Apple II

Dumping Vulcan GALs...HELP!

Submitted by nama_chari on May 8, 2022 - 1:16am

HELP!!!I'm really hoping for help from someone with a Vulcan card.After some testing my newly acquired Vulcan card seems to have one of the GAL/PAL chips with an internal short.I have had a good look and can't find anyone who had dumped the contents of these chips unfortunately.Is there someone here with a Vulcan card who would be willing to dump, or get their card into the hands of a friend who can dump the contents of these GAL16V8A chips. It would be of great help to me, and a great service for the community too :-) Philip(waiting patiently with fingers crossed)

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Astec GS Y type Safety Cap

Submitted by mochatea396 on May 7, 2022 - 11:26pm

Could someone send me a link of where I can find the "Y" type .01uf 250V safety cap on the GS Astec 13581 power supply? I can't seem to find anything anywhere.

Thanks

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IIgs ROM3 GSOS corruption

Submitted by AppleTree on May 3, 2022 - 9:23am

Hi I finally set up the IIgs Rom3 machine that I bought a while ago. I've replaced the PSU with ReactiveMicro's one.

I installed CFFA3000, UthernetII and 8MB memory card and installed fresh copy of GSOS 6.0.4. But soon I noticed that I would see corruption, in the form of garbage in window icon view (attached screenshot) and icons and file type going missing in list view (or even displaying some corrupt characters in list view - not in the attached photo though).

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IIgs Diag Failing a Working Mouse

Submitted by nick3092 on May 1, 2022 - 8:32pm

I was working on repairing a CRT for my IIgs today, and was using the video patterns on the diagnostic disk. Once I was satisfied with the monitor, I figured why not run the whole suite of tests for grins.

Everything passed, except the ADB mouse test. It just says it failed and to refer to the service procedures. Except if I boot up GSOS, the mouse works perfectly fine. The keyboard passes it's test no problem.

Does anyone by chance know what exactly it's trying to test? And more importantly, why it's failing a mouse that is infact working?

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IIc ROM Upgrade - why not?

Submitted by desertrout on May 1, 2022 - 7:02pm

Curious to hear folks' opinions on why to stick with ROM 255... the only reason I can think of is 'originality'... but I'm loving the functionality that the 4X gives. So conflicted...

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Apple II Rev 0 clone build

Submitted by DDE on May 1, 2022 - 4:21pm

For those interrested, the youtuber ShadowTron Blog has begun a series on assembling a clone Apple II Rev 0.

So far part 1 & 2 are posted.

https://www.youtube.com/watch?v=gvNmt3HUwrc

-DDE

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Mitac AD-1 (Disk II clone)

Submitted by Lee_Adamson on April 30, 2022 - 11:28am

I assume this thing isn't rare and valuable or anything? I plan to use the enclosure with the Disk II Floppy Emu faceplate kit, but I figured I ought to ask around before I gut it.

It uses a Sugart 390 mechanism. Slightly different than what is in my real Disk IIs, but looks to be electrically the same. Analog board appears to be a clone of the Apple one. Case has different vent slot placement, but otherwise appears identical to Disk II.

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