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21 lines
469 B
ArmAsm
21 lines
469 B
ArmAsm
;
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; 2020-05-02, Greg King
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;
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; void __fastcall__ set_tv (unsigned char);
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; /* Set the video mode the machine will use. */
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;
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.export _set_tv
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.include "cx16.inc"
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.proc _set_tv
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stz VERA::CTRL ; Use display register bank 0
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eor VERA::DISP::VIDEO
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and #%00000111
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eor VERA::DISP::VIDEO ; Replace old mode with new mode
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sta VERA::DISP::VIDEO
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rts
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.endproc
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