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