WeeGUI/zeropage.s
2018-02-28 15:43:14 -05:00

26 lines
536 B
ArmAsm

;
; zeropage.s
; Zero page information
;
; Created by Quinn Dunki on 8/15/14.
; Copyright (c) 2014 One Girl, One Laptop Productions. All rights reserved.
;
; Reserved locations
INVERSE = $32 ; Text output state
CH = $24 ; Cursor X pos
CV = $25 ; Cursor Y pos
BASL = $28 ; Current video memory line
BASH = $29 ; Current video memory line
; Zero page locations we use (unused by Monitor, Applesoft, or ProDOS)
PARAM0 = $06
PARAM1 = $07
PARAM2 = $08
PARAM3 = $09
SCRATCH0 = $19
SCRATCH1 = $1a
SCRATCH2 = $1b