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26 lines
549 B
ArmAsm
26 lines
549 B
ArmAsm
;
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; Stefan Haubenthal, 2018-04-10
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; Based on code by Mike
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;
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; unsigned char get_tv (void);
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; /* Return the video mode the machine is using */
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;
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.include "get_tv.inc"
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;--------------------------------------------------------------------------
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; _get_tv
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.proc _get_tv
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; detect the system
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lda #TV::NTSC
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tax
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ldy $EDE4 ; VIC init table
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cpy #5
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beq @L0
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lda #TV::PAL
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@L0: rts ; system detected: 0 for NTSC, 1 for PAL
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.endproc
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