modem7
10k Member
Updating BIOS ROM in an IBM 5150
Updating BIOS ROM in an IBM 5150
If you want to head down the route of using an adapter, see http://www.vintage-computer.com/vcforum/showthread.php?t=13399
Updating BIOS ROM in an IBM 5150
If you look at http://www.vintage-computer.com/vcforum/showthread.php?t=9692 you'll see that there were 3 versions. The first 2 versions (repeat, 2) don't support ROM BIOS extensions. If it turns out that you have either of the first two versions, then I am prepared to do a swap with one of my third version ROMs (original IBM ROM). An inconvenience is that I'm located in Australia. PM me if you are interested.3. I am soon to be in possession of a 5150 which I believe is one of the earlier BIOS versions. Is it possible to upgrade the bios in this machine (S/N 0197797) in order to use expansion cards with option ROMs?
If you want to head down the route of using an adapter, see http://www.vintage-computer.com/vcforum/showthread.php?t=13399