These are AMD CMOS chips, which require (to my knowledge) a higher voltage than the SPB can provide, to write to. They work fine when using a writer connected to a PC. I have downloaded several of the bin files from simmonsmuseum.com (thanks for those!), and they work perfectly fine on the CMOS chips you are referring to in an SDS7 or an SDS1, and maybe an SDS9. Personally, I haven't tested on an SDS9, seeing as I do not own one ( if anyone feels like donating to the cause, I would not be offended one bit :-P ). Of course you will need to erase them before you attempt to write to them, or you can see what they sound like first. Some sound really cool, some sound really spacey, and some just sound like ass.
Hope this helps.
Thomas
--- In Simmons_Drums@yahoogroups.com, "p_k_daniels" <p_k_daniels@...> wrote:
>
> Hi Gents,
> Can anyone tell me if the following are usable with simmons kits?
> 24 pin eeprom
> marked on top as follows
> AM27C256
> -1500C
> 9629BPA
> 1986 AMD
>
> there are 30 of these being thrown out at work, which I have squirreled away pending your input.
> Thanks
> Pete
>