Search results

Just wanted to share a new board for the Macintosh Portable RAM Expansion. Uses the RAM slot. Configuration to include sequential RAM addition from 2, 4, 6 and 8 RAM. Mode select for Portable Model (M5120 or M5126 - backlit limited to 7 MB total). Drives DTACK on pin 7 of the PDS slot with...

Okay. I was getting excited and tried to internally power and LCD replacement off the J15 connector -- using 4 12 volt lines and 4 GND lines to power a barrel connector and a 12 volt LCD -- yep. Shouldn't have done this. The LCD did power on; but now my computer will not boot. NO smoke; no pop...

I'm currently in the process of developing RAM cards for my Portable. I have successfully created a 4MB and 8MB card and both work and boot. However, I am trying to understand the issues with slow access speeds when more than 5MB are in play (1MB on the board, 4 MB on the card). Initially I...

Anyone get AppleShare/Appletalk working with a 2MB Macintosh Portable. I have only 2 MB and I'm running System 7.0.1. I tried to get System 6.0.8 but I can't get this to work...get System Errors frequently... I have tried both BlueScsi and ZuluScsi. I have set the "MacPlus" setting in the...

Working on various parts of my Macintosh Portable as I await RAM to replace on my board..... This is the M5136 (CR-76U) from my non back lit version. Is this salvageable? Should I just Dremel the lower part off and re-tin it....

Just wondering if this is what I should expect on the 5V line. I'm new to occiloscope probing and need some guidance as to interpretation... I have a new to me Mac Portable that I'm trying to troubleshoot. I've replaced the caps but have the original hybrid module. There is some evidence of cap...

I recently installed a ROMINATOR I on my Mac Plus. Everything is working well but on boot the chime ends abruptly with a click sound at the end. Stock ROM chime was fine. Other sound fine. ROM seems well seated. Is this expected?