Patent
1996-05-09
1998-12-29
An, Meng-Ai T.
395280, 395287, 395551, 395555, 395559, 395878, G06F 1300
Patent
active
058549447
ABSTRACT:
Method and apparatus in a data processing system (10) for determining wait states on a per cycle basis. The present invention provides a wait state value (39) to a data processing system (10) indicating the number of wait states for each bus cycle. In one embodiment, a wait state pulse (81) is provided by data processing system (10), during which the wait state value (39) is provided to data processing system (10) by way of data bus (82). In response to the wait state value (39), data processing system (10) inserts a number of wait states corresponding to the wait state value (39) during the present bus cycle. In one embodiment of the present invention, a chip select signal (73) is combined with a portion of the address (83) to further partition the address range of the chip select signal (73).
REFERENCES:
patent: 3737637 (1973-06-01), Frankeny et al.
patent: 4050096 (1977-09-01), Bennet et al.
patent: 4096571 (1978-06-01), Vander Mey
patent: 4692895 (1987-09-01), Huffman
patent: 4788660 (1988-11-01), Arizono
patent: 4816996 (1989-03-01), Hill et al.
patent: 4958277 (1990-09-01), Hill et al.
patent: 5151986 (1992-09-01), Langan et al.
patent: 5155812 (1992-10-01), Ehlig et al.
patent: 5201036 (1993-04-01), Yoshimatsu
patent: 5239641 (1993-08-01), Horst
patent: 5253355 (1993-10-01), Grieff
patent: 5261073 (1993-11-01), Mann
patent: 5313621 (1994-05-01), Chan
patent: 5313648 (1994-05-01), Ehlig et al.
patent: 5448744 (1995-09-01), Eifert et al.
patent: 5493656 (1996-02-01), Tsukamoto
patent: 5498981 (1996-03-01), Fukushige
patent: 5530906 (1996-06-01), Cho et al.
patent: 5581503 (1996-12-01), Matsubara
patent: 5581745 (1996-12-01), Muraoka et al.
patent: 5619669 (1997-04-01), Katsuta
patent: 5623648 (1997-04-01), Childs
patent: 5732250 (1998-03-01), Bates et al.
patent: 5740382 (1998-04-01), Woodbridge et al.
patent: 5740404 (1998-04-01), Baji
patent: 5761532 (1998-06-01), Yarch et al.
Motorola, Inc., MC68332 User's Manual, Chapter 4: System Integration Module, pp. 4-27 through 4-46.
Catherwood Michael I.
McKinnon Gordon W.
Robertson Norrie R.
An Meng-Ai T.
Darbe Valerie
Hill Susan C.
Motorola Inc.
LandOfFree
Method and apparatus for determining wait states on a per cycle does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for determining wait states on a per cycle , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for determining wait states on a per cycle will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1430335