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annotate ztestrun.c @ 593:5ef3fe516da9

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Z80 core is sort of working again
author Michael Pavone <pavone@retrodev.com>
date Mon, 22 Dec 2014 20:55:10 -0800
parents 140af5509ce7
children f838bc0aeb7c
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1 /*
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2 Copyright 2013 Michael Pavone
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3 This file is part of BlastEm.
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4 BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text.
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5 */
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6 #include "z80inst.h"
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7 #include "z80_to_x86.h"
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8 #include "mem.h"
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9 #include "vdp.h"
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10 #include <stdio.h>
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11 #include <stdlib.h>
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12
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13 uint8_t z80_ram[0x2000];
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14
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15 #define MCLKS_PER_Z80 15
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16 //TODO: Figure out the exact value for this
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17 #define MCLKS_PER_FRAME (MCLKS_LINE*262)
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18 #define VINT_CYCLE ((MCLKS_LINE * 226)/MCLKS_PER_Z80)
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19 #define CYCLE_NEVER 0xFFFFFFFF
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20
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21 uint8_t z80_unmapped_read(uint32_t location, void * context)
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22 {
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23 return 0xFF;
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24 }
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25
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26 void * z80_unmapped_write(uint32_t location, void * context, uint8_t value)
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27 {
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28 return context;
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29 }
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30
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31 const memmap_chunk z80_map[] = {
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32 { 0x0000, 0x4000, 0x1FFF, 0, MMAP_READ | MMAP_WRITE | MMAP_CODE, z80_ram, NULL, NULL, NULL, NULL },
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33 { 0x4000, 0x10000, 0xFFFF, 0, MMAP_READ | MMAP_WRITE, NULL, NULL, NULL, z80_unmapped_read, z80_unmapped_write}
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34 };
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35
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36 int main(int argc, char ** argv)
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37 {
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38 long filesize;
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39 uint8_t *filebuf;
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40 z80_options opts;
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41 z80_context context;
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42 if (argc < 2) {
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43 fputs("usage: transz80 zrom [cartrom]\n", stderr);
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44 exit(1);
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45 }
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46 FILE * f = fopen(argv[1], "rb");
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47 if (!f) {
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48 fprintf(stderr, "unable to open file %s\n", argv[2]);
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49 exit(1);
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50 }
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51 fseek(f, 0, SEEK_END);
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52 filesize = ftell(f);
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53 fseek(f, 0, SEEK_SET);
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54 fread(z80_ram, 1, filesize < sizeof(z80_ram) ? filesize : sizeof(z80_ram), f);
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55 fclose(f);
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56 init_x86_z80_opts(&opts, z80_map, 2);
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57 init_z80_context(&context, &opts);
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58 //Z80 RAM
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59 context.mem_pointers[0] = z80_ram;
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60 context.sync_cycle = context.target_cycle = 1000;
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61 context.int_cycle = CYCLE_NEVER;
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62 z80_reset(&context);
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63 while (context.current_cycle < 1000) {
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64 context.run(&context);
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65 }
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66 printf("A: %X\nB: %X\nC: %X\nD: %X\nE: %X\nHL: %X\nIX: %X\nIY: %X\nSP: %X\n\nIM: %d, IFF1: %d, IFF2: %d\n",
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67 context.regs[Z80_A], context.regs[Z80_B], context.regs[Z80_C],
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68 context.regs[Z80_D], context.regs[Z80_E],
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69 (context.regs[Z80_H] << 8) | context.regs[Z80_L],
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70 (context.regs[Z80_IXH] << 8) | context.regs[Z80_IXL],
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71 (context.regs[Z80_IYH] << 8) | context.regs[Z80_IYL],
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72 context.sp, context.im, context.iff1, context.iff2);
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73 printf("Flags: SZVNC\n"
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74 " %d%d%d%d%d\n", context.flags[ZF_S], context.flags[ZF_Z], context.flags[ZF_PV], context.flags[ZF_N], context.flags[ZF_C]);
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75 puts("--Alternate Regs--");
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76 printf("A: %X\nB: %X\nC: %X\nD: %X\nE: %X\nHL: %X\n",
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77 context.alt_regs[Z80_A], context.alt_regs[Z80_B], context.alt_regs[Z80_C],
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78 context.alt_regs[Z80_D], context.alt_regs[Z80_E],
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79 (context.alt_regs[Z80_H] << 8) | context.alt_regs[Z80_L]);
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80 return 0;
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81 }