Import backup from 2003-10-06

Functions.c

@@ -37,21 +37,31 @@ void remap_pics(int pic1, int pic2)
 {
 	byte	a1, a2;
 
-	a1 = inportb(PIC1_DATA);
-	a2 = inportb(PIC2_DATA);
+	a1 = inportb(PIC1_DATA);      //0x21
+	a2 = inportb(PIC2_DATA);      //0xA1
 
-	outportb(PIC1_COMMAND, ICW1_INIT+ICW1_ICW4);
-	outportb(PIC2_COMMAND, ICW1_INIT+ICW1_ICW4);
-	outportb(PIC1_DATA, pic1);
-	outportb(PIC2_DATA, pic2);
-	outportb(PIC1_DATA, 4);
-	outportb(PIC2_DATA, 2);
-	outportb(PIC1_DATA, ICW4_8086);
-	outportb(PIC2_DATA, ICW4_8086);
+	outportb(PIC1_COMMAND, ICW1_INIT+ICW1_ICW4);	//0x20, 0x10+0x01 00010001b
+	outportb(PIC2_COMMAND, ICW1_INIT+ICW1_ICW4);	//0xA0, 0x10+0x01 00010001b
+	outportb(PIC1_DATA, pic1);			//0x21, pic1
+	outportb(PIC2_DATA, pic2);			//0xA1, pic2
+	outportb(PIC1_DATA, 4);				//0x21, 0x04      00000100b
+	outportb(PIC2_DATA, 2);				//0xA1, 0x02      00000010b
+	outportb(PIC1_DATA, ICW4_8086);			//0x21, 0x01      00000001b
+	outportb(PIC2_DATA, ICW4_8086);			//0xA1, 0x01      00000001b
 
-	outportb(PIC1_DATA, a1);
-	outportb(PIC2_DATA, a2);
-};
+	outportb(PIC1_DATA, a1);			//0x21
+	outportb(PIC2_DATA, a2);			//0xA1
+}
+
+inline void pic1_mask(byte mask)
+{
+	outportb(PIC1_DATA, mask);			//0x21, maskfield *OCW1*
+}
+
+inline void pic2_mask(byte mask)
+{
+ 	outportb(PIC2_DATA, mask);			//0xA1, maskfield *OCW1*
+}
 
 inline void restart()
 {
@@ -66,6 +76,16 @@ inline void eoi()
 	outportb(0x20, 0x20);							//EOI
 }
 
+inline void eoi2()
+{
+ 	outportb(0xA0, 0x20);
+ 	outportb(0x20, 0x20);
+}
+
+
+
+
+
 
 
 

functions.h

@@ -11,7 +11,10 @@ void enable_ints();
 void disable_ints();
 inline void restart();
 void remap_pics(int pic1, int pic2);
+inline void pic1_mask(byte mask);
+inline void pic2_mask(byte mask);
 inline void eoi();
+inline void eoi2();
 
 
 

k_defines.h

@@ -30,6 +30,8 @@
 
 #define FREERAM_START	0x268000
 
+#define KERNEL_PID	0x02
+
 typedef	unsigned char	byte;
 typedef	unsigned short	word;
 typedef	unsigned int	dword;

kernel.c

@@ -14,10 +14,12 @@
 #include "video.h"
 #include "mm.h"
 #include "keyboard.h"
+#include "mouse.h"
 
 void isr(dword num);
 void k_init();
 
+#include "mouse.c"
 #include "keyboard.c"
 #include "mm.c"
 #include "functions.c"
@@ -27,65 +29,76 @@ dword timer = 0;
 
