Does anyone happen to have a datasheet or scans from a databook for the AMI S2350 USRT? This is a synchronous receiver/transmitter that was used in several floppy controllers-- including the Heath H17/H88-1 and a PERCOM SS-50 bus (for SWTPC 6800) system that I have. I cannot find any documents for this beast online. I also tried contacting ON Semiconductor who now own AMI but they claim to be unable to find said datasheet. It should be circa 1979, 1980 I believe... if anyone has an AMI databook Thanks. Chris -- Chris Elmquist mailto:chrise at pobox.com