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IENTAUX/IENTMAIN macros for IRQ handlers. No CLI!

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Bobbi Webber-Manners 2021-08-17 12:00:50 -04:00
parent 0d93ec933c
commit 5313c6188e
4 changed files with 23 additions and 4 deletions
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applecorn.po
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19
applecorn.s
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@ -128,6 +128,25 @@ ENTMAIN MAC
CLI ; Re-enable IRQ after XFER CLI ; Re-enable IRQ after XFER
EOM EOM
* Macro called on re-entry to aux memory
* For use in interrupt handlers (no CLI!)
IENTAUX MAC
LDX $0101 ; Recover alt SP
TXS
LDX STRTBCKL
STX STRTL
LDX STRTBCKH
STX STRTH
EOM
* Macro called on re-entry to main memory
* For use in interrupt handlers (no CLI!)
IENTMAIN MAC
TXS ; Main SP already in X
LDX $C081 ; Bank in ROM
LDX $C081
EOM
* Enable writing to main memory (for code running in aux) * Enable writing to main memory (for code running in aux)
WRTMAIN MAC WRTMAIN MAC
SEI ; Keeps IRQ handler easy SEI ; Keeps IRQ handler easy

6
auxmem.misc.s
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@ -173,15 +173,15 @@ IRQBRKHDLR
:IRQ >>> XF2MAIN,A2IRQ ; Bounce to Apple IRQ handler :IRQ >>> XF2MAIN,A2IRQ ; Bounce to Apple IRQ handler
IRQBRKRET IRQBRKRET
>>> ENTAUX >>> IENTAUX ; IENTAUX does not do CLI
PLA ; TODO: Pass on to IRQ1V PLA ; TODO: Pass on to IRQ1V
TAX TAX
PLA PLA
NULLRTI RTI NULLRTI RTI
* Invoked from GSBRK in main memory. On IIgs only. * Invoked from GSBRK in main memory. On IIgs only.
GSBRKAUX >>> ENTAUX GSBRKAUX >>> IENTAUX ; IENTAUX does not do CLI
JMP IRQBRKHDLR ; See if this works!! JMP IRQBRKHDLR
PRERR LDY #$01 PRERR LDY #$01
PRERRLP LDA (FAULT),Y PRERRLP LDA (FAULT),Y

2
mainmem.s
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@ -7,7 +7,7 @@
* Trampoline in main memory used by aux memory IRQ handler * Trampoline in main memory used by aux memory IRQ handler
* to invoke Apple II / ProDOS IRQs in main memory * to invoke Apple II / ProDOS IRQs in main memory
A2IRQ >>> ENTMAIN A2IRQ >>> IENTMAIN ; IENTMAIN does not do CLI
JSR A2IRQ2 JSR A2IRQ2
>>> XF2AUX,IRQBRKRET >>> XF2AUX,IRQBRKRET
A2IRQ2 PHP ; Fake things to look like IRQ A2IRQ2 PHP ; Fake things to look like IRQ