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annotate testgst.c @ 995:2bc27415565b

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Fix some stuff with interrupt timing. The change in adjust_int_cycle gets Overdrive working again (vint was not being preferred over hint in some cases). One of the changes seems to have broken Fatal Rewind again, but no other regressions that I can see.
author Michael Pavone <pavone@retrodev.com>
date Sat, 30 Apr 2016 08:37:55 -0700
parents 140af5509ce7
children e9369d6f0101
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rev   line source
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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 "gst.h"
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7 #include <string.h>
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8 #include <stdlib.h>
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9
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10 uint8_t busreq;
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11 uint8_t reset;
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12
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13 int32_t color_map[1 << 12];
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14
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15 void latch_mode(vdp_context * context)
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16 {
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17 }
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18 void ym_data_write(ym2612_context * context, uint8_t value)
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19 {
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20 if (context->selected_reg >= YM_REG_END) {
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21 return;
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22 }
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23 if (context->selected_part) {
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24 if (context->selected_reg < YM_PART2_START) {
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25 return;
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26 }
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27 context->part2_regs[context->selected_reg - YM_PART2_START] = value;
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28 } else {
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29 if (context->selected_reg < YM_PART1_START) {
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30 return;
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31 }
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32 context->part1_regs[context->selected_reg - YM_PART1_START] = value;
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33 }
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34 }
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35
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36 void ym_address_write_part1(ym2612_context * context, uint8_t address)
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37 {
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38 //printf("address_write_part1: %X\n", address);
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39 context->selected_reg = address;
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40 context->selected_part = 0;
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41 }
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42
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43 void ym_address_write_part2(ym2612_context * context, uint8_t address)
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44 {
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45 //printf("address_write_part2: %X\n", address);
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46 context->selected_reg = address;
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47 context->selected_part = 1;
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48 }
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49
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50 uint16_t ram[64*1024];
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51 uint8_t zram[8*1024];
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52
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53
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54 int main(int argc, char ** argv)
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55 {
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56 vdp_context vdp;
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57 ym2612_context ym;
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58 psg_context psg;
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59 m68k_context m68k;
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60 z80_context z80;
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61 genesis_context gen;
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62 if (argc < 3) {
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63 fputs("Usage: testgst infile outfile\n", stderr);
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64 return 1;
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65 }
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66 memset(&gen, 0, sizeof(gen));
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67 memset(&m68k, 0, sizeof(m68k));
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68 memset(&z80, 0, sizeof(z80));
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69 memset(&ym, 0, sizeof(ym));
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70 memset(&vdp, 0, sizeof(vdp));
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71 memset(&psg, 0, sizeof(psg));
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72 m68k.mem_pointers[1] = ram;
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73 z80.mem_pointers[0] = zram;
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74 vdp.vdpmem = malloc(VRAM_SIZE);
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75 gen.vdp = &vdp;
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76 gen.ym = &ym;
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77 gen.psg = &psg;
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78 gen.m68k = &m68k;
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79 gen.z80 = &z80;
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80 uint32_t pc = load_gst(&gen, argv[1]);
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81 save_gst(&gen, argv[2], pc);
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82 return 0;
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83 }