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annotate ztestrun.c @ 819:ab017fb09e77

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Added support for an IO memory map in Z80 core
author Michael Pavone <pavone@retrodev.com>
date Wed, 29 Jul 2015 00:03:36 -0700
parents 5bf4e77b1a43
children 74cc31040521
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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 #include <stddef.h>
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13
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14 uint8_t z80_ram[0x2000];
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15
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16 uint8_t z80_unmapped_read(uint32_t location, void * context)
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17 {
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18 return 0xFF;
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19 }
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20
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21 void * z80_unmapped_write(uint32_t location, void * context, uint8_t value)
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22 {
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23 return context;
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24 }
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25
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26 const memmap_chunk z80_map[] = {
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27 { 0x0000, 0x4000, 0x1FFF, 0, MMAP_READ | MMAP_WRITE | MMAP_CODE, z80_ram, NULL, NULL, NULL, NULL },
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28 { 0x4000, 0x10000, 0xFFFF, 0, 0, NULL, NULL, NULL, z80_unmapped_read, z80_unmapped_write}
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29 };
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30
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31 void z80_next_int_pulse(z80_context * context)
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32 {
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33 context->int_pulse_start = context->int_pulse_end = CYCLE_NEVER;
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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 char *fname = NULL;
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43 uint8_t retranslate = 0;
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44 for (int i = 1; i < argc; i++)
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45 {
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46 if (argv[i][0] == '-') {
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47 switch(argv[i][1])
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48 {
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49 case 'r':
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50 retranslate = 1;
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51 break;
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52 default:
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53 fprintf(stderr, "Unrecognized switch -%c\n", argv[i][1]);
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54 exit(1);
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55 }
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56 } else if (!fname) {
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57 fname = argv[i];
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58 }
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59 }
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60 if (!fname) {
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61 fputs("usage: ztestrun zrom [cartrom]\n", stderr);
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62 exit(1);
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63 }
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64 FILE * f = fopen(fname, "rb");
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65 if (!f) {
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66 fprintf(stderr, "unable to open file %s\n", fname);
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67 exit(1);
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68 }
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69 fseek(f, 0, SEEK_END);
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70 filesize = ftell(f);
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71 fseek(f, 0, SEEK_SET);
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72 filesize = filesize < sizeof(z80_ram) ? filesize : sizeof(z80_ram);
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73 if (fread(z80_ram, 1, filesize, f) != filesize) {
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74 fprintf(stderr, "error reading %s\n",fname);
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75 exit(1);
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76 }
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77 fclose(f);
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78 init_z80_opts(&opts, z80_map, 2, NULL, 0, 1);
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79 init_z80_context(&context, &opts);
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80 //Z80 RAM
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81 context.mem_pointers[0] = z80_ram;
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82 if (retranslate) {
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83 //run core long enough to translate code
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84 z80_run(&context, 1);
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85 for (int i = 0; i < filesize; i++)
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86 {
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87 z80_handle_code_write(i, &context);
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88 }
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89 z80_assert_reset(&context, context.current_cycle);
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90 z80_clear_reset(&context, context.current_cycle + 3);
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91 z80_adjust_cycles(&context, context.current_cycle);
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92 }
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93 z80_run(&context, 1000);
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94 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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95 context.regs[Z80_A], context.regs[Z80_B], context.regs[Z80_C],
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96 context.regs[Z80_D], context.regs[Z80_E],
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97 (context.regs[Z80_H] << 8) | context.regs[Z80_L],
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98 (context.regs[Z80_IXH] << 8) | context.regs[Z80_IXL],
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99 (context.regs[Z80_IYH] << 8) | context.regs[Z80_IYL],
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100 context.sp, context.im, context.iff1, context.iff2);
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101 printf("Flags: SZVNC\n"
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102 " %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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103 puts("--Alternate Regs--");
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104 printf("A: %X\nB: %X\nC: %X\nD: %X\nE: %X\nHL: %X\n",
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105 context.alt_regs[Z80_A], context.alt_regs[Z80_B], context.alt_regs[Z80_C],
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106 context.alt_regs[Z80_D], context.alt_regs[Z80_E],
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107 (context.alt_regs[Z80_H] << 8) | context.alt_regs[Z80_L]);
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108 return 0;
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109 }