dos33fsprogs/qboot2/ls.s

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SET_GR = $C050
FULLGR = $C052
PAGE0 = $C054
HIRES = $C057
KEYPRESS = $C000
KEYRESET = $C010
landscape:
bit SET_GR
bit FULLGR
bit PAGE0
bit HIRES
forever:
lda KEYPRESS
bpl forever
bit KEYRESET
;============================
; setup load code
;============================
WHICH_LOAD = $80
lda #2
sta WHICH_LOAD
jmp $119A
.align $100
.incbin "lsc.hgr"