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Disable potentially enabled double-width graphics.

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This commit is contained in:
Oliver Schmidt 2020-05-04 22:22:32 +02:00
parent cbf0c1d1dd
commit 5b56c6e3a2
3 changed files with 22 additions and 8 deletions
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6
asminc/apple2.inc
View File

@ -58,7 +58,13 @@ LOWSCR := $C054 ; Page 1
HISCR := $C055 ; Page 2
LORES := $C056 ; Lores graphics
HIRES := $C057 ; Hires graphics
DHIRESON := $C05E ; Enable double-width graphics
DHIRESOFF := $C05F ; Disable double-width graphics
; Game controller
BUTN0 := $C061 ; Open-Apple Key
BUTN1 := $C062 ; Closed-Apple Key
; IOU
IOUDISON := $C07E ; Disable IOU
IOUDISOFF := $C07F ; Enable IOU

4
libsrc/apple2/tgi/a2.hi.s
View File

@ -175,6 +175,10 @@ INIT:
; Switch into graphics mode
bit MIXCLR
bit HIRES
.ifdef __APPLE2ENH__
sta IOUDISON
bit DHIRESOFF
.endif
bit TXTCLR
; Beagle Bros Shape Mechanic fonts don't

4
libsrc/apple2/tgi/a2.lo.s
View File

@ -126,6 +126,10 @@ INIT:
bit $C082 ; Switch in ROM
jsr SETGR
bit MIXCLR
.ifdef __APPLE2ENH__
sta IOUDISON
bit DHIRESOFF
.endif
bit $C080 ; Switch in LC bank 2 for R/O
; Done, reset the error code