Boots – shoes – and leggings
Patent
1984-05-30
1987-03-17
Zache, Raulfe B.
Boots, shoes, and leggings
371 16, 371 20, G06F 1500, G06F 1130
Patent
active
046512985
ABSTRACT:
A test computer has a direct memory access module, interface units, and a data select unit for each of several system busses. Only some of the data on each system buss is to be transferred to the direct memory access module. The data is organized with a command or header word which may be followed by a number of data words. The principle is to first check the command word to see if any data items are desired from the particular transfer, and if they are to check the position of each data item to see if it is desired. The data select unit includes a select memory, a position counter, and a position memory. During a load mode information from the test computer is loaded into the memories and counter to designate what data is to be transferred from the system buss. During a run mode, input control circuits of a bus interface unit selects and supplies the command word to the data control unit to address the select memory, which indicates what items are to be transferred A yes
o bit is read from the position memory for each position to determine if the data word is to be transferred, the position counter being incremented for the succesive positions. If an ALL bit was set, all data following a command word is transferred until the next command word.
REFERENCES:
patent: 4100532 (1978-07-01), Farnbach
patent: 4425643 (1984-01-01), Chapman et al.
patent: 4517671 (1985-05-01), Lewis
patent: 4554632 (1985-11-01), Nygaard, Jr. et al.
patent: 4601033 (1986-07-01), Whelan
Franz Bernard E.
Lee Thomas C.
Singer Donald J.
The United States of America as represented by the Secretary of
Zache Raulfe B.
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