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Code-style fixes as per PR feedback

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This commit is contained in:
Richard Halkyard
2019-10-31 11:01:00 -05:00
parent bf4c9c3c8c
commit 917e5d4f01
4 changed files with 88 additions and 109 deletions
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34
libsrc/plus4/crt0.s
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@@ -58,20 +58,20 @@ L1: lda sp,x
; Set up the IRQ vector in the banked RAM; and, switch off the ROM.
ldx #<IRQ
ldy #>IRQ
lda #<IRQ
ldx #>IRQ
sei ; No ints, handler not yet in place
sta ENABLE_RAM
stx $FFFE ; Install interrupt handler
sty $FFFF
ldx IRQVec
ldy IRQVec+1
stx IRQInd+1
sty IRQInd+2
ldx #<IRQStub
ldy #>IRQStub
stx IRQVec
sty IRQVec+1
sta $FFFE ; Install interrupt handler
stx $FFFF
lda IRQVec
ldx IRQVec+1
sta IRQInd+1
stx IRQInd+2
lda #<IRQStub
ldx #>IRQStub
sta IRQVec
stx IRQVec+1
cli ; Allow interrupts
@@ -194,18 +194,20 @@ nohandler:
jmp (BRKVec) ; Jump indirect to the break vector
; IRQ stub called by the Kernal IRQ handler, via $314.
; IRQ stub installed at $314, called by our handler above if RAM is banked in,
; or the Kernal IRQ handler if ROM is banked in.
; If we have handlers, call them. We will use a flag here instead of loading
; __INTERRUPTOR_COUNT__ directly, since the condes function is not reentrant.
; The irqcount flag will be set/reset from the main code, to avoid races.
IRQStub:
cld ; Just to be sure
cld ; Just to be sure
sta ENABLE_RAM
ldy irqcount
beq @L1
jsr callirq_y ; Call the IRQ functions
jsr callirq_y ; Call the IRQ functions
@L1: sta ENABLE_ROM
jmp (IRQInd+1) ; Jump to the saved IRQ vector
jmp (IRQInd+1) ; Jump to the saved IRQ vector
; ------------------------------------------------------------------------
; Data