The Atari 1090 AMY Expansion Card

philipj · November 21, 2019

Now that the AMY chip has been found, is there any chance of putting the old sound chip to the test...? You might can use the sound card as inspiration for a cartridge release for the Atari 8bit computers or better yet, the Atari ST.

dino5050 · May 24, 2020

On 6/7/2019 at 11:49 AM, mytek said:

I ran the 1090 AMY Card scan Curt provided through two online converters to render a somewhat cleaner and size reduced version in a pdf format.

1090_AMY_Card17APR84.pdf 9.41 MB · 127 downloads

The tools I used were...

IMGonline (clean-up image)

png2pdf (convert png to pdf)

PDF Online Converter can also convert png to pdf

sup8pdct · August 6, 2022

Here is my effort to clean up this image. been working on it since the 1st post, off and on (mostly off ?)

There are bits that i cannot make out so there left untouched.

_The Doctor__ · February 4, 2023

@kenames and 1090 crew ^^^

reifsnyderb · February 4, 2023

1 hour ago, _The Doctor__ said:

@kenames and 1090 crew ^^^

Still leaves lots of questions in that blueprint. The PAL might be able to be accurately guessed at. The AMY chip is a mystery.

kenames99 · February 4, 2023

2 hours ago, _The Doctor__ said:

@kenames and 1090 crew ^^^

well, that is only half of it, a bunch is missing (analog portion). also missing the 8051 code. the PAL should not be too hard to figure out. AMY spec does tell what it actually does but not how. kind of a dead end without more info.

Ken

_The Doctor__ · February 4, 2023

Not sure how much is left, as the repository of much this is offline, we did have bit of it on AA, not sure how much of it was on the site before it came down, their were a few parts still walled off to the public on Curts site. I you knew the url you could go there if you didn't you wouldn't find it. I sure hope all of it is safe and will return.

kenames99 · February 4, 2023

I did mirror the site and also had archive.org crawl it too shortly (a couple days) before it went away. there is still some stuff I have not gone through. wish I had schematics for that 7800 addon that Curt did. I did not get any info about it when I mirrored his site. *heavy sigh*

_The Doctor__ · February 4, 2023

Exactly, if the site doesn't have a link to follow or a file in a directory/page that is called by the public pages, it doesn't get archived... the crawl misses so da*mn much. Supposedly the site is safe but if the fellow didn't grab all of it but did the normal crawl like so many others... it won't be there anymore. If he did it complete then we are golden once it goes live again, I can't figure out what the hold up is with that though.