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champ.c
100
champ.c
@ -1,10 +1,4 @@
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#define SHOW_SCREEN
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#define SHOW_LOG
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#ifdef SHOW_SCREEN
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#include <X11/Xlib.h>
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#endif
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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@ -24,7 +18,6 @@
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#define OVERFLOW 0x40
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#define NEGATIVE 0x80
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#ifdef SHOW_SCREEN
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Display *dsp;
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Window win;
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GC gc;
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@ -32,6 +25,8 @@ unsigned int white, black;
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Atom wmDelete;
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XEvent evt;
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KeyCode keyQ;
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uint8_t show_screen = 0;
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uint8_t show_log = 1;
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int init_display()
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{
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@ -92,7 +87,6 @@ uint16_t yoffset[192] = {
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0x0350, 0x0750, 0x0b50, 0x0f50, 0x1350, 0x1750, 0x1b50, 0x1f50,
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0x03d0, 0x07d0, 0x0bd0, 0x0fd0, 0x13d0, 0x17d0, 0x1bd0, 0x1fd0
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};
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#endif
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typedef struct {
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uint16_t ip;
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@ -640,11 +634,12 @@ void handle_next_opcode()
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break;
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}
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#ifdef SHOW_LOG
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printf("%04x | %d | %02x | %s %-18s | ", old_ip, cycles, read_opcode, OPCODE_STRINGS[opcode],
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ADDRESSING_MODE_STRINGS[addressing_mode]
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);
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#endif
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if (show_log)
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{
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printf("%04x | %d | %02x | %s %-18s | ", old_ip, cycles, read_opcode, OPCODE_STRINGS[opcode],
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ADDRESSING_MODE_STRINGS[addressing_mode]
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);
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}
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int unhandled_opcode = 0;
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uint8_t t8 = 0;
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@ -950,14 +945,14 @@ void handle_next_opcode()
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exit(1);
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}
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cpu.total_cycles += cycles;
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#ifdef SHOW_LOG
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printf("A: %02x, X: %02x, Y: %02x, FLAGS: %02x, PC: %04x, SP: %02x | %10ld",
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cpu.a, cpu.x, cpu.y, cpu.flags, cpu.ip, cpu.sp, cpu.total_cycles);
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printf("\n");
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#endif
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if (show_log)
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{
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printf("A: %02x, X: %02x, Y: %02x, FLAGS: %02x, PC: %04x, SP: %02x | %10ld",
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cpu.a, cpu.x, cpu.y, cpu.flags, cpu.ip, cpu.sp, cpu.total_cycles);
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printf("\n");
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}
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}
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#ifdef SHOW_SCREEN
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void set_pixel(int px, int py, unsigned int color)
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{
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int x, y;
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@ -982,16 +977,30 @@ void render_hires_screen()
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}
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}
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}
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#endif
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int main(int argc, char** argv)
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{
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if (argc < 2)
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{
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printf("Usage: ./champ [options] <memory dump>\n");
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printf("\n");
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printf("Options:\n");
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printf(" --show-screen\n");
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printf(" --hide-log\n");
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}
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for (int i = 1; i < argc; i++)
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{
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if (strcmp(argv[i], "--show-screen") == 0)
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show_screen = 1;
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if (strcmp(argv[i], "--hide-log") == 0)
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show_log = 0;
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}
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memset(ram, 0, 0x10000);
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load("dump2", 0);
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#ifdef SHOW_SCREEN
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init_display();
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#endif
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load(argv[argc - 1], 0);
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if (show_screen)
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init_display();
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init_cpu(&cpu);
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cpu.ip = 0x6000;
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@ -1015,34 +1024,35 @@ int main(int argc, char** argv)
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// }
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// else
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// break;
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#ifdef SHOW_SCREEN
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if (XEventsQueued(dsp, QueuedAfterFlush) > 0)
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if (show_screen)
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{
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int exit_program = 0;
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XNextEvent(dsp, &evt);
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if (XEventsQueued(dsp, QueuedAfterFlush) > 0)
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{
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int exit_program = 0;
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XNextEvent(dsp, &evt);
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switch (evt.type) {
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switch (evt.type) {
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case (KeyRelease) :
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if (evt.xkey.keycode == keyQ)
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exit_program = 1;
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case (KeyRelease) :
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if (evt.xkey.keycode == keyQ)
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exit_program = 1;
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case (ClientMessage) :
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if (evt.xclient.data.l[0] == wmDelete)
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exit_program = 1;
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break;
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case (ClientMessage) :
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if (evt.xclient.data.l[0] == wmDelete)
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exit_program = 1;
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break;
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}
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if (exit_program)
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break;
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}
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if (ram[0x30b] != old_screen_number)
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{
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old_screen_number = ram[0x30b];
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render_hires_screen();
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}
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if (exit_program)
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break;
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}
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if (ram[0x30b] != old_screen_number)
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{
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old_screen_number = ram[0x30b];
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render_hires_screen();
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}
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#endif
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}
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printf("Total cycles: %d\n", cpu.total_cycles);
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return 0;
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