We dumped a seemly rare revision of 2 On 2 Open Ice Challenge. This new revision is 1.2A and marks the only time I have ever seen a version different the standard revision 1.21 that seems to be on all released PCBs.
BrianT
http://www.mameworld.info/ubbthreads/showthreaded.php?Cat=&Number=363846
[Posted by: BrianT]