 void k_init()
 {
+	console_cls();
 	remap_pics(0x20, 0x28);
 	//set timer : 2e9c = 100hz
 	outportb(0x43, 0x34);
 	outportb(0x40, 0x9c); //lsb
 	outportb(0x40, 0x2e); //msb
 	video_init((ModeInfoBlock *) 0x90306);
-	mm_init();
-	enable_ints();
-	console_cls();
-	printf("Memory available to OS: %d MB\n (Bytes: %d)", mm_totalmem/0x100000, mm_totalmem);
+	video_rectf(VXR*3/11, 0, VXR*4/11, VYR-1, 0x00000088);      		//test rectangles, draws "HOS"
+	video_rectf(VXR*7/11, 0, VXR*8/11, VYR-1, 0x00000088);
+	video_rectf(VXR/11, 0, VXR*2/11, VYR*2/5, 0x00000088);
+	video_rectf(VXR/11, VYR*3/5, VXR*2/11, VYR-1, 0x00000088);
+	video_rectf(VXR*5/11, VYR/5, VXR*6/11, VYR*4/5, 0x00000088);
+	video_rectf(VXR*9/11, VYR/5, VXR-1, VYR*2/5, 0x00000088);
+	video_rectf(VXR*8/11, VYR*3/5, VXR*10/11, VYR*4/5, 0x00000088);
 
-	for (;;)
-		printf("%c ", kbdWaitKey());
-/*	pageblock *pb = first_pageblock;
+	video_vert(10, 10, 16, 0x00ffff00);		//should be yellow 'H'
+	video_horiz(13, 10, 14, 0x00ffff00);
+	video_vert(14, 10, 16, 0x00ffff00);
+	
+	video_horiz(10, 17, 21, 0x00ffff00);
+	video_vert(19, 10, 16, 0x00ffff00);
+	video_horiz(16, 17, 21, 0x00ffff00);
+	
+	int a, b;
+	for (a = 0; a < 256; a++)
+	{
+		for (b = 0; b < 256; b++)
+		{
+			video_pset(a+5, b+30, (a<<16)|(b<<8));
+			video_pset(a+270, b+30, (a<<8)|(b));
+			video_pset(a+535, b+30, (a<<16)|(b));
+
+			video_pset(a+5, b+290, (a<<16)|(b<<8)|0x000000ff);
+			video_pset(a+270, b+290, (a<<8)|(b)|0x00ff0000);
+			video_pset(a+535, b+290, (a<<16)|(b)|0x0000ff00);
+		}
+	}
+
+	mm_init();
+	mouse_init();
+	enable_ints();
+	printf("Memory available to OS: %d MB (Bytes: %d)\n", mm_totalmem/0x100000, mm_totalmem);
+	pic1_mask(0);			//unmask IRQ's 0-7
+	pic2_mask(0);			//unmask IRQ's 8-15
+	dword key = 0;
 	for (;;)
 	{
-		if (pb->flags == MM_PB_NP)
-			break;
-		printf("\nBase: 0x%x; Limit: 0x%x; Flags: 0x%x, Link: 0x%x", pb->base, pb->length, pb->flags, pb->link);
-		pb = (pageblock *) pb->link;
-	}	*/
+		key = kbdWaitKey();
+		putc(key);
+	}
 }
 
 void isr(dword num)
 {
 	switch(num)
 	{
-	case 0x20:
+	case 0x20:         		// IRQ0 - timer interrupt
 		timer++;
 		(*(byte *)0xb8000)++;
-		switch(timer)
-		{
-		case 150:
-			video_rectf(VXR*3/11, 0, VXR*4/11, VYR-1, 0x00000088);
-			break;
-		case 200:
-			video_rectf(VXR*7/11, 0, VXR*8/11, VYR-1, 0x00000088);
-			break;
-		case 250:
-			video_rectf(VXR/11, 0, VXR*2/11, VYR*2/5, 0x00000088);
-			break;
-		case 300:
-			video_rectf(VXR/11, VYR*3/5, VXR*2/11, VYR-1, 0x00000088);
-			break;
-		case 350:
-			video_rectf(VXR*5/11, VYR/5, VXR*6/11, VYR*4/5, 0x00000088);
-			break;
-		case 400:
-			video_rectf(VXR*9/11, VYR/5, VXR-1, VYR*2/5, 0x00000088);
-			break;
-		case 450:
-			video_rectf(VXR*8/11, VYR*3/5, VXR*10/11, VYR*4/5, 0x00000088);
-			break;
-		}
 		eoi();
 		break;
-	case 0x21:
-		printf("------------------KEYBOARD ISR--------------------------\n");
-		isr_keyboard();
+	case 0x21:  			// IRQ1 - keyboard interrupt
+		isr_keyboard();    	//isr_keybard() takes care of calling eoi()
+		break;
+	case 0x2C:			// IRQ12 - PS/2 mouse
+		isr_mouse();
+		eoi2();
+		break;
+	default:
+		printf("Interrupt %d (0x%x) Unhandled!!\n", num, num);
 		break;
 	}
 }

