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Swap in LC before destructors, ROM after

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This commit is contained in:
Colin Leroy-Mira
2024-01-21 16:50:59 +01:00
committed by Oliver Schmidt
parent 57e65a6bf6
commit f0b5b02966
3 changed files with 7 additions and 4 deletions
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2
doc/apple2.sgml
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@@ -62,7 +62,7 @@ Special locations:
</descrip><p> </descrip><p>
While running <tt/main()/ the Language Card bank 2 is enabled for read access. While running <tt/main()/ the Language Card bank 2 is enabled for read access.
However while running module constructors/destructors the Language Card is disabled. However while running module constructors the Language Card is disabled.
Enabling the Language Card allows to use it as additional memory for cc65 Enabling the Language Card allows to use it as additional memory for cc65
generated code. However code is never automatically placed there. Rather code generated code. However code is never automatically placed there. Rather code

2
doc/apple2enh.sgml
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@@ -63,7 +63,7 @@ Special locations:
</descrip><p> </descrip><p>
While running <tt/main()/ the Language Card bank 2 is enabled for read access. While running <tt/main()/ the Language Card bank 2 is enabled for read access.
However while running module constructors/destructors the Language Card is disabled. However while running module constructors the Language Card is disabled.
Enabling the Language Card allows to use it as additional memory for cc65 Enabling the Language Card allows to use it as additional memory for cc65
generated code. However code is never automatically placed there. Rather code generated code. However code is never automatically placed there. Rather code

7
libsrc/apple2/crt0.s
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@@ -40,12 +40,15 @@ _exit: ldx #<exit
lda #>exit lda #>exit
jsr reset ; Setup RESET vector jsr reset ; Setup RESET vector
; Switch in ROM, in case it wasn't already switched in by a RESET. ; Switch in LC bank 2 for R/O in case it was switched out by a RESET.
bit $C082 bit $C080
; Call the module destructors. ; Call the module destructors.
jsr donelib jsr donelib
; Switch in ROM.
bit $C082
; Restore the original RESET vector. ; Restore the original RESET vector.
exit: ldx #$02 exit: ldx #$02
: lda rvsave,x : lda rvsave,x