Memory expansion 256kb for Panasonic fs-a1wx

By Oldskool

Rookie (24)

Аватар пользователя Oldskool

08-02-2013, 20:13

Dear Forum,

Sorry for the beginner question.
just bought a WX computer. It is a nice computer but it only has 64kb of memory.
I found this manual for memory expansion of the wsx model:

The pcb of the wsx and wx look comparable.

I have two questions:

Can I use the same procedure for the WX?

Somebody gave me 2 memory chips with the follwing number: TMS44C256-10N.
Are these usable?

I want to be sure before I destroy something.

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By saccopharynx

Master (151)

Аватар пользователя saccopharynx

08-02-2013, 23:34

Why not to buy an external memory and connect it to one of the slots? Is that too expensive? Or maybe if you are willing to have something else, like a harddrive connection, a combo might be much suitable, if there are any.

By Oldskool

Rookie (24)

Аватар пользователя Oldskool

09-02-2013, 10:30

An internal memory expansion is a nicer solution. And it seems really easy.
(256kb seems easy 512kb is looking like a higher risk and i only have 2 chips)

but coming back to my question will this work in the WX model?

By Jipe

Paragon (1445)

Аватар пользователя Jipe

09-02-2013, 11:42

for WX just cut J2 and connect J3 jumpers after remove 41464 memory and solder the 44256 memory

By Guillian

Prophet (3406)

Аватар пользователя Guillian

09-02-2013, 11:46

Here you have some schemes

By Oldskool

Rookie (24)

Аватар пользователя Oldskool

09-02-2013, 15:34

Hello Jipe and Guillian,

Thanks for the reply Smile

By jimmys_top

Supporter (10)

Аватар пользователя jimmys_top

10-02-2013, 10:57

Just go with the internal 512, if possible!
I used a guide that allows you to use a chip from a 72-pin edo ram module.