keyboard.c

@@ -10,8 +10,8 @@ byte kbdAscii = 0;
 byte kbdScan = 0;
 
 dword kbdBuffer[KBD_BUFFER_LENGTH];
-byte kbdBufferStart = 0;
-byte kbdBufferLen = 0;
+int kbdBufferStart = 0;
+int kbdBufferLen = 0;
 byte kbdExt = 0;
 byte kbdExt2 = 0;
 byte ackReason = 0;		//used to record the reason why we would get an acknowledge byte (0xFA)
@@ -26,11 +26,12 @@ const byte SCAN2ASCIISHIFT[128] = "\000\033!@#$%^&*()_+\010\011QWERTYUIOP{}\n\00
 void isr_keyboard()
 {
 	kbdScan = inportb(0x60);
+	//printf("\nKEYBOARD INTERRUPT: 0x%x", kbdScan);
 	byte inState = inportb(0x61);
 	outportb(0x61, inState|0x80);
 	outportb(0x61, inState);
 	
-	printf("IRQ 1: %x\n", kbdScan);
+	//printf("IRQ 1: %x\n", kbdScan);
 
 	if (kbdScan == 0xFA)	//250					//ACKnowledge
 	{
@@ -188,8 +189,8 @@ void isr_keyboard()
 		}
 		else
 		{
-			kbdBuffer[(kbdBufferStart+kbdBufferLen)%KBD_BUFFER_LENGTH] = (dword) ((kbdFlags << 16) | (kbdScan << 8) | kbdAscii);
-			kbdBufferLen++;
+			kbdBuffer[(kbdBufferStart+kbdBufferLen++)%KBD_BUFFER_LENGTH] = (dword) ((kbdFlags << 16) | (kbdScan << 8) | kbdAscii);
+//			printf("S:%d\tL:%d\tR:%x\n", kbdBufferStart, kbdBufferLen, kbdBuffer[kbdBufferStart]);
 		}
 	}
 
@@ -197,7 +198,7 @@ void isr_keyboard()
 
 //	if (key == 0xFA)							//ACKnowledge
 //		outportb(0x60, 0x3);
-};
+}
 
 inline byte switchCase(byte asciiCode)
 {
@@ -213,27 +214,27 @@ dword kbdGetKey()
 	if (kbdBufferLen == 0)					//buffer empty
 		return 0;
 	dword retVal = kbdBuffer[kbdBufferStart];
-	printf("S:%d\tE:%d\tR:%x\n", kbdBufferStart, kbdBufferLen, retVal);
 	kbdBufferStart++;
 	kbdBufferLen--;
-	if (kbdBufferStart == KBD_BUFFER_LENGTH)
+	if (kbdBufferStart >= KBD_BUFFER_LENGTH)
 		kbdBufferStart = 0;
 	return retVal;
 }
 
 dword kbdWaitKey()
 {
-	dword retVal = 0;
 	for (;;)
 	{
-		retVal = kbdGetKey();
-		if (retVal != 0)
-		{
-			printf("S:%d\tE:%d\tR:%x\n", kbdBufferStart, kbdBufferLen, retVal);
+		if (kbdBufferLen != 0)					//buffer empty
+			break;
+	}		
+	dword retVal = kbdBuffer[kbdBufferStart];
+	kbdBufferStart++;
+	kbdBufferLen--;
+	if (kbdBufferStart >= KBD_BUFFER_LENGTH)
+		kbdBufferStart = 0;
 	return retVal;
 }
-	}
-}
 
