flapple/src/applerom.s
2020-03-19 04:08:32 -05:00

25 lines
830 B
ArmAsm

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* Apple Standard Memory Locations
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CLRLORES equ $F832
LORES equ $C050
TXTSET equ $C051
MIXCLR equ $C052
MIXSET equ $C053
TXTPAGE1 equ $C054
TXTPAGE2 equ $C055
KEY equ $C000
C80STOREOFF equ $C000
C80STOREON equ $C001
STROBE equ $C010
SPEAKER equ $C030
VBL equ $C02E
RDVBLBAR equ $C019 ;not VBL (VBL signal low
RAMWRTAUX equ $C005
RAMWRTMAIN equ $C004
SETAN3 equ $C05E ;Set annunciator-3 output to 0
SET80VID equ $C00D ;enable 80-column display mode (WR-only)