I recently picked up a IIe and a IIgs (plus, incidentally, the whole II/IIgs disk library from LOGIC, a local Apple user group that shut down recently). While I've got the IIgs working nicely with ADTPro, the IIe + DuoDisk is not so happy.
- makes all the right beeps, ‘Apple //e’ display and floppy noises immediately after powering on
- Ctrl-Break gets into Applesoft BASIC as expected
- Booting a DOS 3.3 master fails, dropping back to the Monitor with messages like “1BC1- A=B9 X=0 Y=F1 P=B5 S=FB”
- Trying ProDOS fails similarly, dropping out with “PP«newline»0002- A=D0 X=0 Y=02 P=37 S=F1”
- ADTPro's serial bootstrapper fails with similar messages, but with some screen corruption
- If I do manage to get ADTPro loaded, it doesn't recognize any floppy disks being in the drive.
- The one game disk I managed to load ran with some screen noise.
The same DuoDisk worked okay with the IIgs, and a working UniDisk I have fared similarly badly on the IIe.
I know next next to nothing about Apple IIs: never used one before last week. The screen corruption made me think that it might be chips coming unseated, but everything I could see was in place.
I do have a spare Extended 80-column card and could swap that in, but is there any other obvious issue I should look for? Could it be a disk controller card problem?