 inline void kbd_resetLEDs()
 {

lib/io.asm

@@ -25,6 +25,7 @@ _writeCursorPosition:
 	push	ebp
 	mov	ebp, esp
 
+	push	eax
 	push	ebx
 	push	edx
 
@@ -49,6 +50,7 @@ _writeCursorPosition:
 
 	pop	edx
 	pop	ebx
+	pop	eax
 	pop	ebp
 
 	ret
@@ -175,7 +177,7 @@ _printf:
 	push	ebp
 	mov	ebp, esp
 	pusha
-	mov	ebx, [ebp+8]			;ebx = in format string
+	mov	ebx, [ebp+8]			;ebx = position in format string
 	mov	esi, ebp
 	add	esi, 12				;esi = to next variable arg
 	xor	ecx, ecx			;ecx used if we encounter a '%'
@@ -184,10 +186,10 @@ printf_loop:
 	inc	ebx
 	cmp	al, 0
 	jzfar	printf_done
-	cmp	al, '%'
-	jzfar	printf_percent
 	cmp	ecx, 1
 	jz	printf_special
+	cmp	al, '%'
+	jzfar	printf_percent
 
 	push	eax
 	call	_putc

lib/io.h

@@ -3,9 +3,9 @@
 #ifndef __HIO_H__
 #define __HIO_H__ __HIO_H__
 
-void writeCursorPosition(word pos);
-word getCursorPosition();
-int putc(byte chr);
+void writeCursorPosition(dword pos);
+dword getCursorPosition();
+int putc(dword chr);
 int printf(char *fmt, ...);
 int puts(char *str);
 int putDec(int number);

mm.c

@@ -5,7 +5,7 @@
 
 
 pageblock *first_pageblock = (pageblock *) 0;
-dword	mm_totalmem = 0x100000;				//assume 1mb
+dword	mm_totalmem = 0x100000;				//start counting from 1mb
 
 void	mm_init()
 {
@@ -32,30 +32,32 @@ void	mm_init()
 					mm_init_pageblockpage(first_pageblock);
 					first_pageblock->base = maps[a].base.lowdword;
 					first_pageblock->length = maps[a].limit.lowdword / 4096;
-					first_pageblock->flags = MM_PB_AVAIL;
+					first_pageblock->pid = MM_PB_AVAIL;
 				}
 				else				//first_pageblock already set up, add on segment
 				{
 					pageblock *pb = first_pageblock;
 					for (;;)
 					{
-						if (pb->flags == MM_PB_NP)
+						if (pb->pid == MM_PB_NP)
 							break;
 						else
 							pb++;
 					}
 					pb->base = maps[a].base.lowdword;
 					pb->length = maps[a].limit.lowdword / 4096;
-					pb->flags = MM_PB_AVAIL;
+					pb->pid = MM_PB_AVAIL;
 				}
 			}
 		}
 	}
 	if (first_pageblock == 0)
 	{
-		printf("ERROR! NO INITIAL PAGE BLOCK COULD BE CREATED.");
+		printf("ERROR! NO INITIAL PAGE BLOCK CREATED.");
 		asm("cli");
 		asm("hlt");
+		for (;;)
+		;
 	}
 }
 
@@ -64,27 +66,26 @@ void	mm_init()
 
 void	mm_init_pageblockpage(pageblock *pbp)
 {
-	pageblock *pb = pbp;
 	int a;
-	for (a=0; a<512; a++)
+	for (a=0; a<256; a++)       				// 256 pageblock entries * 16 bytes per page block entry = 4096 bytes (1 page of pageblock entries)
 	{
-		pb->base = 0;
-		pb->length = 0;
-		pb->flags = MM_PB_NP;
-		if (a<511)
-			pb->link = (dword)pb + sizeof(pageblock);
+		pbp[a].base = 0;
+		pbp[a].length = 0;
+		pbp[a].pid = MM_PB_NP;
+		if (a<255)
+			pbp[a].link = (dword)(&pbp[a+1]);
 		else
-			pb->link = 0;
-		pb++;
+			pbp[a].link = 0;
 	}
 }
 
