Fred Cisin via cctalk: (...') > Got an IBM "Advanced Diagnostics" floppy to try?
If you want to do a ll-format, you only need debug: A>DEBUG - -I 322 # reads dip-switches (don't think this is needed) -I 321 # read status -O 322 0 # select the controller -I 321 # read status -O 320 04 # ll-format instruction -O 320 00 # 00 for drive C, 20 for drive D -O 320 00 -O 320 00 -O 320 05 -O 320 07 the six "O 320" issue the "low-level format" instruction directly to the controller. Bit 5 in 2nd byte represents the drive. Do not expect any feedback, this is not a program, this is a direct communication with the controller via in/out instructions. The ll-format process is done in the controller's firmware and the Xebec-controllers are very slow. -- Martin Peters mar...@shackspace.de