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IIci hangs at boot. Ideas where to start?
Posted by: bear on 2013-06-11 21:31:50 Esteemed folks; I recently acquired a IIci in a load of other Apple gear. It had been a developer's primary desktop for many years before it was shut off and stored. When I powered it up, it came up to a straight grey screen (well, after I replaced the battery, anyway). No chimes, but a recap job fixed that. Otherwise, it still behaves the same way as it did before. So, it chimes, waits a few moments, then comes to the grey screen and does nothing else. The mouse pointer doesn't show up, no flashing question mark, nothing. It doesn't seem to be the SIMMs, as I have been testing with a known good set. I have unplugged all the nubus cards and removed the SCSI and floppy drives, so none of those things ought to be the culprit. I can sad mac it with the interrupt switch. One interesting item which may or may not be relevant, is that if I remove all the SIMMs, I get a normal chime followed immediately by the crash chime (as would be expected). But the beginning of the crash chime is garbled (abnormal). The last part of the crash chime sounds normal. If I hit the NMI switch, I get the normal sad mac with a code telling me I hit the NMI switch. But the crash chime here sounds normal, both the beginning and the end, as well as everything in the middle. So perhaps this is a red herring, or perhaps it's a smoking gun. I put it to you. Before I start probing every trace and via, one at a time... any immediate thoughts on areas to check first? Thanks!
Posted by: volvo242gt on 2013-06-12 02:53:38 The jumper for the ROM SIMM slot is installed, right? At the moment, that's all I can think of that'd be causing your issue, unless there's a bad chip or other issue on the board. I may have to pop my spare IIci board in and see if it's fully functional. If it is, you're welcome to it. I'm in Duvall, so about 45 minutes away from downtown Seattle. -J
Posted by: mcdermd on 2013-06-12 09:43:09 How much RAM is installed? Those things will take a couple of minutes to check 128MB.
Posted by: James1095 on 2013-06-12 12:00:42 The garbled startup chime suggests a problem with the ROM. You might try installing a ROM SIMM, enabling it with the jumper that was mentioned.
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