 
-void   *mm_palloc(dword numpages)
+void   *mm_palloc(dword numpages, dword proc_pid)
 {
+ 	if (proc_pid < KERNEL_PID)
+ 		return 0;
 	pageblock *pb = first_pageblock;
-	dword freeentries = mm_freeentries();
-	if (freeentries < 2)
+	if (mm_freeentries() < 2)
 	{
 		if(mm_new_pageblock_page() == 0)
 			return 0;
@@ -92,7 +93,7 @@ void   *mm_palloc(dword numpages)
 	pageblock *newentry = mm_nextpageblockentry();
 	for (;;)
 	{
-		if ((pb->flags == MM_PB_AVAIL) && (pb->length >= numpages))
+		if ((pb->pid == MM_PB_AVAIL) && (pb->length >= numpages))
 			break;
 		if (pb->link == 0)
 			return 0;
@@ -100,14 +101,14 @@ void   *mm_palloc(dword numpages)
 	}
 	if (pb->length == numpages)		//dont need a new entry, just mark this one as used :)
 	{
-		pb->flags = MM_PB_USED;
-		return pb;
+		pb->pid = proc_pid;
+		return (void *)pb->base;
 	}
 	else					//subtract out allocated number of pages from length
 	{
 		newentry->base = pb->base;
 		newentry->length = numpages;
-		newentry->flags = MM_PB_USED;
+		newentry->pid = proc_pid;
 		pb->base += (numpages * 4096);
 		pb->length -= numpages;
 		return (void *)newentry->base;
@@ -121,7 +122,7 @@ dword	mm_freeentries()
 	dword counter = 0;
 	for (;;)
 	{
-		if (pb->flags == MM_PB_NP)
+		if (pb->pid == MM_PB_NP)
 			counter++;
 		if (pb->link == 0)
 			return counter;
@@ -130,12 +131,12 @@ dword	mm_freeentries()
 }
 
 
-pageblock *mm_new_pageblock_page()
+pageblock *mm_new_pageblock_page()  	//as of 09/26/03 this method leaks 4kb main memory per call, unrecoverable
 {
 	pageblock *pb = first_pageblock;
 	for (;;)
 	{
-		if ((pb->flags == MM_PB_AVAIL) && (pb->length > 1))
+		if ((pb->pid == MM_PB_AVAIL) && (pb->length > 1))
 		{
 			pageblock *retval = (pageblock *)pb->base;
 			pb->base += 4096;
@@ -153,36 +154,18 @@ pageblock *mm_new_pageblock_page()
 
 int	mm_pfree(void *ptr)
 {
+ 	if (ptr == 0)
+ 		return 2;
 	pageblock *pb = first_pageblock;
 	dword tofree = (dword) ptr;
 	for (;;)
 	{
-		if ((pb->base == tofree) && (pb->flags == MM_PB_USED))
+		if (pb->base == tofree)		// && (pb->pid == MM_PB_USED))
 		{
-			pb->flags = MM_PB_AVAIL;		//found block, mark available / coalesce it
-			pageblock *pbc = first_pageblock;
-			for (;;)
-			{
-			    	if (pbc->flags == MM_PB_AVAIL)
-			    	{
-			    		if ((pbc->base + (pbc->length * 4096)) == pb->base)	//pbc ends where pb starts
-					{
-						pbc->length += pb->length;	//extend pbc's length by pb's length
-						pb->flags = MM_PB_NP;		//mark pb as an unused entry
+			pb->pid = MM_PB_AVAIL;		//found block, mark available / coalesce it
+			mm_coalesce(pb);
 			return 0;
 		}
-					if ((pb->base + (pb->length * 4096)) == pbc->base)	//pb ends where pb starts
-					{
-						pb->length += pbc->length;
-						pbc->flags = MM_PB_NP;
-						return 0;
-					}
-				 }
-				if (pbc->link == 0)			//no entry found to consolidate...
-					return 0;
-				pbc = (pageblock *) pbc->link;		//next entry to test
-			}
-		}
 		if (pb->link == 0)
 			return 1;
 		pb = (pageblock *) pb->link;
@@ -207,7 +190,7 @@ pageblock *mm_nextpageblockentry()
 	pageblock *pb = first_pageblock;
 	for (;;)
 	{
-		if (pb->flags == MM_PB_NP)
+		if (pb->pid == MM_PB_NP)
 			return pb;
 		if (pb->link == 0)
 			return 0;
@@ -222,7 +205,7 @@ dword mm_freemem()
 	pageblock *pb = first_pageblock;
 	for (;;)
 	{
-		if (pb->flags == MM_PB_AVAIL)
+		if (pb->pid == MM_PB_AVAIL)
 			amount += (pb->length)*4096;
 		if (pb->link == 0)
 			return amount;
@@ -231,6 +214,35 @@ dword mm_freemem()
 }
 
