mirror of
https://git.k-space.ee/arti/vt1200.git
synced 2026-10-30 12:03:54 +02:00
49 lines
1.5 KiB
Lua
49 lines
1.5 KiB
Lua
-- VT1200 firmware execution harness (headless, Lua debugger API).
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--
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-- Run:
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-- <mame> vt1200 -rompath harness/mame/roms \
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-- -video none -sound none -nothrottle \
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-- -debug -debugger none \
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-- -autoboot_script harness/mame/trace.lua -autoboot_delay 0
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--
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-- Proves the firmware executes from the reset vector and writes an
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-- instruction trace of the first frames.
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local function hex(v) return string.format("%08X", v) end
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local machine = manager.machine
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local cpu = machine.devices[':maincpu']
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local dbg = machine.debugger
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local pc = cpu.state['PC']
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local prog = cpu.spaces['program']
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if not dbg then
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print("ERROR: debugger not enabled; pass -debug")
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machine:exit()
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return
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end
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local base = "/home/arti/code/k-space/vt1200/harness/mame/"
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local tracepath = base .. "vt1200-reset.trace"
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print(string.format("[space] program shift=%d data_width=%d", prog.shift, prog.data_width))
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print(string.format("PC at harness start = %s (expect 3F200040)", hex(pc.value)))
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dbg.visible_cpu = cpu
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dbg:command("trace " .. tracepath .. ",maincpu,noloop")
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dbg:command("dasm " .. base .. "reset.dasm,3f200000,200,1")
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-- Let the machine run; stop after a couple of frames.
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local frames = 0
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emu.register_frame_done(function()
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frames = frames + 1
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if frames >= 2 then
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dbg:command("trace off")
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print(string.format("after %d frames: PC=%s", frames, hex(pc.value)))
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machine:exit()
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end
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end, "vt1200-harness")
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-- The debugger stops the machine at the reset vector; release it.
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dbg.execution_state = 'run'
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