jdmcs's latest activity
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jdmcs posted the thread Macintosh IIsi Oscillator-Replacement Overclock Successes and Fails in Macintosh II.Do you have a IIsi? Have you tried overclocking it by replacing the 40.0000MHz oscillator at G1 with a faster one? Then let's collect... -
jdmcs posted the thread Has Anyone Put a Color LCD Into an IBM 5155 Portable Personal Computer? in 8088 / 8086 / 80186.I've seen the LCD panel upgrade available for the Macintosh SE/30, and got a crazy idea: put an LCD panel into an IBM 5155 and connect...
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jdmcs replied to the thread Putting a 486dx in an Intel overdrive slot.The motherboard likely needs to have jumper settings changed for a DX2-66 processor to work. If you post a photo of the whole...
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jdmcs replied to the thread Can You Put a White Phosphor CRT into an IBM 5155 (Portable Personal PC)?.I'm glad I found an amber CRT for my 5155 by means of a parts 5155: while the white phosphor CRT should work, it would likely encounter...
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jdmcs replied to the thread Swap Meet Near Dulles, VA on August 24: Retro Bits and Bytes Swap Meet.It is a swap meet, so presumably you would be allowed to bring an iBook to “swap”… that’s my guess, at least, I only posted this event...
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jdmcs posted the thread Swap Meet Near Dulles, VA on August 24: Retro Bits and Bytes Swap Meet in Events & Meet-ups.On August 24, 2025, the Retro Bits and Bytes Indoors Swap Meet will be held at the Dulles South Recreation and Community Center from...
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jdmcs replied to the thread Documentation for DB15 to VGA adapters.I just found switch settings for the Belkin F3H1381... both versions. Hopefully this helps someone with this adapter, especially because...
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jdmcs replied to the thread LC II vs. 4MB SIMM Problem.I’ve been told that the 10MB limit is in the ASIC itself, which would mean that it would not be possible to overcome the limit with an...