 
+void	mm_coalesce(pageblock *pb)
+{
+	pageblock *pbc = first_pageblock;
+	for (;;)
+	{
+		if (pbc->pid == pb->pid)	//pid fields must match, both same process, both avail, or both not present
+		{
+			if ((pbc->base + (pbc->length * 4096)) == pb->base)	//pbc ends where pb starts
+			{
+				pbc->length += pb->length;
+				pb->pid = MM_PB_NP;
+				mm_coalesce(pbc);			//recursion: checks for any more page blocks to coalesce if one found
+				return;					//exit this recursion...
+			}
+			if ((pb->base + (pb->length * 4096)) == pbc->base)	//pb ends where pbc starts
+			{
+				pb->length += pbc->length;
+				pbc->pid = MM_PB_NP;
+				mm_coalesce(pb);
+				return;
+			}
+		}
+		if (pbc->link == 0)
+			return;
+		pbc = (pageblock *)pbc->link;
+	}
+}
+
+
 
 
 

mm.h

@@ -10,26 +10,25 @@ typedef struct {
 typedef struct {
 	dword	base;
 	dword	length;				//in pages
-	dword	flags;
-	dword	link;
-} __attribute__ ((packed)) pageblock;		//16 byte pageblock entry - 512 entries = 1 page
+	dword	pid;                            //normally PID of process, use NP, AVAIL for special flags
+	dword	link;				//leave dword instead of pointer so i dont have to worry about pointer arithmetic
+} __attribute__ ((packed)) pageblock;		//16 byte pageblock entry - 256 entries = 1 page
 
 
 void	mm_init();
 void	mm_init_pageblockpage(pageblock *pbp);
-void   *mm_palloc(dword numpages);
+void   *mm_palloc(dword numpages, dword proc_pid);
+void	mm_coalesce(pageblock *pb);
 int	mm_pfree(void *ptr);
 dword	mm_freeentries();
+dword	mm_freemem();
 pageblock *mm_new_pageblock_page();
 pageblock *mm_lastpageblockentry();
 pageblock *mm_nextpageblockentry();
-dword mm_freemem();
 
 
-#define MM_PB_FLAGMASK 0x03	//00000011
 #define MM_PB_NP 0x00		//00000000
 #define MM_PB_AVAIL 0x01	//00000001
-#define MM_PB_USED 0x02		//00000010
 
 
 

