Function of the card:
SDTDL 2 way logic blck low sp w lds
SDTDL - 3-way logic block low speed with loads
SDTDL - 3-way logic block low speed with loads.
SDTDL-3-Way Logic Block Low Speed with Loads
Listed in 1401 SMS card usage
Exists in SLT version.
Part number: 370378
SLT modules: 2399114, 2399115, 361431
Customer Eng reference number: 729915
PCB number: 484029
Image courtesy of Henk Stegeman
IBM 1443 ALD, p96
IBM 2821 CCD, p52
2_2 SMS Cards, pp86,87
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.