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Apple2: Fix permanently disabled IRQ

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Regression introduced in 990d65e:
Pushing status, initializing IRQ handler (which enables IRQ)
then pulling status re-disables IRQ.
This commit is contained in:
Colin Leroy-Mira
2025-06-26 13:08:04 +02:00
committed by Oliver Schmidt
parent bc9ebfb077
commit a028ac4140
1 changed files with 6 additions and 5 deletions
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11
libsrc/apple2/crt0.s
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@@ -56,9 +56,10 @@ init: ldx #zpspace-1
bpl :- bpl :-
; Check for ProDOS. ; Check for ProDOS.
ldy $BF00 ; MLI call entry point lda $BF00 ; MLI call entry point
cpy #$4C ; Is MLI present? (JMP opcode) sec
php ; Remember whether we're running ProDOS sbc #$4C ; Is MLI present? (JMP opcode)
pha ; Backup the result for later
bne basic bne basic
; Check the ProDOS system bit map. ; Check the ProDOS system bit map.
@@ -100,8 +101,8 @@ basic: lda HIMEM
bit $C081 bit $C081
bit $C081 bit $C081
plp ; Are we running ProDOS? pla ; If not running ProDOS, we need to patch 6502 vectors.
beq :+ ; Yes, no need to patch vectors beq :+
lda #<reset_6502 lda #<reset_6502
ldx #>reset_6502 ldx #>reset_6502