Apple II

Looking for good dump of the Apple II Rev. C SCSI Card PALs

Submitted by dankcomputing on April 30, 2021 - 7:35pm

I have here an Apple IIGS that I've been trying to fix up for a friend. The SCSI card is busted, it basically acts like it isn't even plugged in. I was able to borrow another (Rev. C) SCSI card, and that works with the existing hard drive setup.By exchanging parts between the good card and the bad card, I've been able to verify that the problem with the bad card is that it's PALs are defective. All other chips and the ROM are OK. The card works with PALs from a known-good card. The problem is, the working PALs are read-protected!

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Apple II

1980 Apple J-Plus Model A2S1016J restoration

Submitted by Boletus on April 29, 2021 - 9:26am

Hi!

I just published this video about an Apple J-Plus restoration:

https://www.youtube.com/watch?v=kfMbE0mthnQ

Not an easy task since there were a lot of faulty chips including ram.

 

I hope You'll enjoy it.

Thanks

Luca

 

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Apple II

Apple IIe Platinum Keyboard Keys

Submitted by appleiiapple on April 28, 2021 - 1:10pm

I had no idea that 2 years could be so different...

 

Left 1987, Right 1986...

 

Anyone selling 4 keys for the 1986 version?

 

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Apple II

Double sided disks, but... how? And how to make ADTPro bootable?

Submitted by Dan in Vermont on April 27, 2021 - 6:33pm

This might be a dumb question.  I bought some new in box 5.25" Verbatim DS/DD disks for my Apple IIe, and they work great, but I am trying to figure out how to utilize the back side of the disk.  Someone at my work told me that I had to notch out a hole like the small square hole on the side on the opposite side, so I have tried that out and it doesn't seem to change it.

 

If it makes a difference, I took both of the drives apart and cleaned them up on the inside and the heads and stuff, and they both work great.  They are both the "Unidisk" variety.

 

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Apple II

Apple II GS ADB port issues.

Submitted by ZangLucarson on April 26, 2021 - 6:55pm

Hi all,Recently, my IIGS started having issues with its ADB port.

It started after swapping my battery holder and battery, which could just be coincidence, as I'm having trouble remembering if the keyboard worked initially after that, and I left it alone for about a week afterwards.

I double checked the battery and realized that a solder pad was missing from the positive terminal on the motherboard, it must have fell out when removing the original battery holder and I just didn't notice somehow.

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Apple II

Disk utility to move drive head

Submitted by zeropage on April 25, 2021 - 1:52am

I'm attempting to record the sounds of a Drive 2 in operation, and I'm wondering if there's pre-existing software to move the drive heads on command. Ideally I just want to move the head from the first track to the last. 

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Apple II

Euro IIe PSU - Options/-12v?

Submitted by lilwashu on April 24, 2021 - 3:10pm

As detailed in another thread I have a euro IIe which had a RAM failure and also has a burned transformer in the PSU, so I need a new PSU. I like the look of the Reactive Micro one but the price is a bit high and the shipping to UK is almost the same again so that's out.

I've done some research and it looks like the IIe doesn't use the -12V rail at all unless a Unidisk is connected - is this true (I have a spare Mac LC II PSU that does +-5v and +12v and would be a great fit if so...)?

 

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Apple II

Mystery card with two 16-pin connectors

Submitted by jlandahl on April 21, 2021 - 12:21pm
This unlabeled board for an Apple II computer is one I'm curious about and haven’t been able to identify.  It has a 16-pin connector at the front and another at the back that I don’t understand the purpose of.  The only manufacturer marking I can find is the number “252” at the bottom edge.  Some of the chips have 1982 date codes.  I dimly recall picking it up for $5 at a computer store clearance sale decades ago because it reminded me of my Synetix 294KB SSD (solid state drive) card for the Apple II Plus.  That was because of its shape and the large number of chips, with
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Apple II

Success - Apple II+ clone lives

Submitted by Stargeezer on April 21, 2021 - 8:59am

Hi folks,

I just wanted to share my excitement and joy at the successful restoration of an Apple II+ clone.

It seems to be working well now.  Nothing really magical at the restoration.  Cleaned it up, retro-brighted the keys and pulled all ICs and de-oxed the sockets.

That last step seems to be a big help with video issues the machine originally had.

Cheers,

Mark

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Apple II

Some Apple 2e products

Submitted by Ratso222 on April 20, 2021 - 9:41pm

Anyone looking for ZIP chip, 5.25 controller card, RAMWORKS II 2 APPL. ENG. APPLE II 2 MEMORY CARD, Clock card?

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Apple II

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