; irqEntry -- the interrupt memBlockIrq.lua injects: a native-mode handler ; that saves every register, gives the C code its own direct page (any ; interrupt code that runs C must: C keeps its scratch in the direct ; page) and DBR 0, runs irqNested and returns with RTI. IRQ_D = 0x0200 .text .globl irqEntry irqEntry: rep #0x30 pha phx phy phb phd pea 0 plb plb lda #IRQ_D tcd jsl irqNested pld plb ply plx pla rti