forked from KolibriOS/kolibrios
58 lines
2.1 KiB
PHP
58 lines
2.1 KiB
PHP
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;=========================================
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; initialized data
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include_debug_strings ; for debug-fdo
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chip8_fontset db \
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0xF0, 0x90, 0x90, 0x90, 0xF0, \ ; 0
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0x20, 0x60, 0x20, 0x20, 0x70, \ ; 1
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0xF0, 0x10, 0xF0, 0x80, 0xF0, \ ; 2
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0xF0, 0x10, 0xF0, 0x10, 0xF0, \ ; 3
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0x90, 0x90, 0xF0, 0x10, 0x10, \ ; 4
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0xF0, 0x80, 0xF0, 0x10, 0xF0, \ ; 5
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0xF0, 0x80, 0xF0, 0x90, 0xF0, \ ; 6
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0xF0, 0x10, 0x20, 0x40, 0x40, \ ; 7
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0xF0, 0x90, 0xF0, 0x90, 0xF0, \ ; 8
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0xF0, 0x90, 0xF0, 0x10, 0xF0, \ ; 9
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0xF0, 0x90, 0xF0, 0x90, 0x90, \ ; A
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0xE0, 0x90, 0xE0, 0x90, 0xE0, \ ; B
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0xF0, 0x80, 0x80, 0x80, 0xF0, \ ; C
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0xE0, 0x90, 0x90, 0x90, 0xE0, \ ; D
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0xF0, 0x80, 0xF0, 0x80, 0xF0, \ ; E
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0xF0, 0x80, 0xF0, 0x80, 0x80 ; F
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opcode dw 0 ; operation code
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V db 16 dup(0) ; 16 8-bit registers
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I dw 0 ; additional register (usually used for storing addresses)
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P_C dw 0 ; program counter
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S_P dw 0 ; stack pointer
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delay_timer db 0
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sound_timer db 0
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stackmem dw STACK_SIZE dup(0) ; stack memory
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key db KEY_SIZE dup (0) ; keyboard
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chip8_draw_flag db 0
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next_rand dd 1
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align 4
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fread_struct:
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.subfunction dd 0 ; + 0
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.offset_low dd 0 ; + 4
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.offset_high dd 0 ; + 8
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.size dd MAX_GAME_SIZE ; + 12
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.buffer dd memory + 0x200 ; + 16
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db 0 ; + 20
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.filename: dd 0 ; + 24
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sys_colors system_colors
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main_window_title db 'CHIP-8 Emulator',0
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;=========================================
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align 16
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_i_end:
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; uninitialized data
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cmdline rb 1024 ; reserve for command line arguments
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memory rb MEM_SIZE
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gfx rb GFX_SIZE
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;tmp_buf rb 128
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