Direct memory access control circuit and data processing system

Details Direct memory access control circuit and data processing system Direct memory access control circuit and data processing system

1984-08-09

1987-04-14

Williams, Archie E.

Boots, shoes, and leggings

G06F 1328

Patent

active

046583491

ABSTRACT:
A direct memory access control circuit equipped with a first register for storing the top address of a memory area, a second register for storing the bottom address of that memory area, a comparison circuit for comparing the current address used for memory access with the bottom address stored in the second register, and a control circuit for replacing the current address, which is to be subsequently used for memory access, with the top address stored in the first register when coincidence is detected by the comparison circuit.

REFERENCES:
patent: 3573855 (1971-04-01), Cragon et al.
patent: 3638195 (1972-01-01), Brender et al.
patent: 3903510 (1975-09-01), Zobel
patent: 4035777 (1977-07-01), Moreton
patent: 4056853 (1977-11-01), Bishop et al.
patent: 4125870 (1978-11-01), Suzuki et al.
patent: 4169289 (1979-09-01), Shively
patent: 4181936 (1980-01-01), Kober
patent: 4202035 (1980-05-01), Lane
patent: 4215400 (1980-07-01), Denko
patent: 4298932 (1981-11-01), Sams
"Build a Microcomputer-Chapter VII Direct Memory Access," by Advanced Micro Devices, Inc., 1978, pp. 1-18.
"MCS-80/85 Family User's Manual," by Intel Corporation, 1979, pp. 6-115 to 6-131.
Knuth, The Art of Computer Programming, Second ed.; vol. 1, Addison-Wesley, 1973, pp. 240-248.
The 8080/8085 Microprocessor Book; John Wiley and Sons, 1980, pp. 207-215.
Wakerly; Microcomputer Architecture and Programming, John Wiley and Sons 1981, pp. 63-68, 340-344.

Affiliated with

Also associated with

Rating

Direct memory access control circuit and data processing system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Direct memory access control circuit and data processing system , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Direct memory access control circuit and data processing system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1789925