Boots – shoes – and leggings
Patent
1985-01-07
1988-06-07
Williams, Jr., Archie E.
Boots, shoes, and leggings
G06F 1310, G06F 1332
Patent
active
047501073
ABSTRACT:
A peripheral controller (data link processor) controls data transfers between a host computer and a plurality of tape peripheral units and a single printer peripheral unit. A master microprocessor commands three subordinate controllers to permit concurrent data transfers through a buffer memory in both the Read and the Write directions. A dual channel control from the master microprocessor actuates a DMA switch so that data transfers to/from the tape units can be controlled by switching on alternate control lines which regulate the data transfer operations.
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Satoh-"Terminal Communication Adapter", IBM TDB, vol. 26, No. 12, May 1984, pp. 6504-6505.
Hays-"Standard Printer or I/D Adapter Emtrol Method and Apparatus", IBM TDB, vol. 22, No. 1, Jun. 1979, pp. 269-271.
Cass Nathan
Kozak Alfred W.
Lee Thomas C.
Marhoefer L. Joseph
Unisys Corporation
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