Dan Foster writes ...
> 
> I've got a ROM 03 IIGS (and also a ROM 00 GS as a spare backup, but the
> ROM 03 GS is where I run everything) -- no cards in any slots except for
> the ZipGS in slot 2.
> 
> I received a rev 1.02 Zip GS board; far as I can determine, it's 7 MHz
> and 16K SRAM with the DIP switches set as per the csa2 FAQ on the Zip
> GS board (and it came with SW2 last two pins set for 16K). It came
> without any documentation or software.
> 
> How does one verify what speed the GS is running at? 
 ....

     You can use SpeedGS. This is a STARTUP program selector for ProDOS-8 
on the Apple IIgs which features display of Boot Volume, Date/Time, and current 
Speed. Speed is shown as a rounded multiple of 'Normal'-- i.e. 1MHz. For
instance, the display will show "Speed: x9" for a 9MHz ZipGS.

Downloads 

http://apple2.org.za/gswv/a2zine/Utils/SpeedGS.zip



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