Apple II

different mainboard versions of the IIGS

Submitted by speedyG on December 15, 2016 - 8:11am

after inquiry i added pictures to display differences between different mainboard versions of the IIGS:
http://www.appleii-box.de/H111GSmainboardVersions.htm

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Apple II

is it possible to do color text and udg's in apple 2 basic?

Submitted by the777 on December 15, 2016 - 7:42am

hi,

is it possible to do color text and udg's in apple 2 basic? i.e text in high res graphics mode, etc

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Apple II

Main board Identification

Submitted by mechanicjay on December 14, 2016 - 10:55pm

Hello,

I just got this depopulated mainboard in a lot I picked up. It has no names or numbers on it. The spacing and stuff looks like an Apple II style board to me. Any ideas?

IMAGE(http://archives.smbfc.net/uploads/retrocomputing/appleii/re_20161213_214821.jpg)

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Apple II

Trouble booting

Submitted by jpxl8ed on December 14, 2016 - 2:37am

I recently picked up an Apple II plus, which the original owner told me was working the last time he had used it (many years ago). When I turn it on it looks like it is trying to display the apple banner but most of the characters are missing, the computer doesn't beep on boot either. I tried reseating most of the chips and removing any extra cards which didn't seem to make a difference. I'm not sure if there is a bad ROM or something, but was hoping to get some ideas of what I could try next. I attached a picture of what it looks like when I turn it on. Thanks I appreciate any help.

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Apple II

Apple II+ - Don't store that Apple in the garage (Fixed)

Submitted by blegate on December 13, 2016 - 10:50pm

I've had this since 1982-83. It's not booting. Following advice I got a chip puller and started to re-seat the ram. To my surprise I find a spider nest? In addition, I took a close up of one of the RAM chips and you can see the years of neglect.
Not sure if I can revive this but I'm going to try. When booting I hear the beep and I get what you see in the picture on the screen. Any advice would be helpful.

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Apple II

Should I get a (repro) enhancement kit for my IIe?

Submitted by ColtComanche on December 12, 2016 - 7:26pm

I have an early one and I've been reading about the benefits of an Enhanced chip set.

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Apple II

Apple II Single Stepper

Submitted by wishtoknow on December 11, 2016 - 8:25pm

Apparently this was used in test engineering.
In Ireland.
The single stepper was used in the rework area -
failed motherboard would be examined by the
technicians using the single stepper and
could determine the fault. (RAM, shorts, opens)

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Apple II

Apple II Rev 3 motherboard - Clone, prototype or what?

Submitted by snuci on December 9, 2016 - 9:37am

I acquired two interesting Apple II Rev 3 motherboards. One is a board that was thought to be a clone but I wanted to explore if it was actually a prototype. As with the Apple II Rev 0 prototype, one of the Rev 3 motherboards has no solder mask or graphics.

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Apple II

Apple IIc internal disk drive

Submitted by 6502enhanced on December 9, 2016 - 2:42am

Hi,

I just purchased a Apple IIc.

Everything seems to work well.

I tried the Apex II Apple II diagnostic from Asimov. Every test was successful - but the Disk PROM controller test was not.

I tried about 25 different disks and all are booting and working without problems.

So the question:

Is the Apex II test not able to test an Apple IIc internal disk drive? Which differences are between the Apple IIc internal disk drive and the Disk II?

Thanks!

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Apple II

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