41 lines
690 B
Plaintext
41 lines
690 B
Plaintext
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KBD = $C000 ;Read keydown
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KBDSTRB = $C010 ;Reset keybd
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SPKR = $C030 ;Toggle speaker
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; TTL digital output pins on
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; 16-pin DIP game connector
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SETAN0 = $C058
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CLRAN0 = $C059
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SETAN1 = $C05A
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CLRAN1 = $C05B
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SETAN2 = $C05C
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CLRAN2 = $C05D
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SETAN3 = $C05E
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CLRAN3 = $C05F
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PIN12ON = CLRAN3
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PIN12OFF= SETAN3
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PIN13ON = CLRAN2
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PIN13OFF= SETAN2
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PIN14ON = CLRAN1
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PIN14OFF= SETAN1
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PIN15ON = CLRAN0
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PIN15OFF= SETAN0
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;Special for pin 5, except on //gs
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C040STROBE = $C040
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PIN5STROBE = C040STROBE
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SolidApple = $C062 ; read SW1 or SA
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OpenApple = $C061 ; read SW0 or OA
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VBL = $C019 ; vertical blanking
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WAIT = $FCA8 ; wait a little while
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CROUT = $FD8E ; print a CR
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PRBYTE = $FDDA ; print a hex byte
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