Search results

If anyone is interested in a non working 7100 cache with its AV9170 shorted to ground, I’ll send it.

Thanks. So it looks like that on chip VDD is shorted to ground. I found another cache and it works fine.

How did it go?

I have a C2N Datasette that will not load tapes. I've looked at the schematics, have put an oscilloscope on the read heads, watched several repair videos/tuning instructions. I also have a working SD2IEC. Why do I care if the C2N Datasette works or not?

Just checking for grounds on the caps and IC's, the small IC in the center on the backside picture has pins 5 and 7 to ground....cannot find a data sheet on it though....the numbers are AV70-1 then 9508 on the IC itself...?anyone know what specifically I should search for to find a data sheet...

Here is the other side. The other chip I guess is the ROM, the machine will boot with the ROM in either slot if the pictured chip is absent.

Is this a picture of the 7100/80 L2 cache? If it is, is it worth replacing for computer function. I have a 7100/80 using the DB15 for video and if this chip is installed the computer will not boot but does boot when I remove it.

No; east TN; I maybe interested in one if you can just ship the board. I have areas of the battery bombed one soaking in WD40; wishful thinking multiple traces seem to be gone.

I have been looking for a Iici locally for several years and actually bought a "lot" of computers to get this one. Even when I heard something shaking around, it still never occurred to me.

Yes....great job. I've done a couple of IIsi and the daughterboard on the power supply slows me to a stop.

Yes...I've seen some dire warnings as far as using an external from a Macintosh on the IIgs, however the unidisk is OK....but not sure now that I've changed the cable.

Maybe helpful

I can confirm the cable on this drive can be replaced with this Apple Iic to Apple Disk II cable and it does work on a Macintosh SE.......this drive should work on both an Apple IIe and Apple IIgs, however, still haven't tried it as fairly paranoid about compatibility/damage particularly after...

Its a few decades late but pretty neat. Thanks to the 8-bit guy (ATTACK OF THE PETSCII ROBOTS) and Scott Robison (C128/dual monitor version. Yeah...it is a blast to play too.

Took the VIC apart....it looks like someone put some serious work into this VIC20.....almost every chip is socketed and apparent nonstandard ROM.

This is an external 3.5 inch drive, model number is consistent with 800K. The cable was cut off but it does work as I've tested it with the cable from a 400K external drive. I want to build a cable and have a 20 pin ribbon cable and have ordered a 19 pin male DB connector. Is this a straight...

Does this mean anything to anyone? It runs basic....maybe bios modified for the Claxton school's VIC 20's? Never considered the VIC 20 much of a school/educational machine.

Yes; nice update; took a while BUT using a HEADLESS PI ZERO complicated it. First flashed the image from the above GitHub sight to the SD card using "Raspberry Pi Imager" (use last option "use custom"). Used notepad on a windows machine to make an empty text file named "ssh" and placed in top...

That's pretty satisfying....nice work

Replaced two bad SID's one with a nano Swin and the other with BackSID (from Backbit) and both work well. The BackSID has support for paddles and mouse whereas the nano swin does not. If I had known the nano swin did not support the paddles and mouse, I would have gotten 2 BackSID's instead. I...