Cycle Computer Corporation Sun clone board...

[Andrew Reynolds]

On Wed, May 25, 2005 at 01:49:12PM +0000, Jules Richardson wrote:
> 
> Just picked one of these up, lurking in a SPARCStation 1 case. I gether
> it's a SPARC 5 clone board.
> 
> It seems to have 30 pin SIMM memory, but also a couple of 72 pin sockets
> (both of these and all 16 30 pin sockets are filled). 
> 
> Anyone able to tell me if there's anything special about the 72 pin
> sockets? I'm assuming both types of socket are used as main memory and
> this was just done for flexibility, but it'd be nice to know (just in
> case the 72 pin ones are for disk cache or something equally strange)
> 
I have one of these boards in the same case, they must have been a popular
upgrade. It's my understanding that you have to install a matched pair of
72 pin parity simms. According the web site (which is now gone), the max RAM
was 128MB (16 x 4MB 30 pin simms, 2 x 32MB 72 pin simms). This is how mine
is configured. They also use the Sun Y serial cable that splits one DB-25 into
A/B serial ports, as well as an external dongle for audio. The other DB-25 is
a parallel port. 

It's actually quite a nice board.

-Andrew