Notices by Foone🏳️‍⚧️ (foone@digipres.club), page 4

heh. The manual lists the approved hard drives for use with it.
I guess none of the letters in "SCSI" are "standard"!

check out this wackiness in a removable hard drive sled inside a TASCAM MMR-8: It has a key lock, but the key lock doesn't lock the door, as you'd expect. Instead the lock is just a switch, and it communicates back with some board, which controls a solenoid to unlock the door. Now that's some paranoid over-design!

fun fact: it turns out that inside it's built on a Socket 7 motherboard. From ASUS!

Anyway, this is the TASCAM MMR-8.
Sadly it's not as useful (for me) as I was hoping: it has a lot of video support, but it's not really for doing video: it's for syncing audio TO video. This is specifically an audio device, not a video device. Whoops.

also the weird one in that list is the Nikon thing with the asterisk.
It turns out it's a 2.5gb magneto-optical drive that I think was only released in japan?

https://item.rakuten.co.jp/waysas/10015260/?scid=s_kwa_pla_unpaid_211514

And it turns out that CPU is a Pentium 133mhz, SY022.

So the motherboard is an ASUS TX97. That's based on an Intel 430TX chipset, and can run Pentiums throughs AMD-K6.
It supports up to 256mb of RAM in 168-pin SDRAM slots. 3 ISA slots, 3 PCI slots, and one combination PCI/MediaBus/ISA slot.
Built in IDE, can be powered by AT or ATX power supplies.

Also apparently the OS is stored on a Quantum Fireball IDE drive.

Then a Symbios SYM8600SP SCSI board. Seems to be pretty standard, this is probably just an off the shelf component.

Let's go through the boards.
The smallest one is this MMR Biphase Option (BOB), ASSY 70303.
Seems to have a bunch of RJ-?? plugs.

Then the 70384 DIO.
Digital I/O, I suspect.

Then the MMR UIB, ASSY 70302.
More FPGAs, ASICs, and EEPROMs.
They integrated the serial port from the motherboard into this card, it seems.

The first big custom board is this TimeLine Sync2 ASSY 70386.
A bunch of FPGA chips, custom ASICs, and EEPROMs.
It's 16-bit ISA, but it seems to talk to other boards through that big locking IDC connector on the top left, so that probably doesn't matter much.

And four of these IDT7132SA20J 2 kilobyte dual-ported static-ram chips. Probably for audio buffering/processing at super-low latency

It's got 4 of these CS8411-CS digital audio receivers, and then 4 of these CS8401-CS digital audio transmitters.

It's also got a Motorola DSP56002PV80, a 24-bit DSP.

Then the final board is a Timeline PRX ASSY 70383.
More SRAMs and lattice chips, and a PLX PCI9060 bus controller.
So I suspect that many-pins backplane they use to connect all the boards may be a second PCI bus.

Then another of the same board, but this one is missing the receiver/transmitter chips. It's just got the RAM and FPGA.

and it's got three 32mb SDRAMs.
So 96mb in total. That's a bunch for a Pentium 1!

The front panel is communicated with through this MMR FP/UIB Interface, Assy 70301.

It's just a bunch of caps and resistors?