Epson QX-10 Q10CMS board

Jules Richardson jules.richardson99 at
Sun Jun 6 19:09:56 CDT 2021

Hi all,

There was a post in one of the Facebook vintage groups from someone who has 
Epson QX-10 Q10CMS and Q10GMS boards. The GMS is what I have in my own 
QX-10, but does anyone know what the CMS board is?

Both boards have a NEC 7220 graphics controller, but the CMS appears to 
have more on-board memory (384KB vs. 256KB). On the other hand, I'm not 
seeing any on-board ROM in the photo of the CMS, unlike on my GMS.



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