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Use vectors for irq and nmi

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This commit is contained in:
Byron Lathi
2023-11-21 18:53:17 -08:00
parent 1714a1e6da
commit 102c4dfe8a
6 changed files with 254 additions and 325 deletions
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9
sw/kernel/interrupts/interrupt.s
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@@ -4,7 +4,7 @@
.import _enable_irq
.export _irq_int, _nmi_int
.export irq_int, nmi_int
.export _register_irq
IRQ_CMD_ADDR = $effc
@@ -12,13 +12,14 @@ IRQ_DAT_ADDR = $effd
IRQ_CMD_READIRQ = $00
.proc _nmi_int
.proc nmi_int
rti
.endproc
; _irq_int
.proc _irq_int
; irq_int
.proc irq_int
; Load IRQ number
lda #IRQ_CMD_READIRQ
sta IRQ_CMD_ADDR