Apple II

I got an Apple IIc but it didn't boot. Both the drive led and power led blink when the computer turns on. There is no video output and no activity on the disk drive. It seemed to be a power supply issue, so I measured the VCC of a couple of 74LS374 and found that the voltage is close to zero and flutuating. I then checked the internal power converter and found that its D7 diode is bad: the resistence between its two pins is small in both ways.

Does anyone have the little housing/box that for the DB25 to a Super Serial Card installed in a ][+?

Hello,

I built an SPIISD device (version 1 without a display, the model with an IDC20 cable, Arduino Nano) for my Apple IIc (ROM 4X with a French keyboard).

I flashed the software onto the Nano using a Pololu AVR programmer. When I start the Apple, I get the message "No bootable device."

The software on the Nano starts properly, Welcome messages are visible in the log.

The connections between the DB19 connector (original) and the Nano are fine, as are those between the Nano and the SD card reader. I checked all the connections.

Back in November, I picked up a Bambu P2S printer.  Since then I've been slowly learning CAD (in Fusion, mainly).  And I made a couple simple parts that I don't believe I have seen published before.  So, I thought iI would share them with everyone.

First is the middle foot on the bottom of the IIgs monitor.  I have a couple monitors and they were all missing these except for one still barely hanging on.  So, I reproduced this and printed it in TPU for a slightly rubber-ish feel: