Adding Memory to VF0

billyghog · Aug 30, 2008

I am working with an older (97) Haas VF0 that is really limited on memory - there is only about 70kb available when all the programs are erased. I took off the back panel and found the memory chips - it looks as if I could just buy more chips and solder them into place (see attached picture). The RAM chips currently installed are "HY62256ALP-10" which are 32 kb each. Has anyone done this before? Haas wants a rediculous amount for a new board and the memory chips are cheap (~ $8 each). I'm not concerned about the soldering, I'm more concerned that other components won't be able to recognize the new memory and would need to be upgraded as well... Thanks!

serviceman · Sep 3, 2008

go for it you should be fine the machine will find the memory

DaOne · Feb 20, 2011

I know this is an old post but the question is the same. I have a 95 VF-2 with one meg of memory. My control uses KM681000BLP-7L memory chips for the static ram. I am planning to solder in sockets for the memory. Am I safe to assume the control will find the extra memory without error?

Twangcaster · Jun 21, 2011

Hey DaOne. Do you have any luck adding your own memory? I've wanted to try the same thing.

DaOne · Jun 23, 2011

Twangcaster said:
Hey DaOne. Do you have any luck adding your own memory? I've wanted to try the same thing.

Yes I upped my VF-2 to 1 meg. I started from 256k. Works great. I could go further but I need to figure out how to multiplex 4 banks. The "PAL" chip that would normally do this isn't on my board. I am sticking with the 1 meg right now as I have room for my custom quick code and macros and can still load a bigger file than I was able to before. Anything bigger gets DNCed.

geoffw · Sep 26, 2015

DaOne,

I tried upgrading from 256k to 1mb on my 95 Vf-0E by adding 6 128k SEC chips. The result was unsucessfull. The screen was a solid orange and it didn't boot.

We removed the chips and now have to re program all of the parameters.

Do you have any pictures of your board/chip setup?

Geoff

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