Memory upgrade sony HB-f1xd ?

Door jfs

Supporter (6)

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16-09-2010, 10:28

Hi everybody,

I'm a new owner of a Msx2 sony HB-F1XD with 64ko.

I want to know how to upgrade memory to 128ko or 256ko.

Thanks for your help!


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Van RetroTechie

Paragon (1563)

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16-09-2010, 13:27

Internally I assume? If service manual is correct, HB-F1XD has S1985 engine IC inside, meaning it should be pretty easy to upgrade to 512K (using either 4 pcs. 256Kx4 DRAMs, or a 512Kx8 SRAM). Sadly I don't know exact method for this model... Crying maybe someone else does?

Btw - welcome here, jfs! Running Naked in a Field of Flowers

Van jfs

Supporter (6)

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16-09-2010, 13:51

Thank you Retrotechie.

Van jfs

Supporter (6)

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17-09-2010, 12:20

Nobody else?

Van Dhampird

Hero (589)

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17-09-2010, 20:05

Hello, probably this post :

could help to you to have only an overview of how to install an internal memory SRAM Into your sony HB-F1XD, the diagrams is for a HB-F9s, notice especially at the end of the post where you can see the installation diagram of AS6C4008 SRAM (Static SRAM 512K x8).


Van LS120

Expert (105)

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12-12-2019, 06:42

did you get your HB-F1XD 512kb upgrade? if so i have the HB-F1 which is meant to be same with out FDD.. where did you connect the X5 to so you get 512kb.. all pics on the sight are dead links..

Van daniel683104

Paragon (1254)

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22-12-2019, 23:01

look this video it explains how to do it