Function of the card:
2-5 way-no load
SDTDL-5 Way Logic Block Low Speed without Loads
SDTDL 5 way logic block low speed without load
SDTDL 5 way logic blk low sp w/0 ld
Listed in 1401 SMS card usage
Exists in SLT version.
Part number: 370375
SLT modules: 2399110, 361431
Customer Eng reference number: 729918
PCB number: 484031
Used in: IBM 1401, IBM 1410, IBM 2821 Control Unit, IBM 1311 Disk, IBM 1443 Printer
Image courtesy of Henk Stegeman
2_2 SMS Cards, p91
Coslet data
IBM 1443 ALD, p99
IBM 1311 ILD, p124
IBM 2821 CCD, p55
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.