Apple II

AE Viewmaster 80 System Crashes

Submitted by Timelord on May 26, 2020 - 8:37am

I recently received a Viewmaster 80 (AE) card, and when I insert it into a slot, the system refuses to boot, and gives a repeating click from the speaker. Have any of you see that before? I am tempted to swap the PROMs, but I'm not sure if that is where the problem exists. 

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Apple II

Language Card, Screen Filled with '?'

Submitted by Timelord on May 23, 2020 - 6:59am

One of my Apple Language Cards causes the following to occur:

 

The screen filles with the symbol '?' and the system locks up.

 

I have never seen this before, and I'm unsure what would cause it. Have any of you see that happen?

 

I suppose it could be a faulty 4116, but IIRC, I pulled the RAM and it still happened, and the Apple language card should work with the RAM removed. 

 

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Apple II

General Questions [about the Apple IIe]

Submitted by diychris on May 22, 2020 - 10:28am

So I purchased an Apple IIe yesterday. It wasn't working, had horizontal bars across the screen. After much troubleshooting, replacing the 6502 did the trick.

I had an old Rockwell 65c02 lying around so that's what I put in. I'm not sure if that's going to cause any issues at all? I believe there are some differences between the 6502 and 65c02 but I don't know how those would relate to any issues with the Apple IIe.

 

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Apple II

ASCOMP

Submitted by BillO on May 21, 2020 - 1:49pm

Hi All.

 

ASCOMP seems to be a bit hard to find on-line.  User mutant_pie had once sent me a diskette with ASCOMP on it (about 4 years ago).  So, me, having an incredible sense of urgency, have finally gotten around to making an image of it.  Find it attached. 

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Apple II

eBay Sharks: Beware new eBay freight costs!

Submitted by Timelord on May 21, 2020 - 4:11am

Here is a good example of a pure eBay shark:

 

https://www.ebay.com/itm/Apple-IIGS-A2S6000-Computer-with-Keyboard-and-Mouse/383289451692?hash=item593dd4e4ac:g:h7kAAOSwndFd3rPg&autorefresh=true

 

He is asking USD$150+ for a //gs, and he put a US$INSANE freight cost on it. Even in the states, this is US$600, in a horrible condition, 'as-is, for parts'.

 

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Apple II

Strange CRT effect

Submitted by Steven Carpenter on May 20, 2020 - 7:17pm

Hi everyone,

 

I just picked up a broken Apple IIe on craigslist. I am working on replacing the motherboard video rom chip and CPU but that is not what this post is about. I got a monitor with the computer, Taxam company. I tested the monitor with my IIGS. The monitor works but there are slow moving areas of horizontally compressed display that start from the bottom of the screen, slowly move to the top, then restart at the bottom. Only one compressed area exists at a time.

What can I do to fix this? I have included a picture below:

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Apple II

Vertical Line of "Dead Pixels"

Submitted by Matombo on May 19, 2020 - 5:10pm

I need some advice on an  issue of an apple II europlus

It has a vertical row of dead pixels on the screen (see picture).

It happens regardless of which screen i use (i have  old monocrome monitors here and my current tv also still has a component in)

And the screen in the picture works fine when i connect it to my dads ITT Apple II

So it has something to do with the device itself. Any guess what causes an apple II output to be almost good?

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Apple II

ADB Keyboard Double-Letters/Symbols Issue

Submitted by Timelord on May 19, 2020 - 8:49am

I recently had to do manual repairs to a bad 4-pin DIN connection on an ADB keyboard (658-4081), where the connector was so badly damaged that the pads were ripped due to stress--this is how I received it. The keyboard now works, but some of the keys produce doubled symbols. 

 

Unlike other Apple II keyboards, the serial data all flows down one pin, and I am not sure what on the keyboard PCB could be damaged in such a way to cause this to occur. The only thing that I did, was to add some bodges to manually bridge the left-side ADB DIN port to where its traces normally lead.

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Apple II

SMD ROM Replacement for Apple ][, ][ plus, ][ europlus

Submitted by DeanClaxton on May 18, 2020 - 10:38pm

Hi all,I built an SMD Apple ROM replacement board for Apple ][, ][ plus and ][ europlus.NOTE : This is not a new design - well I've substituted in the 39SF010A flash chip (most use a 27c256 eprom), but the overall concept has been around a while. This is the first SMD one I've seen though, and certainly the most compact!This board replaces all 6 ROMs on the motherboard - you can leave most of the original ones in the sockets as it will overide them - install the board by removing the D0 ROM plus the 74LS138 to the right of it (position F12), then plug this board into the vacated sockets.

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Apple II

Who to Contact at Asimov.net

Submitted by Timelord on May 15, 2020 - 5:05am

I recently added some files to asimov.net, and one of them did not xfer proprtly. It is now a duplicate of what has been approved.

 

Who do I contact to remove that image (it is 90% missing data)?

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Apple II

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