Found 4464 RAM Chips - C64c

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TheCorfiot

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Hello my good friends...

Would anyone have a few spare known working 4464 RAM chips, these are commonly used in the later C64c.

The RAM chips are 64Kx4 therefore in a 64K machine you would find 2 of these beauties.

Many Thanks
TC :)
 
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Station240

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Bit of a trap for people out there, two different types of 4464 exist.

The first is the 18 pin 4x64k 4464
The second is the 24 pin 8kx8 4464c (early video ram I think)
I've personally seen both.

What you want is the first one, it takes two to form an 8 bit bus worth of 64KB. Not sure why some C64 sites I search think its 32x8 though.

If you can't find any, let me know, I just bought some off the other bay about 10 minutes ago.
 

TheCorfiot

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Co-Incidentally...

2 of these chips will also allow you to upgrade the C128's 80 Column VDG's VRAM from 16K to 64K, simply swap out the 2 4416 chips present and there are no jumpers to change either.

4 ----------- Code for RAM type. 4=DRAM
4 ----------- Bus Width. 1=1bit wide, 4=4bit wide
64 ---------- Capacity. 16=16K, 64=64K

TC ;)
 

xc8

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PM your postal address mate, I have 4 (M5M4464P 15ns) of them salvaged from my dead ZX +3.
I am not sure if they are working, but I bet they are, as the problem was mainly a f* up ULA..... no charge for you - even for the p&p....

Chris
 

TheCorfiot

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Chris that is most kind of you & would love to take you up on the offer


They will be used to upgrade a 16K CoCoII to 64K :D

Of course piccies and a guide will follow.

Many thanks again Chris, sending PM

TC (y)
 

xc8

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you are welcome!!

I would suggest to solder IC sockets on the board, so you if any of the RAM chips is not working you don't have to desolder/resolder again.

Chris

PS... YEAH!! we want hardware pr0n pics!!
 

TheCorfiot

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Many Thanks to you my friend indeed :bowdown:

Of course there will be loads of piccies :nod:


Regards
TC :)

PS --- I am from Corfu-Greece (Corfiot) ;)
 

TheCorfiot

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DRAMS arrived today

Many thanks my friend (y)
I have left some feedback for you.

Closing thread now

TC :)
 
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