mouse.c

@@ -0,0 +1,56 @@
+// mouse.c
+// 10/03/03
+// Author: Josh Holtrop
+
+
+void mouse_init()
+{
+	outportb(0x64, 0x20);		//tell keyboard controller we are going to read keyboard controller command byte
+	byte temp = inportb(0x60);	//read keyboard controller command byte
+	outportb(0x64, 0x60);		//tell keyboard controller we are going to write keyboard controller command byte
+	outportb(0x60, 0x03 | (temp&0x40));	//write keyboard controller command byte: enable mouse/keyboard ints, include original XLATE bit from temp (bit6)
+
+ 	outportb(0x64, 0xA8);	//enable mouse port
+
+	outportb(0x64, 0xD4);	//send command to mouse, not kbd
+	outportb(0x60, 0xF4);	//enable data reporting
+
+	//outportb(0x64, 0xD4);
+	//outportb(0x60, 0xE7);	//scaling 2:1
+}
+
+
+
+void isr_mouse()
+{
+	byte inb = inportb(0x60);	//read mouse byte
+	//printf("InB: %x\n", inb);
+	//return;
+	if ((inb == 0xFA) && (mouse_bytesRead < 1))		//ACK
+		return;
+	mouse_inbuffer[mouse_bytesRead] = inb;
+	mouse_bytesRead++;
+	if (mouse_bytesRead == 3)	//complete packet received
+	{
+		mouse_bytesRead = 0;
+		int adjx = (char) mouse_inbuffer[1];
+		int adjy = (char) mouse_inbuffer[2];
+		mouse_x += adjx;
+		mouse_y -= adjy;						//-= because screen y coordinates are opposite mouse y coordinates
+		if (mouse_inbuffer[0] & 0x01)	//left button
+		{
+			video_pset(VXR/2+mouse_x, VYR/2+mouse_y, 0x00FFFFFF);
+			printf("X: %d, Y: %d\n", mouse_x, mouse_y);
+		}
+		else
+		{
+			video_pset(VXR/2+mouse_x, VYR/2+mouse_y, 0x00000000);
+			printf("X: %d, Y: %d\n", mouse_x, mouse_y);
+		}
+	}
+}
+
+
+
+
+

mouse.h

@@ -0,0 +1,17 @@
+// mouse.h
+// 10/03/03
+// Author: Josh Holtrop
+
+
+int mouse_x = 0;
+int mouse_y = 0;
+int mouse_bytesRead = 0;
+byte mouse_inbuffer[16];
+
+void mouse_init();
+void isr_mouse();
+
+
+
+
+

tetris.c

@@ -0,0 +1,7 @@
+
+// tetris.x
+// Author: Josh Holtrop
+// Date: 09/30/03
+
+
+

video.c

@@ -1,10 +1,6 @@
 //video.c
 // 08/13/03 Josh Holtrop
 
-ModeInfoBlock	video_mode;
-byte	*vid_ptr24;
-word	*vid_ptr16;
-dword	*vid_ptr32;
 
 void video_init(ModeInfoBlock *mib)
 {
@@ -134,7 +130,7 @@ void video_psetp(int pixel, dword color)
 	switch(video_mode.BitsPerPixel)
 	{
 	case 16:
-		vid_ptr16[pixel] = ((color&0xFF)>>3) | ((((color>>8)&0xFF)>>2)<<6) | ((((color>>16)&0xFF)>>3)<<11);
+		vid_ptr16[pixel] = ((color&0xFF)>>3) | ((((color>>8)&0xFF)>>2)<<5) | ((((color>>16)&0xFF)>>3)<<11);
 		//vid_ptr16[pixel] = ((color&0xFF)>>3) | ((((color>>8)&0xFF)>>3)<<5) | ((((color>>16)&0xFF)>>3)<<10);
 		break;
 	case 24:

video.h

@@ -1,6 +1,7 @@
 //video.h
 // 08/18/03 Josh Holtrop
 
+
 void video_init();
 void video_horiz(int y, int x1, int x2, dword color);
 void video_vert(int x, int y1, int y2, dword color);
@@ -52,6 +53,12 @@ typedef struct{
 	byte	Reserved[206];
 } ModeInfoBlock;
 
+ModeInfoBlock	video_mode;
+byte	*vid_ptr24;
+word	*vid_ptr16;
+dword	*vid_ptr32;
+
+
 
 
 

vmm.c

@@ -0,0 +1,27 @@
+
+// vmm.c
+// Author: Josh Holtrop
+// Date: 09/30/03
+
+
+void	*malloc(dword bytes)
+{
+
+
+}
+
+
+
+int	free(void *ptr);
+{
+
+
+
+
+}
+
+
+
+
+
+

vmm.h

@@ -0,0 +1,13 @@
+
+// vmm.h
+// Author: Josh Holtrop
+// Date: 09/30/03
+
+
+void   *malloc(dword bytes);
+int	free(void *ptr);
+
+
+
+
+