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Merge pull request #2768 from mrdudz/fix2764

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disable the basic interrupt before main(), fixes #2764
This commit is contained in:
Bob Andrews
2025-07-04 17:04:12 +02:00
committed by GitHub
parent b24560c083 a19e00d304
commit 315d6c4ae3
1 changed files with 17 additions and 2 deletions
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15
libsrc/c128/crt0.s
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@@ -64,6 +64,15 @@ L1: lda c_sp,x
jsr initlib jsr initlib
; Disable the BASIC part of the IRQ handler. It would usually (once per frame)
; copy the VIC shadow register, move sprites, play music. This would only get
; in the way, so we turn it off.
lda INIT_STATUS
sta initsave
and #$fe
sta INIT_STATUS
; Set the bank for the file name to our execution bank. We must do this ; Set the bank for the file name to our execution bank. We must do this
; *after* calling the constructors because some of them might depend on ; *after* calling the constructors because some of them might depend on
; the original value of this register. ; the original value of this register.
@@ -88,6 +97,11 @@ L2: lda zpsave,x
dex dex
bpl L2 bpl L2
; Enable the BASIC interrupt again
lda initsave
sta INIT_STATUS
; Place the program return code into BASIC's status variable. ; Place the program return code into BASIC's status variable.
pla pla
@@ -117,3 +131,4 @@ zpsave: .res zpspace
spsave: .res 1 spsave: .res 1
mmusave: .res 1 mmusave: .res 1
initsave: .res 1