abruno17
Experienced Member
I successfully converted my Model 4 to accept 360k floppy drives. But my original plan to use the floppy drives from a Model 4D parts machine didn't go well. The drives were ceased so luckily, I had some backup model T-100-2A Tandon full height drives from an old IBM computer. After many hours of fighting with the computer I got the TRS 80 to boot from the top drive. The problem was that no matter how many times I tried to get LDOS to read the second drive to load games nothing! The drive would even bother to access the second drive. I would only access the top drive. No matter how many times I typed in DIR:1 it would access the first drive! The computer thinks that there is only one drive so DIR: 0 and DIR: 1 net the same results! I know the second drive was getting power because I could see the motor moving. I don't know what to do with these Tandon T-100-2A drives. There are no jumpers. And I know there is a chip that is supposed to tell the second drive it's the b drive but that seemed to confuse the computer and it wouldn't boot from disc whatsoever! Then after some twiddling I finally got it to boot but it still won't access the second drive! What am I doing wrong?