conway's game of life
This commit is contained in:
aramya
parent
9ff541a0d3
commit
82a2c992d9
3
Makefile
3
Makefile
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@ -1,8 +1,7 @@
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MACHINE=mac99
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PPC=powerpc-linux-gnu
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QEMU=qemu-system-ppc
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RES=1280x768x32
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RES=1360x720x32
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DISK.APM: kernel.elf bootinfo.txt scripts/kpartx.sh
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dd bs=512K count=2 if=/dev/zero of=DISK.APM
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parted DISK.APM --script mklabel mac mkpart primary hfs+ 32.8KB 100%
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132
entry/boot.c
132
entry/boot.c
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@ -1,22 +1,35 @@
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#include "boot.h"
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void __stack_chk_fail_local(void){}
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void get_io_type(void)
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{
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if (*(unsigned char*)__VRAM__BEIGE == beige) IO_TYPE = beige;
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else if (*(unsigned char*)__VRAM__MAC99 == mac99) IO_TYPE = mac99;
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if (IO_TYPE == beige)
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{
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screen_width = (*(unsigned int*)(__VRAM__BEIGE+4));
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screen_height = (*(unsigned int*)(__VRAM__BEIGE+8));
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}
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else if (IO_TYPE == mac99)
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{
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screen_width = (*(unsigned int*)(__VRAM__MAC99+4));
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screen_height = (*(unsigned int*)(__VRAM__MAC99+8));
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}
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}
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void init(void)
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{
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if (IO_TYPE == beige)
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{
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for(;;); // unsupported yet.
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p_vram = __VRAM__BEIGE;
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p_bios = __BIOS__BEIGE;
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p_timer= __TIMR__BEIGE;
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}
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else if (IO_TYPE == mac99)
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{
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p_vram = __VRAM__MAC99;
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p_bios = __BIOS__MAC99;
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p_mouse=__MOUSE__MAC99;
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p_keyboard=__KEYBOARD__MAC99;
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p_timer= __TIMR__MAC99;
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}
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}
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@ -24,29 +37,96 @@ void main(void)
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{
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get_io_type();
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init();
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int N = screen_width;
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int i,j,ip1,jp1,nei;
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unsigned int random;
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unsigned char universe[N][N];
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unsigned char universe2[N][N];
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for (i = 0; i < N; i++) for (j = 0; j < N; j++)
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{
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random = (*p_timer );
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if (!(random%3)) universe[i][j] = 1;
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else universe[i][j] = 0;
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p_bios++;
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}
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for(;;)
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{
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memcpy_24bit(0x81000000, p_mouse, 1, 0x100000);
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init();
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for (i = 0; i < N; i++) for (j = 0; j < N; j++)
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{
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if (universe[i][j]) fillscreen(p_vram, 255,255,255,1);
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else fillscreen(p_vram,200 ,110,50,1);
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p_vram+=4;
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}
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for (i = 0; i < N; i++) for (j = 0; j < N; j++) universe2[i][j] = universe[i][j];
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for (i = 0; i < N; i++) for (j = 0; j < N; j++)
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{
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nei = 0;
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ip1 = i + 1;
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jp1 = j + 1;
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if (i == N) ip1=0;
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if (j == N) jp1=0;
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if (!i) ip1=N;
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if (!j) jp1=N;
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if (universe[i][jp1]) nei++;
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if (universe[ip1][j]) nei++;
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if (universe[i][j-1]) nei++;
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if (universe[i-1][j]) nei++;
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if (universe[ip1][jp1]) nei++;
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if (universe[ip1][j-1]) nei++;
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if (universe[i-1][jp1]) nei++;
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if (universe[i-1][j-1]) nei++;
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if (universe[i][j])
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{
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if (nei == 2 || nei == 3) universe2[i][j] = universe[i][j];
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else universe2[i][j] = 0;
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}
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else
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{
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if (nei == 3) universe2[i][j] = 1;
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else universe2[i][j] = universe[i][j];
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}
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}
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for (i = 0; i < N; i++) for (j = 0; j < N; j++) universe[i][j] = universe2[i][j];
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}
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}
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void fillscreen(unsigned char a, unsigned char b, unsigned char c, int n)
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void fillscreen(unsigned int* addr, unsigned char a, unsigned char b, unsigned char c, int n)
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{
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init();
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unsigned char* ptr = addr;
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for (unsigned int i = 0; i<n; i++)
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{
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//24-bit VGA
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*p_vram = 0;
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p_vram++;
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*p_vram = a;
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p_vram++;
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*p_vram = b;
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p_vram++;
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*p_vram = c;
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p_vram++;
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*ptr = a;
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ptr++;
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*ptr = b;
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ptr++;
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*ptr = c;
