Apple II

Possessed ][+ Mainboard

Submitted by Timelord on February 14, 2021 - 7:13am

Here's an anecdote to take to the bank. I have a Rev D ][+ board that was previously damaged and malfunctioned. A while back, I restored it, tested it, did a full burn in, RAM tests, the lot, and it passed them all. I put it into a static bag and put it on a shelf. 

 

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5.25" drive works w/ADTPro but not GS/OS

Submitted by djc6 on February 13, 2021 - 4:46pm

I purchased a model A9M0107 5.25" drive off of eBay for my ROM03 IIGS. I've used ADTPro via serial to successfully write several disks, but GS/OS cannot read them. I'm using a box of Dysan 5.25" disks new old stock, shrink wrapped. Double sided, Double Density.

 

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Best Openings for Micro-Chess 2.0; what is its ELO?

Submitted by Timelord on February 13, 2021 - 3:51am

I have been experimenting with some modern openings with Micro-Chess 2.0, that tend to work very well with live play, but the software (from 1980) shocked me in finding creative logic branches to defeat or to blunt them.

 

I am curious if anyone has ever proven its ELO (per IQ setting) and what the best openings to use against its logic tree tend to be. 

 

As far as I am aware, and the manual supports this, the user can never play as black, so this rules out some options. 

 

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Possible Apple IIe spanish ROM.

Submitted by Ramirofv on February 12, 2021 - 8:28pm

Hi everybody!I recently bought an Apple IIe with the "keyboard switch" underneath, spanish keyboard and -I guess, help me if I'm not correct- SPANISH video and keyboard ROM's. They are labeled "341-0155 revB" for the keyboard and the video ROM is "341-0165 revB" and is mounted in a small daugther board called "AIIE LANGUAGE ADAPTER" (820-094-A).

I would love to contribute this ROM's to the community since -and then again, this is a guess since I'm not expert-, I can't find any mention of them on the web, so I'm under the idea that are unusual or at least rare.

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Hot DRAMs

Submitted by Mr.Fix on February 12, 2021 - 8:03pm

Hey all, i have a apple 2+.  I am having an issue with the onboard DRAM on the motherboard.  I have noticed that all DRAM banks are heating up.  I have checked voltage at PSU, and they are within voltage spec (+-5,+-12).   I have tested the DRAMS with APEX diagnostic software and the results are the DRAMs are good (no bad chips). I have taken out all the DRAMs from the motherboard and filled up first bank, and this entire bank is heating up.  Any ideas on what to check?

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2716 Char EPROMs

Submitted by Timelord on February 9, 2021 - 5:28am

I seem to recall that 2716 char EPROMS worked on some revisions of the ][/+ mainboards. Which revisions support that? I do not recall offhand what was changed in the char ROM pimnouts.

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apple IIc will not write to disk

Submitted by undone.evil on February 8, 2021 - 2:56am

hello

 

im new but iv lurked around on and off.

 

so i have had a apple iic for awhile and just recently got a serial cable to use ADTpro. the problem is that i get "I/O ERROR" i thought it was my disk drive being flaky so i got a new old one off ebay and it does not work either.

 

i have been going through the SAMS but there is a page missing with a basic program to test the drive. i would just buy the sams but i dont want to pay $20 if its just going to be the same as the free pdf with the missing page.

 

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Apple IIgs System Bad: 06070000

Submitted by MiguelChavarria on February 7, 2021 - 9:48pm

Good Evening,

I have an Apple IIgs that my father bought for me back in 1987. I set it all up and turned it on and the self test started. It ended up with a System Bad: 06070000 message. Would anyone happen to know what that means, what is going wrong and how to fix the issue so that my Apple IIgs is running normally again?  Thank you I appreciate the assistance.

 

R,

Miguel Chavarria

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