BBC Micro Computer Issue 3 Motherboard with 8271

I have run a test program (from Gotek FDD) and it reports IC4 and IC7 are faulty. I have tried swapping out both chips and it is IC7 the serial ULA which is faulty, IC4 is working. IC7 provides the serial interfaces for the RS-423 and cassette ports, everything else on the board is working as you can see from the photos.

I have tested it with with a User port SD card interface fitted and it loads and runs games.

I have run a test program (loaded from Gotek) to test the memory and other functions of the computer - all passed - see photos

If it is not in the included list it is not included

I will be happy to answer any questions and consider any offer

If you have any concerns after delivery please contact me before leaving feedback, always happy to resolve issues

Please see my feedback