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ptr++;
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*ptr = 0;
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ptr++;
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}
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}
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void colorscreen(unsigned int* addr, unsigned char a, unsigned char b, unsigned char c, int n)
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{
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unsigned char* ptr = addr;
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for (unsigned int i = 0; i<n; i++)
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{
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//24-bit VGA
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*ptr = a;
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ptr++;
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*ptr = b;
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ptr++;
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ptr++;
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*ptr = 0;
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ptr++;
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}
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}
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void memcpy(unsigned char* dest, unsigned char* src, int n)
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{
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unsigned char* destination = dest;
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@ -57,31 +137,11 @@ void memcpy(unsigned char* dest, unsigned char* src, int n)
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destination++; source++;
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}
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}
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void memcpy_24bit(unsigned char* dest, unsigned char* src, int n, int size)
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{
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unsigned char* destination = dest;
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unsigned char* source = src;
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for (int i = 0; i<n; i++)
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{
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for (int k = 0; k < size; k++)
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{
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*destination = 0;
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destination++;
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for (int j = 0; j < 3; j++)
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{
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*destination = *source;
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destination++;
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}
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}
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source++;
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}
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}
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unsigned char u8_extract_bit(unsigned char n, unsigned char bit)
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{
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return (n & (0b10000000 >> bit)) >> (7 - bit);
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return (n & (0b10000000 >> bit)) >> (7 - bit);
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}
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unsigned char u32_extract_bit(unsigned int n, unsigned char bit)
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{
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return (n & (0x80000000 >> bit)) >> (31 - bit);
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21
entry/boot.h
21
entry/boot.h
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@ -3,22 +3,25 @@
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#define __VRAM__BEIGE 0x80000000
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#define __BIOS__BEIGE 0xFFC00000
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#define __TIMR__BEIGE 0x1badc0de //later
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#define __VRAM__MAC99 0x81000000
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#define __BIOS__MAC99 0XFFF00000
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#define __MOUSE__MAC99 0x8008003C
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#define __KEYBOARD__MAC99 0x80080038
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#define __BIOS__MAC99 0xFFF00000
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#define __TIMR__MAC99 0x80080038
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void __stack_chk_fail_local();
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unsigned char IO_TYPE;
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unsigned int screen_width;
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unsigned int screen_height;
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unsigned char* p_vram;
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unsigned char* p_bios;
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unsigned char* p_keyboard;
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unsigned char* p_mouse;
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unsigned char* p_timer;
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unsigned char u8_extract_bit(unsigned char n, unsigned char bit);
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void get_io_type(void);
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void init(void);
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void fillscreen(unsigned char a, unsigned char b, unsigned char c, int n);
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void fillscreen(unsigned int* addr, unsigned char a, unsigned char b, unsigned char c, int n);
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void memcpy(unsigned char* dest, unsigned char* src, int n);
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void memcpy_24bit(unsigned char* dest, unsigned char* src, int n, int size);
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unsigned char u8_extract_bit(unsigned char n, unsigned char bit);
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unsigned char u32_extract_bit(unsigned int n, unsigned char bit);
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void colorscreen(unsigned int* addr, unsigned char a, unsigned char b, unsigned char c, int n);
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@ -1,3 +1,3 @@
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.globl _start
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_start:
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_start:
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b main
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@ -4,21 +4,23 @@
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: sup - dup abs = ;
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: inf dup sup 1 + ;
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: diff = if 0 else -1 then ;
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: fba frame-buffer-adr ;
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: beige-vram 80000000 ; : mac99-vram 81000000 ;
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: beige-error ." G3 Beige machine is not supported yet. Please run it with a post-1999 PowerPC Mac." ;
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: hardware-error ." Hardware not supported." ;
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variable run
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fba beige-vram = if ." Beige hardware detected" cr 0BE beige-vram c! then
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fba mac99-vram = if ." mac99 hardware detected" cr 05A mac99-vram c! then
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fba beige-vram = if screen-width 4 beige-vram + l! then
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fba beige-vram = if screen-height 8 beige-vram + l! then
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fba mac99-vram = if screen-width 4 mac99-vram + l! then
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fba mac99-vram = if screen-height 8 mac99-vram + l! then
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variable run
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-1 run !
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fba beige-vram = if beige-error cr 100 0 do 0BE i beige-vram + c! loop then
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fba mac99-vram = if ." mac99" cr 100 0 do 05A i mac99-vram + c! loop then
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fba beige-vram diff fba mac99-vram diff and if hardware-error cr 0 run ! then
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run @ 0 = if 1 0 do 0 +loop then
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80080000 100 dump
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80080000 100 dump
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80080000 100 dump
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boot hd:,\boot\kernel.elf
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