jmacz's latest activity
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jmacz replied to the thread How to: upgrade a 520/540 to a 550c ROM.Cool! So now we should be able to patch the ROM to remove the memory test. -
jmacz replied to the thread PowerBook 500 Series Powerbrick Replacment.I’ve got one I made and one original recapped. The recapped one was working fine for a while but then all of a sudden stopped working. I...
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jmacz replied to the thread Quadra 950 Various Crashes.Ah yeah, I'm seeing a steady ~5V coming from various points (connectors, psu, logic board, etc). I see the issue with additional 5V...
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jmacz replied to the thread Quadra 950 Various Crashes.What do you mean by tapped? The power for the ZuluSCSI is coming off the 5V accessory connector on the power supply and last time I...
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jmacz replied to the thread 48MB in a PowerBook 500 Series – an Illustrated Guide.Yeah, that seems difficult.
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jmacz replied to the thread 48MB in a PowerBook 500 Series – an Illustrated Guide.Yeah, was staring at my bench 540c and was thinking about how to save the floppy but with it in place, I don't think it will...
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jmacz replied to the thread 48MB in a PowerBook 500 Series – an Illustrated Guide.Been playing with this a bit... I have three different CPU cards all of which have had CPU transplants. Card 1 - Full 040 with FPU...
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jmacz replied to the thread Quadra 950 Various Crashes.Yeah, my ZuluSCSIs always are powered via the floppy/berg connector. Didn't help me :( I got a working spinning disk from @techstep so...
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jmacz replied to the thread jmacz journey.I used JB Plastic Weld to get the overall shape. Then after it cured, grinded it closer to shape with a dremel and then it was sanding...
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jmacz replied to the thread jmacz journey.Not going to try since it’s working great. :)
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jmacz replied to the thread jmacz journey.I'd need to get a oscillator. My other PB 540c with full 040 at 40MHz can keep running the MacBench pro tests and continues doing fine...
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jmacz replied to the thread jmacz journey.Haha... will get it. It died after two runs of MacBench 3.0 graphics tests. :) Looks like it's going back to stock speed.
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jmacz replied to the thread jmacz journey.Ran into a slight problem with the memory hack - the Viking card I have has a different layout. But it's working now. Overclock (40MHz)...
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jmacz replied to the thread 48MB in a PowerBook 500 Series – an Illustrated Guide.Viking card.. different layout. 1st and 3rd columns go together, and 2nd and 4th columns go together.
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jmacz replied to the thread jmacz journey.I had bought one of those smaller handheld rotary tools (Fanttek F2) and used the smallest grinding bit and just went super slow. After...
