modem7
10k Member
Tried different slots?Ok I spoke too soon. Forgot to try the LPT. To my amazement I can see RDR stepping through it's phases, but no video! I thought maybe something changed with the bench setup, but when I try a working board with the same monitor & MDA card I get video.
Per [here], if RDR gets as far as looking for an MDA/CGA card, then has a problem seeing/testing the MDA/CGA card, the code/checkpoint of either 8A or 8D will be the last code/checkpoint shown on the parallel/LPT monitoring device.