Slight corrosion in the battery area yes, but the traces make contact. Already cleaned that with Isopropanol, same to the contacts of the PLCC CPU and the socket pins. Rest of the board looks good from visual inspection, no scratches not much dust etc. It was my first idea to test with DIPs too ( …

Thanks, Megatron - coincidentally those were the BIOSses I tried so far (at least 2hlm006 and one for BI-025C). :-) Maybe I should give the others a try too. Nonetheless, I was just wondering if the original BIOS of the board pictured above (which is visually exactly the same LM-103 REV2.1 [with …

Does anyone have the BIOS ROM images for this particular board at hand? I've got exactly the same board here with missing ROM chips and unfortunately I couldn't get any AMI BIOS for HT12/A working on it so far. Thx, Vasco