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VIC initialization fixes

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FeralChild64 committed 2020-10-11 11:45:13 +02:00
1 parent 5c5c14f76a
commit 4eb0923f9c
2 files changed
+7 -2
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src/kernal/board_m65/mega65_viciv_shutdown.s
+4
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@@ -23,6 +23,10 @@ viciv_shutdown:
sta VIC_CTRLA ; enable C64 character set sta VIC_CTRLA ; enable C64 character set
sta VIC_CTRLB ; disable extended resolution and attributes sta VIC_CTRLB ; disable extended resolution and attributes
lda VIC_CTRLC
and #%00101000 ; disable fast mode and various VIC-IV extensions
sta VIC_CTRLC
; Reenable hot registers ; Reenable hot registers
jsr viciv_hotregs_on jsr viciv_hotregs_on
src/kernal/init/e5a0.vicii_init.s
+3 -2
View File
@@ -35,11 +35,12 @@ vicii_init:
; Disable C128 extra keys - just to be sure they will not interfere with anything ; Disable C128 extra keys - just to be sure they will not interfere with anything
stx VIC_XSCAN stx VIC_XSCAN ; store $FF
; Disable the C128 2MHz mode, it prevents VIC-II display from working correctly ; Disable the C128 2MHz mode, it prevents VIC-II display from working correctly
stx VIC_CLKRATE inx
stx VIC_CLKRATE ; store $00
} } } }
; Set up default IO values ; Set up default IO values