You've either:

- lost a couple of databus buffer drivers which are are affecting the return ID of the USB chip and preventing the driver from initialising the chip or reading responses
- you have a dead/dying USB chip.

I would go for the second one as the previous line in the log shows that the CS4231A (which is on the same databus lines) is initialising properly - hence, it looks like the USB chip.

Have you recently unplugged/replugged either the display cable or the IDE cable, and made a mistake putting them back on?
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One of the few remaining Mk1 owners... #00015