I just picked up a TI and PEB. While the console appears to work great, I haven't been able to get any of the expansion boards to work.
The PEB includes:
Flex cable interface
32x8 memory expansion
Disk controller, with dual floppy drives (QUME 142)
When powering the PEB on, both floppies' spindles turn for a few seconds. Trying to access either floppy drive as described in the manual results in a brief flash of the disk controller's LED, but no activity on the floppy light, and a disk error 00.
Using the SIZE command only results in 13928 bytes free.
I imagine there is an easy way to do a loop-back test on the serial port, I just haven't found any instructions yet.
I'm wondering if these are common symptoms for a PEB that's been out of commission for a while, and what I should try next?