Method and apparatus for operating a microcomputer in an emulati

Details Method and apparatus for operating a microcomputer in an emulati Method and apparatus for operating a microcomputer in an emulati

1995-07-31

1997-11-25

Kim, Kenneth S.

395829, 395834, G06F 1310

Patent

active

056921616

ABSTRACT:
Disclosed is a microcomputer capable of working in emulation mode with internal and external peripherals. The microcomputer comprises a central processing unit, an internal address decoder, an internal memory and internal peripherals connected to a data and address bus. The central processing unit has input/output ports for external access in user mode according to the invention. The input/output ports are connected to the external peripherals and to an external address decoder. The external address decoder sends out a signal applied to the central processing unit to block the pre-loading of the internal address decoder when an external peripheral is selected in emulation mode.

REFERENCES:
patent: 4441154 (1984-04-01), McDonough et al.
patent: 4514805 (1985-04-01), McDonough et al.
patent: 4649471 (1987-03-01), Briggs et al.
patent: 4797808 (1989-01-01), Bellag et al.
patent: 4875186 (1989-10-01), Blune, Jr.
patent: 4949241 (1990-08-01), Iwasaki
patent: 5001624 (1991-03-01), Hoffman et al.
patent: 5053949 (1991-10-01), Allison et al.
patent: 5084814 (1992-01-01), Vaglica et al.
patent: 5140687 (1992-08-01), Dye et al.
patent: 5155812 (1992-10-01), Ehlig et al.
patent: 5155839 (1992-10-01), Weppler
patent: 5168559 (1992-12-01), Tamura
patent: 5247642 (1993-09-01), Kadlee
patent: 5291584 (1994-03-01), Challa et al.
patent: 5361348 (1994-11-01), Nakamoto
patent: 5457802 (1995-10-01), Catherwood et al.
EDN Electrical Design News, vol. 24, No. 6, Mar. 16, 1989, Newton, Massachusetts, pp. 131-144, Eric P. Horton, "Contruct a Low-Cost 8096-Family Development System".
EDN Electrical Design News, vol. 31, No. 23, Nov. 13, 1986, Newton, Massachusetts, US pp. 193-207, Eric P. Horton, "Make Your Own Low-Cost 8051 Emulator".
Intel, APX 86/88, 186/188 User's Manual, 1985, pp. 3-11 to 3-19.
Intel, APX 86/88, 186/188 User's Manual, 1985, pp. 3-11 to 3-14.

Affiliated with

Also associated with

Rating

Method and apparatus for operating a microcomputer in an emulati 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 operating a microcomputer in an emulati, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for operating a microcomputer in an emulati will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2115755