Mercurial > repos > blastem
annotate test.c @ 1637:95880d947257
Fix for VRAM byte write order broke VDP FIFO testing ROM results. This change cleans up VRAM writes and fixes the regression while preserving the correct VRAM byte write order
author | Michael Pavone <pavone@retrodev.com> |
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date | Sun, 11 Nov 2018 22:39:29 -0800 |
parents | 15d9359fd771 |
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1 #include <stdint.h> |
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2 #include <stdlib.h> |
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3 #include <string.h> |
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4 #include <stdio.h> |
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5 #include "vdp.h" |
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6 |
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7 int headless = 1; |
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8 uint16_t read_dma_value(uint32_t address) |
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9 { |
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10 return 0; |
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11 } |
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12 |
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13 uint32_t render_map_color(uint8_t r, uint8_t g, uint8_t b) |
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14 { |
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15 return 0; |
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16 } |
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17 |
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18 void render_alloc_surfaces(vdp_context * context) |
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19 { |
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20 context->oddbuf = context->framebuf = malloc(512 * 256 * 4 * 2); |
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21 memset(context->oddbuf, 0, 512 * 256 * 4 * 2); |
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22 context->evenbuf = ((char *)context->oddbuf) + 512 * 256 * 4; |
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23 } |
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24 |
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25 int check_hint_time(vdp_context * v_context) |
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26 { |
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27 uint32_t orig_hint_cycle = vdp_next_hint(v_context); |
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28 uint32_t cur_hint_cycle; |
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29 printf("hint cycle is %d at vcounter: %d, hslot: %d\n", orig_hint_cycle, v_context->vcounter, v_context->hslot); |
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30 int res = 1; |
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31 while ((cur_hint_cycle = vdp_next_hint(v_context)) > v_context->cycles) |
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32 { |
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33 if (cur_hint_cycle != orig_hint_cycle) { |
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34 fprintf(stderr, "ERROR: hint cycle changed to %d at vcounter: %d, hslot: %d\n", cur_hint_cycle, v_context->vcounter, v_context->hslot); |
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35 orig_hint_cycle = cur_hint_cycle; |
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36 res = 0; |
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37 } |
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38 vdp_run_context(v_context, v_context->cycles + 1); |
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39 } |
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40 printf("hint fired at cycle: %d, vcounter: %d, hslot: %d\n", cur_hint_cycle, v_context->vcounter, v_context->hslot); |
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41 vdp_int_ack(v_context, 4); |
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42 return res; |
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43 } |
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44 |
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45 |
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46 int main(int argc, char ** argv) |
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47 { |
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48 vdp_context v_context; |
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49 init_vdp_context(&v_context, 0); |
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50 vdp_control_port_write(&v_context, 0x8144); |
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51 vdp_control_port_write(&v_context, 0x8C81); |
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52 vdp_control_port_write(&v_context, 0x8A7F); |
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53 vdp_control_port_write(&v_context, 0x8014); |
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54 v_context.hint_counter = 0x7F; |
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55 v_context.vcounter = 128; |
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56 v_context.hslot = 165; |
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57 //check single shot behavior |
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58 int res = check_hint_time(&v_context); |
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59 //check every line behavior |
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60 while (v_context.vcounter < 225) |
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61 { |
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62 vdp_run_context(&v_context, v_context.cycles + 1); |
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63 } |
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64 vdp_control_port_write(&v_context, 0x8A00); |
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65 int hint_count = 0; |
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66 while (res && v_context.vcounter != 224) |
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67 { |
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68 res = res && check_hint_time(&v_context); |
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69 hint_count++; |
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70 } |
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71 if (res && hint_count != 225) { |
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72 fprintf(stderr, "ERROR: hint count should be 225 but was %d instead\n", hint_count); |
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73 res = 0; |
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74 } |
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75 return 0; |
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76 } |