Rev 8725 | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
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8725 | rgimad | 1 | ;========================================= |
2 | ; initialized data |
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3 | include_debug_strings ; for debug-fdo |
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4 | |||
5 | chip8_fontset db \ |
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6 | 0xF0, 0x90, 0x90, 0x90, 0xF0, \ ; 0 |
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7 | 0x20, 0x60, 0x20, 0x20, 0x70, \ ; 1 |
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8 | 0xF0, 0x10, 0xF0, 0x80, 0xF0, \ ; 2 |
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9 | 0xF0, 0x10, 0xF0, 0x10, 0xF0, \ ; 3 |
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10 | 0x90, 0x90, 0xF0, 0x10, 0x10, \ ; 4 |
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11 | 0xF0, 0x80, 0xF0, 0x10, 0xF0, \ ; 5 |
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12 | 0xF0, 0x80, 0xF0, 0x90, 0xF0, \ ; 6 |
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13 | 0xF0, 0x10, 0x20, 0x40, 0x40, \ ; 7 |
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14 | 0xF0, 0x90, 0xF0, 0x90, 0xF0, \ ; 8 |
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15 | 0xF0, 0x90, 0xF0, 0x10, 0xF0, \ ; 9 |
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16 | 0xF0, 0x90, 0xF0, 0x90, 0x90, \ ; A |
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17 | 0xE0, 0x90, 0xE0, 0x90, 0xE0, \ ; B |
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18 | 0xF0, 0x80, 0x80, 0x80, 0xF0, \ ; C |
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19 | 0xE0, 0x90, 0x90, 0x90, 0xE0, \ ; D |
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20 | 0xF0, 0x80, 0xF0, 0x80, 0xF0, \ ; E |
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21 | 0xF0, 0x80, 0xF0, 0x80, 0x80 ; F |
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22 | |||
23 | opcode dw 0 ; operation code |
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24 | V db 16 dup(0) ; 16 8-bit registers |
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25 | I dw 0 ; additional register (usually used for storing addresses) |
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26 | P_C dw 0 ; program counter |
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27 | S_P dw 0 ; stack pointer |
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28 | delay_timer db 0 |
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29 | sound_timer db 0 |
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30 | stackmem dw STACK_SIZE dup(0) ; stack memory |
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31 | key db KEY_SIZE dup (0) ; keyboard |
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32 | chip8_draw_flag db 0 |
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33 | next_rand dd 1 |
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34 | |||
35 | align 4 |
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36 | fread_struct: |
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37 | .subfunction dd 0 ; + 0 |
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38 | .offset_low dd 0 ; + 4 |
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39 | .offset_high dd 0 ; + 8 |
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40 | .size dd MAX_GAME_SIZE ; + 12 |
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41 | .buffer dd memory + 0x200 ; + 16 |
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42 | db 0 ; + 20 |
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43 | .filename: dd 0 ; + 24 |
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44 | |||
45 | sys_colors system_colors |
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46 | main_window_title db 'CHIP-8 Emulator',0 |
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47 | |||
8734 | rgimad | 48 | imgbuf_ptr dd ? ; pointer to in-memory image buffer |
49 | |||
8725 | rgimad | 50 | ;========================================= |
51 | align 16 |
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52 | _i_end: |
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53 | ; uninitialized data |
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54 | cmdline rb 1024 ; reserve for command line arguments |
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55 | |||
56 | memory rb MEM_SIZE |
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57 | gfx rb GFX_SIZE |
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58 | |||
59 | ;tmp_buf rb 128 |