Function of the card:
SDTDL 3 way n and log blk w/o lds
Exists in SLT version.
Part number: 372588
SLT modules: 2399110, 361431
Customer Eng reference number: 734402
Used in: IBM 2821 Control Unit
Image courtesy of Henk Stegeman
The information on these pages comes from a variety of sources, especially old IBM documents on bitsavers.org, as well as information from the IBM 1401 restoration team, especially Tim Coslet's SMS data and Jim Hunt's data. Much of this information was obtained through OCR, so don't expect complete accuracy. These pages are not associated with IBM in any way.