Not in the c.1981 Paintbox. There was a Transputer in one of the warp boards in the Henry/Editbox. The QIFDC for Editbox had a 386SX PC stuck on top of a 3.5" FDD. (I helped build that)
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Would be fun to try and recover the images, we would need a working emulator and some way to connect it to the real world disk drive though! Could be somewhat challenging!!
1/ We don't, though. We know that it's MFM written with an 8MHz bit clock, 500kHz servo clock. We know that a track begins with MFM zeroes followed by either 0x91 0x25 in MFM or 0x53 after de-MFMing.
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2/ We also know that a track ends with that same value after de-MFMing. We also live in a day and age with cheap 32-bit microcontrollers that have USB interfaces, and can run C code, and with performance that blows a Disk Sequencer Card with an Am2910 out of the water.
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Realistically what it needs is someone with both the necessary drive to sling the cartridge into, and both the hardware and software smarts to whip up a microcontroller-based solution to just step from cylinder to cylinder and head to head, dumping out the bistream.
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