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Hi, I'm trying to use https://github.com/guruthree/mac-se-video-converter to output VGA video from my Mac Plus via a Pi Pico. Things I've tried to fix this issue: Tried a Pi Zero and a Pi Zero W Tried two different VGA screens - both the same, one is a really good multi sync Eizo L367 Tried a...

Hi, can anyone help me find the driver for Envisio RAM & external monitor card for the Powerbook 100 please? I've tried the Envisio driver that's on Macintosh Garden, but that's for the 030 card that goes in the 140/170 Powerbooks. I think I need EVE V1.0.7 driver.

Hi, I could do with some expert advice on a Powerbook 100 I have. About a year ago I recapped the screen panel and partially recapped the mainboard in my Powerbook 100 and got it working. I didn't clean the whole board, just around the caps with IPA and cotton buds. Around 6 months ago I...

Hi, I have a 512K Mac with an odd floppy drive related problem. I've narrowed it down to the mainboard by swapping parts around between another perfect 512K system. The floppy drive will read, but it won't write. If I use a Floppy Emu instead, same issue with a floppy image file I boot from. If...

I originally posed this question a little over 12 months ago https://tinkerdifferent.com/threads/help-needed-with-dead-mac-512k-board.499/#post-2954 and received many helpful replies. I've recently got around to removing the 18 DRAM chips and socketing them. When I chip-tested the 41256 DRAMs...

Hi, I've attached a picture of my 512K Mac and the pattern on the screen at start-up. Until yesterday it worked more or less perfectly but would hang sometimes and exhibited issues associated with under-volting. I'd fitted a Rominator to it and it ran fine from that. Following Larry Pina's PDF...