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repetto74

4464 ram chips for ATARI 600 XL MOD :-)

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Hello guys,

 

I would like to perform the 64k mod on my ATARI 600XL and for this I am looking for a couple of 4464 DIL18 Ram chips or equivalent. Does anyone knows where to buy this for a decent price? If someone has some to sell I can pay chips + postage with Paypal. :-)

 

Many thanks in advance

 

Rick

 

PS : found a vendor in UK who is selling 41464 ram chips and stating those are equivalent to the 4464 series.

 

 

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I seem to remember that this can be converted to a 128K mod by stacking the chips. (?)

 

Anyone else remember that or have a link -- or maybe I dreamed that up...

 

-Larry

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Stacking chips and running wires is ugly. Get a U1M and put in.

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Agreed, but was there a mod that did 128K?

 

Actually, I'd use Antonia for several reasons, but clearly there are some better options than stacking.

 

Larry

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Stacking chips and running wires is ugly. Get a U1M and put in.

 

That's true but you still gotta upgrade that 600XL to 64K first, right?

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That's true but you still gotta upgrade that 600XL to 64K first, right?

U1MB requires 600xl to be at 64k. Antonia 4mb works with a stock 600xl 16k.

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To take it a bit further, if you use Antonia + Bryan's superb and relatively inexpensive video adapter, you get a killer 600XL with very little effort. And unlike U1MB (for me and some others), Antonia is not picky about the computer it goes in -- and no video issues, either, that I've seen. Lot's of folks still prefer U1MB, but for me Antonia has more advantages. (And I do have both.)

 

-Larry

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Ok Guys,

 

I did the 64k mod with the 41464 and they just work like a charm! :-)

I was scared as it is ages I did not take a soldering iron in my hand but I managed to dit a decent job. I still need to insulate wirings I just tested it on the fly and the SELFTEST will give 48k of Ram so I am good to go. It is not very nice to the eye yes I agree but who cares :-). I am fine with a 64k I do not think I will need more to run most of the programs released during the machine lifespan but I am fairly interested to know more about those extra ram expansion. Any docs?

 

 

Cheers,

Rick

 

PS : Sorry for the picture size, it is very large I forgot to resize it. At least you can see in detail how shity I am in soldering :grin: :grin:

 

 

EDIT : Ok I have seen this U1MB board, looks expensive anyway. I do not see for me at least the reason to upgrade an old 8bit computer with MB's of memory.

post-37196-0-52097100-1486830955_thumb.jpg

Edited by repetto74

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Those are big heavy ugly wires, and pink one looks in the picture as if it's not connected.

I like 30 ga. wrapping wire.

 

Keep the wires as short and straight as possible and use a little dab of hot glue or silicone here and there to keep them in place.

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I don't recall the docs that Larry is talking about, only upgrade I know of for the 600XL

is to the full 64K. And if I ever went down that road I would be re-wiring the system

to become more 800XL like in it's address multiplexing so that additional memory

add ons might work better.

 

At any rate, general texts on how to do is here

http://ftp.pigwa.net/stuff/collections/atari_forever/Extension/Memory%20Upgrade/

 

And schematics only are here

http://ftp.pigwa.net/stuff/collections/atari_forever/Extension/Ram%20Extensions/

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Hi Kyle 22

 

Yes I did the mod with what was available but need to reassess a little bit a couple of soldering joint which do not look very solid + insulation and silicon paste to stick wires on the MB. Anyway most important is that it is working and happy with that! :-D

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Yeah, my first Incognito install wasn't too pretty but it worked. I made it look better after I knew it worked.

:)

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