Notices by Foone🏳️‍⚧️ (foone@digipres.club), page 5

The front-panel display is a Optrex DMC-2026I display. 20x20 characters, each character being 5x8 pixels. This variant has a backlight, and it's built on the standard Hitachi HD44780 chip.

Those power these two boards (with room for a third, missing on this model)
This one is the MMR Input Converter, ASSY 70395. 8-channels.

So it's got a separate power supply inside the case, plugged into a splitter on the power button line. (which, on an AT system, carries the full AC wall voltage)
It provides ±18v at half an amp.

The back panel has two PCBs.
The top one is a Parallel Remote board, ASSY 70374

It's got 4 of these UCN6821A 8-channel line drivers.

And the floppy drive is a TEAC FD-235HF, one of the most common models of 3.5" floppy disk drives.

And an MMR Output Converter, ASSY 70372.

The power supply is a US Power SP2-4200F, a 200 watt AT supply.
But modified to have a different connector for the front power switch, so it can be branched off to the other power supply.

Then the bottom board is the MMR Rear Panel, ASSY 70389.
Left to right, we've got Transport, Editor, two Lynx ports, Timecode Out/In, MIDI thru/out/in, video out/in, and word clock out/in.

Doesn't seem to be any smarts on the board. Another of those UCN 5821A 8-channel drivers, and 5 Maxim MAX7219CWG LED drivers

No chips on the other side. Just a bunch of buttons and LEDs. Interesting there's some spots for buttons that aren't present here.

So the front panel. There's three PCBs.
The big one is the 8 TRK FP-70311, which the other two little ones connect to.

and the MMR Transport SW, ASSY 70392.
I think these are combination buttons/lights.

Other two boards:
first an MMR Headphone Monitor, Assy 70396

So yeah. That's the box! I'll plug in my archive box and try to dump the drive later.

okay I dumped the hard drive

it's DOS 6.22

was not expecting that.

also I think I was wrong about these memory sticks: they're 16mb each, not 32mb.
So it it's 48mb fully loaded, not 96mb.

I got bored and decided to yoink the BIOS EPROM.
It's an Award PCI/PNP 586 bios, ©1997, S/N 108740192.

oh wow, the Award BIOS Logo format is WEIRD. it has a size defined in "characters". So, like, this image is 136x84, but is stored as 17x6, because it's 17 characters wide by 6 tall.
And it's got COLOR ATTRIBUTES! You can only use one color per cell, because this is technically a TEXT MODE!

http://justsolve.archiveteam.org/wiki/Award_BIOS_logo

interestingly it has a 32kb rom embedded in it, for the SCSI controller, which isn't on-board. It's for the PCI SCSI adapter

I lit up some of the buttons using a bench power supply. Nice glow! I wonder if they're incandescent?