Greg Andrzejewski wrote:
Hi,
My recently acquired Apple IIc seems to have serious hardware problems.
Does anyone have a IIc main board available? I know there were different
IIc's, mine has an internal 5.25" drive. The machine will start (but not
end) a self-test. Thanks.
The self test in the original IIc ROM does exactly what you describe. Later versions of the ROM have a self test program which was actually finished :-). Memory location $FBBF has the ROM revision. If PRINT PEEK(64447) returns 255 then you have the original ROM.
255=original ROM 0=support for SmartPort drives e.g. UniDisk 3.5 3=memory expansion card 4=revised memory expansion card -- Roger Johnstone, Invercargill, New Zealand Apple II - FutureCop:LAPD - iMac Game Wizard http://homepages.ihug.co.nz/~rojaws/ ________________________________________________________________________ Real programmers don't document. If it was hard to write, it should be hard to understand.