Bus system for coordinating internal and external direct memory

Details Bus system for coordinating internal and external direct memory Bus system for coordinating internal and external direct memory

1991-02-19

1994-09-13

Dixon, Joseph L.

Boots, shoes, and leggings

3642285, 3642423, 36424231, 36424233, 36424341, 36424531, 364259, 3642592, 364260, 3642603, 3642563, 364240, 36493143, 36492797, 3649412, 36494833, 3649612, 395325, 395400, 395800, G06F 13368, G06F 1328

Patent

active

053476433

ABSTRACT:
A one-chip microprocessor including an instruction execution unit, a DMA controller, and a memory management unit. The instruction execution unit has a logical address for storing an address to be accessed. The DMA controller has a DMA register for storing an address given when direct memory access is performed. The memory execution unit further includes an address converting means for converting a logical address stored in the logical address register of the instruction execution unit into a physical address to be accessed, a hit determining means for determining whether or not the cache memory connected as an external unit is hit on the basis of the physical address, and a burst transfer circuit for performing burst transfer of the cache memory. The one-chip microprocessor is connected by a bus to a system having a cache memory, a memory controller and a main memory.

REFERENCES:
patent: 4567606 (1986-01-01), Vensko et al.
patent: 4626985 (1986-12-01), Briggs
patent: 4760524 (1988-07-01), Iwasaki et al.
patent: 4908748 (1990-03-01), Pathak et al.
patent: 4912636 (1990-03-01), Magar et al.
patent: 5005121 (1991-04-01), Nakada et al.
patent: 5099417 (1992-03-01), Magar et al.
patent: 5146573 (1992-09-01), Sato et al.
patent: 5161247 (1992-11-01), Murakami et al.

Affiliated with

Also associated with

Rating

Bus system for coordinating internal and external direct memory does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bus system for coordinating internal and external direct memory , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bus system for coordinating internal and external direct memory will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1127056