• Hello, Guest! Welcome back, and be sure to check out this post for more info about the recent service interruption and migration.

Error 42 with most FloppyEmu disk images on Lisa with 400K drive

elemenoh

Well-known member
I've been restoring a Lisa 2 / Mac XL and am having trouble getting it to boot any images on a FloppyEmu. All images except the Mac Works boot image result in error 42. Per the service manual, this indicates "Disk controller timeout".

  • I probed the entire disk controller circuit on the IO board and couldn't find any issues.
  • I checked the capacitor on the Lisa Lite card. It had low ESR and no signs of leakage.
  • The Mac Works image does boot (over about 5 minutes) but gets sac Mac when the system disk image is 'inserted'.
  • I have a known-bad RAM chip (Row E Col 19) that I've ordered a replacement for. Would that chunk of memory interfere with reading from disks?



Any other areas I should focus on?

 

mactjaap

Well-known member
I think I had the same problem. I resolved it a few years ago. Don’t know exactly how, but I have a large amount of files on my FloppyEmu SD card which work OK. 

Maybe we could exchange files? So I test yours and you test mine. If you want that please send me a PM. If we find out what’s does the trick we post it here. 

 

elemenoh

Well-known member
I realized tonight that there’s a specific Lisa mode for the FloppyEmu. Once I changed the mode it worked great!

 
Top