");
-		return;
-	    }
-	}
-	else terminal_putchar(str[i]);
+        if(str[i]=='%')
+        {
+            i++;
+            if(str[i]=='c') terminal_putchar((char)va_arg(list,int));
+            else if(str[i]=='s') terminal_writestring(va_arg(list,char*));
+            else if(str[i]=='d') terminal_writeint(va_arg(list,int));
+            else if(str[i]=='f') terminal_writefloat(va_arg(list,double));
+            else
+            {
+                terminal_writestring("wrong format using print function\n");
+                return;
+            }
+        }
+        else terminal_putchar(str[i]);
     }
 
     va_end(list);
diff --git a/src/c/string.c b/src/c/string.c
index 6a3a96b..ce33528 100644
--- a/src/c/string.c
+++ b/src/c/string.c
@@ -36,9 +36,9 @@ void stringrev(char *str)
 
     for(size_t j=0;j<i-j;j++)
     {
-	char tmp=str[i-j];
-	str[i-j]=str[j];
-	str[j]=tmp;
+        char tmp=str[i-j];
+        str[i-j]=str[j];
+        str[j]=tmp;
     }
 }
 
@@ -48,9 +48,9 @@ uint32_t stoi(const char *str)
 
     for(size_t i=0;str[i]!='\0';i++)
     {
-	if(str[i]<'0'||str[i]>'9') return num;
-	num*=10;
-	num+=str[i]-'0';
+        if(str[i]<'0'||str[i]>'9') return num;
+        num*=10;
+        num+=str[i]-'0';
     }
 
     return num;
@@ -61,11 +61,11 @@ void itos(uint32_t num,char *str)
     if(num==0) stringcpy(str,"0");
     else
     {
-	size_t i=0;
-	for(;num>0;num/=10,i++) str[i]='0'+num%10;
-	str[i]='\0';
+        size_t i=0;
+        for(;num>0;num/=10,i++) str[i]='0'+num%10;
+        str[i]='\0';
 
-	stringrev(str);
+        stringrev(str);
     }
 }
 
@@ -79,16 +79,16 @@ double stof(const char *str)
 
     for(;str[i]!='\0';i++)
     {
-	if(str[i]=='.')
-	{
-	    if(point) return num/pow;
-	    point=1;
-	    continue;
-	}
-	if(str[i]<'0'||str[i]>'9') return num/pow;
-	num*=10;
-	num+=str[i]-'0';
-	if(point) pow*=10;
+        if(str[i]=='.')
+        {
+            if(point) return num/pow;
+            point=1;
+            continue;
+        }
+        if(str[i]<'0'||str[i]>'9') return num/pow;
+        num*=10;
+        num+=str[i]-'0';
+        if(point) pow*=10;
     }
 
     return num/pow;
@@ -105,9 +105,9 @@ void ftos(double num, char *str)
 
     for(size_t i=0;i<decimals;i++)
     {
-	num-=(uint32_t)num;
-	num*=10;
-	c[0]=(uint32_t)num+'0';
-	stringcat(str,c);
+        num-=(uint32_t)num;
+        num*=10;
+        c[0]=(uint32_t)num+'0';
+        stringcat(str,c);
     }
 }
diff --git a/src/c/timer.c b/src/c/timer.c
index 0b4ddaa..390e512 100644
--- a/src/c/timer.c
+++ b/src/c/timer.c
@@ -14,9 +14,9 @@ void timer_handler()
     tick++;
     if(tick==TICKS_PER_SECOND)
     {
-	//printf("%d seconds passed\n",time);
-	tick=0;
-	time++;
+        //printf("%d seconds passed\n",time);
+        tick=0;
+        time++;
     }
 
     ioport_out(0x20, 0x20);
diff --git a/src/c/tty.c b/src/c/tty.c
index c7e5f44..62ccd02 100644
--- a/src/c/tty.c
+++ b/src/c/tty.c
@@ -16,17 +16,17 @@ size_t pieces(char pieces[][CMD_LENGTH],char *buffer)
     while(buffer[i]==' '&&buffer[i]!='\0') i++;
     for(;buffer[i]!='\0';i++)
     {
-	if(buffer[i]==' ')
-	{
-	    while(buffer[i]==' '&&buffer[i]!='\0') i++;
-	    j=0;
-	    r++;
-	    i--;
-	}
-	else
-	{
-	    pieces[r][j++]=buffer[i];
-	}
+        if(buffer[i]==' ')
+        {
+            while(buffer[i]==' '&&buffer[i]!='\0') i++;
+            j=0;
+            r++;
+            i--;
+        }
+        else
+        {
+            pieces[r][j++]=buffer[i];
+        }
     }
     return r+1;
 }
@@ -35,7 +35,7 @@ void echo(size_t numberof,char parts[][CMD_LENGTH])
 {
     for(size_t i=1;i<numberof;i++)
     {
-	printf("%s ",parts[i]);
+        printf("%s ",parts[i]);
     }
     printf("\n");
 }
@@ -58,8 +58,8 @@ void number(size_t numberof,char parts[][CMD_LENGTH])
     if(numberof==1) printf("Please enter a number\n");
     else
     {
-	printf("Entered integer number is %d\n",stoi(parts[1]));
-	printf("Entered float number is: %f\n",stof(parts[1]));
+        printf("Entered integer number is %d\n",stoi(parts[1]));
+        printf("Entered float number is: %f\n",stof(parts[1]));
     }
 }
 
