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arti
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Add the terminal's actual input parts to the harness as device models on the already-modelled SCN2681 at DUART2: a DEC LK401 keyboard (channel A, 4800 8N1) and a DEC VSXXX-AA mouse (channel B, 4800 8O1), both driven by MAME's host input and wired bit-by-bit to the DUART (rx_a_w/rx_b_w and a_tx_cb/b_tx_cb). Route: the docs, not MAME's lk201. MAME's lk201 device executes the 68HC05 firmware 23-001s9-00.bin, which is not in our ROM set (the downloaded zip only carries the 8051 23-004M2-00.bin, MAME's unused second region), so route 1 is unusable without sourcing that ROM. The models follow PROTOCOL.md: the keyboard answers FD with the 4-byte self-test and reports documented keycodes honouring the division modes; the mouse answers T with its 4-byte self-test and streams 3-byte incremental reports. One physical-layer detail was required: the SCN2681 receiver mis-samples the first byte after a receiver reset unless the line is explicitly idle-high before the start bit. Both models now hold TxD at mark when idle (which is faithful anyway) -- isolated evidence: bit-banging 0x55 into rx_a_w gives RHRA=D5 with no idle-high, RHRA=55 with four idle-high bits. Verified (VT1200_SKIP_LEVEL1=1, input_inject.lua): the OS reads the keyboard keycode 0xC2 (A) and ~900 bytes of VSXXX reports (dx=+16/+32); after the self-test it switches the mouse to stream mode; the X11 cursor arrow is visible at frame 4400 and has moved by frame 4600. Nothing was tuned for the level-0 I/O data-path test: with no env the boot still fails it honestly and the regression baseline is unchanged (PC=3FDCE400 samples=198, 3 PCs). VT1200_IO_PATH_STUB=1 (53/75) and the skip run (Terminal Manager at frame 3000) are also unchanged. ROM md5 unchanged. See harness/mame/INPUT_REPORT.md.
21 lines
753 B
Lua
21 lines
753 B
Lua
-- List every I/O port and field the driver registers, with the tag needed to
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-- address it from Lua. Used to drive the LK401/VSXXX-AA device models.
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--
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-- <mame> vt1200 ... -autoboot_script harness/mame/input_probe.lua
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local machine = manager.machine
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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 < 3 then return end
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print("=== ioport ports ===")
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for tag, port in pairs(machine.ioport.ports) do
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print(string.format("port %s", tag))
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for fname, field in pairs(port.fields) do
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local ok, ftype = pcall(function() return field.type end)
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print(string.format(" field %-28s type=%s name=%s", tostring(fname), tostring(ftype), tostring(field.name)))
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end
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end
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machine:exit()
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end, "vt1200-input-probe")
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