37 lines
1.3 KiB
Lua
37 lines
1.3 KiB
Lua
-- Part of JoeyLib, Copyright (c) 2026 Scott Duensing, under the MIT License.
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-- See LICENSE.md for license information.
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-- SPDX-License-Identifier: MIT
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--
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-- Boot regression: confirm Human68k still reaches a live console after the
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-- CRTC clear-timing and VRAM wait-state changes. Counts non-zero bytes in the
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-- text plane (TVRAM plane 0 at $E00000) -- a real console lights up hundreds
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-- of bytes; a hung or blank machine leaves it near zero.
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local cpu = manager.machine.devices[":maincpu"]
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local mem = cpu.spaces["program"]
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local frame = 0
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local function tvramNZ()
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local n = 0
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for i = 0, 8191 do
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if mem:read_u8(0xE00000 + i) ~= 0 then n = n + 1 end
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end
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return n
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end
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emu.register_frame_done(function()
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frame = frame + 1
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if frame % 300 == 0 and frame < 1200 then
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io.write(string.format("BOOTPROG frame=%d tvramNZ=%d pc=%06X\n",
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frame, tvramNZ(), cpu.state["CURPC"].value))
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io.flush()
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elseif frame == 1200 then
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local g = 0
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for i = 0, 4095 do
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if mem:read_u8(0xC00000 + i) ~= 0 then g = g + 1 end
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end
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io.write(string.format("BOOTCHECK frame=%d tvramNZ=%d gvramNZ=%d pc=%06X\n",
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frame, tvramNZ(), g, cpu.state["CURPC"].value))
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io.flush()
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manager.machine:exit()
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end
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end)
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