@@ -88,30 +88,30 @@ void prompt()
 void neofetch()
 {
     set_color(VGA_COLOR_WHITE,VGA_COLOR_BLACK);
-    printf("      .                ");			printf("Dobrodosli u moj     \n");
-    printf("     J:L    (\"\"\")      ");		printf("operativni sistem :) \n");
-    printf("     |:|     III       ");			printf("Uzivajte!            \n");
-    printf("     |:|     III       ");			printf("                     \n");
-    printf("     |:|     III       ");			printf("Welcome to my        \n");
-    printf("     |:|   __III__     ");			printf("operating system :)  \n");
-    printf("     |:| /:-.___,-:\\   ");			printf("Enjoy your stay!     \n");
-    printf("     |:| \\]  |:|  [/   ");			printf("                     \n");
-    printf("     |:|     |:|       ");			printf("                     \n");
-    printf("     |:|     |:|       ");			printf("                     \n");
-    printf("     |:|     |:|       ");			printf("                     \n");
-    printf(" /]  |:|  [\\ |:|       ");			printf("                     \n");
-    printf(" \\:-'\"\"\"`-:/ |:|       ");		printf("                     \n");
-    printf("   \"\"III\"\"   |:|       ");		printf("                     \n");
-    printf("     III     |:|       ");			printf("                     \n");
-    printf("     III     |:|       ");			printf("                     \n");
-    printf("     III     |:|       ");			printf("napravio/made by:    \n");
-    printf("    (___)    J:F       ");			printf("Aleksa Vuckovic      \n");
-    printf("              \"        ");			printf("                     \n");
+    printf("      .                ");         printf("Dobrodosli u moj     \n");
+    printf("     J:L    (\"\"\")      ");      printf("operativni sistem :) \n");
+    printf("     |:|     III       ");         printf("Uzivajte!            \n");
+    printf("     |:|     III       ");         printf("                     \n");
+    printf("     |:|     III       ");         printf("Welcome to my        \n");
+    printf("     |:|   __III__     ");         printf("operating system :)  \n");
+    printf("     |:| /:-.___,-:\\   ");        printf("Enjoy your stay!     \n");
+    printf("     |:| \\]  |:|  [/   ");        printf("                     \n");
+    printf("     |:|     |:|       ");         printf("                     \n");
+    printf("     |:|     |:|       ");         printf("                     \n");
+    printf("     |:|     |:|       ");         printf("                     \n");
+    printf(" /]  |:|  [\\ |:|       ");        printf("                     \n");
+    printf(" \\:-'\"\"\"`-:/ |:|       ");     printf("                     \n");
+    printf("   \"\"III\"\"   |:|       ");     printf("                     \n");
+    printf("     III     |:|       ");         printf("                     \n");
+    printf("     III     |:|       ");         printf("                     \n");
+    printf("     III     |:|       ");         printf("napravio/made by:    \n");
+    printf("    (___)    J:F       ");         printf("Aleksa Vuckovic      \n");
+    printf("              \"        ");        printf("                     \n");
 
     for(size_t i=0;i<16;i++)
     {
-	set_color(0,i);
-	printf("  ",i);
+        set_color(0,i);
+        printf("  ",i);
     }
     printf("\n");
 
diff --git a/src/c/vga.c b/src/c/vga.c
index e61cd7f..67c8b02 100644
--- a/src/c/vga.c
+++ b/src/c/vga.c
@@ -12,12 +12,12 @@ void set_color(enum vga_color fg, enum vga_color bg)
 {
     terminal_color = fg | bg << 4;
 }
- 
+
 static inline uint16_t vga_entry(unsigned char uc, uint8_t color)
 {
     return (uint16_t) uc | (uint16_t) color << 8;
 }
- 
+
 void terminal_initialize()
 {
     terminal_row=0;
@@ -26,11 +26,11 @@ void terminal_initialize()
     terminal_buffer=(uint16_t*) 0xB8000;
     for(size_t y=0;y<VGA_HEIGHT;y++)
     {
-	for(size_t x=0;x<VGA_WIDTH;x++)
-	{
-	    const size_t index=y*VGA_WIDTH+x;
-	    terminal_buffer[index]=vga_entry(' ', terminal_color);
-	}
+        for(size_t x=0;x<VGA_WIDTH;x++)
+        {
+            const size_t index=y*VGA_WIDTH+x;
+            terminal_buffer[index]=vga_entry(' ', terminal_color);
+        }
     }
 }
 
@@ -43,7 +43,8 @@ void terminal_putentryat(char c, uint8_t color, size_t x, size_t y)
 void movescreen()
 {
     terminal_row--;
-    for(size_t i=0;i<VGA_HEIGHT;i++) for(size_t j=0;j<VGA_WIDTH;j++) terminal_buffer[i*VGA_WIDTH+j]=terminal_buffer[(i+1)*VGA_WIDTH+j];
+    for(size_t i=0;i<VGA_HEIGHT;i++) for(size_t j=0;j<VGA_WIDTH;j++)
+        terminal_buffer[i*VGA_WIDTH+j]=terminal_buffer[(i+1)*VGA_WIDTH+j];
 }
 
 void next_field()
@@ -56,18 +57,18 @@ void previous_field()
     if(terminal_column) terminal_column--;
     else terminal_row--,terminal_column=VGA_WIDTH-1;
 }
- 
+
 void terminal_putchar(char c)
 {
     if(c=='\n') terminal_column=0,terminal_row++;
     else
     {
-	terminal_putentryat(c, terminal_color, terminal_column, terminal_row);
-	next_field();
+        terminal_putentryat(c, terminal_color, terminal_column, terminal_row);
+        next_field();
     }
     if (terminal_row==VGA_HEIGHT) movescreen();
 }
- 
+
 void terminal_writestring(char* data)
 {
     for(int i=0;data[i]!='\0';i++) terminal_putchar(data[i]);
-- 
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