jmacz's latest activity
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jmacz replied to the thread Quadra 950 Various Crashes.My previous note that it happens on both internal and external might have been incorrect. I think I may have seen it on the external... -
jmacz replied to the thread Quadra 950 Various Crashes.Ok bummer... it came back.. harder to reproduce now but still there. I have stopped overclocking but doesn't matter. Saw a new symptom...
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jmacz replied to the thread jmacz journey.I don't want to jinx myself... but going on about 2 days with lots of attempts to reproduce the strange crashes during boot on my Quadra...
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jmacz replied to the thread Quadra 950 Various Crashes.Still cannot reproduce the issue. Should have been able to normally by now. Keeping my fingers crossed. Unfortunately, I deviated from...
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jmacz replied to the thread Quadra 950 Various Crashes.I went through and replaced all the underrated stock tantalums on the logic board. I determined this based on @Bolle's Q950 schematic...
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jmacz replied to the thread Skipping the Startup Memory Test.I had posted a while back the ROM patches and the patched ROM for skipping the memory check for an SE/30 here...
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jmacz replied to the thread Macintosh IIci ROM Modifications.👍
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jmacz replied to the thread Macintosh IIci ROM Modifications.Yup!
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jmacz replied to the thread Macintosh IIci ROM Modifications.Glad it worked. The memory test happens during the blank before the first gray screen appears. The delay after the gray screen is...
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jmacz replied to the thread Macintosh IIci ROM Modifications.(deleted) -- had a note here that the patch might not work because I missed a register restore but realized I was looking at the wrong...
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jmacz replied to the thread Macintosh IIfx ROM Modifications.Yeah, I opted to leave the checksum as I was told certain things attempt to look at the checksum to make decisions (machine...
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jmacz replied to the thread Macintosh IIci ROM Modifications.@ViperLord try one more thing. I'm not 100% positive I got these offsets right... but try patching these two locations instead (ie. only...
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jmacz replied to the thread Macintosh IIci ROM Modifications.I think you're right. Without writing to all the memory locations once, the parity bits would be wrong. The parity bit is read/written...
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jmacz replied to the thread Macintosh IIci ROM Modifications.The two patched routines just perform a memory check (one in ascending direction and one in descending direction). The patch just...
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jmacz replied to the thread Macintosh IIci ROM Modifications.@frontein1 is probably right. I've confirmed the patches are working fine on my IIci but I also do not have a parity model. Skipping the...
