Look ahead bus transfer request

Boots – shoes – and leggings

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

395425, 3649643, 3642432, G06F 1300

Patent

active

051797097

ABSTRACT:
A technique for use in an I/O channel to increase bus bandwidth during DMA data transfers between main system memory and a communication link is disclosed, including a pair of buffers, a plurality of counters adapted to selectively contain a count of data increments therein, and enhanced DMA control logic for monitoring buffer data content amount, and at a predetermined time during a given transfer initiating a bus arbitration so that it is completed simultaneously with the given transfer, thereby enabling the next data transfer from the buffer in use to immediately commence.

REFERENCES:
patent: 4032899 (1977-06-01), Jenny
patent: 4060849 (1977-11-01), Bienvenu
patent: 4067059 (1978-01-01), Derchak
patent: 4181936 (1980-01-01), Kober
patent: 4215400 (1980-07-01), Denko
patent: 4449183 (1984-05-01), Flahive
patent: 4536839 (1985-08-01), Shah et al.
patent: 4627018 (1986-12-01), Trost et al.
D. S. Keener, "Maximizing Direct Memory Access Efficiency in Multi-Master Bus Systems", IBM TDB, vol. 30, No. 12, May, 1988, p. 211.
G. W. Havelick et al., "Automatic Channel Request for Data Transfers", IBM TDB, vol. 24, No. 10, Mar., 1982, pp. 5295-5297.
W. Chapman et al., "Bus Arbitration and Buffer Management", IBM TDB, vol. 30, No. 11, Apr., 1988, pp. 387-391.
M. W. Riley et al., "Automatic Direct Memory Access Buffering in a Mixed-Width/Dual-Memory System Architecture", IBM TDB, vol. 31, No. 1, Jun. 1988, pp. 36-38.
P. A. Buckland et al., "Data Transfer Performance Enhancement for Hard Files", IBM TDB, vol. 31, No. 2, Jul. 1988, pp. 335-337.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Look ahead bus transfer request does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Look ahead bus transfer request, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Look ahead bus transfer request will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1226414

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.