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https://github.com/rkujawa/rk65c02.git
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a73ebc3024
- interrupts: IRQ vector at $FFFE, vector device at $FFFC, idle_wait + assert_irq - hello_serial: custom bus device at $DE00, guest writes host prints - stepper: rk65c02_step(1) loop with regs and disassembly - jit_bench: min3.rom interpreter vs JIT wall time - breakpoints: debug_breakpoint_add at min3 entry, inspect then continue - README: document new examples, run from examples/ or make run-<name> - Makefile: EXAMPLES and run-* targets for all five Made-with: Cursor
23 lines
360 B
ArmAsm
23 lines
360 B
ArmAsm
; Interrupts example — IRQ vector at $FFFE, minimal handler, host asserts IRQ.
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; 0x0200 = IRQ count (handler increments), 0x0201 = WAI wake count.
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; Host sets vectors at $FFFC (reset -> start) and $FFFE (IRQ -> irq_handler).
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.org 0xC000
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start:
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jmp main
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irq_handler:
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inc 0x0200
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rti
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main:
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cli
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loop:
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wai
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inc 0x0201
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lda 0x0201
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cmp #3
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bne loop
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stp
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