Emulation techniques giving necessary information to a microcomp

Details Emulation techniques giving necessary information to a microcomp Emulation techniques giving necessary information to a microcomp

1991-12-13

1995-04-18

Bowler, Alyssa H.

Boots, shoes, and leggings

395800, 364578, 364DIG2, 36492781, G06F 1100

Patent

active

054086370

ABSTRACT:
An emulation apparatus is capable of setting conditions to be noticed in a programmable manner, and includes a programmable output circuit having a timing detection circuit for detecting establishment of the set conditions on referring to information and the like on an emulation bus, and data storage groups for outputting data previously stored in a programmable manner, corresponding to the condition detected by the circuit. A part of output information of the programmable output circuit is capable of being selected by a selection circuit to be supplied, instead of output information of the corresponding portion of a user's system, to a microcomputer for emulation. The programmable output circuit includes a delay circuit for delaying the output data and effectively emulates I/O ports of the target machine.

REFERENCES:
patent: 4084869 (1978-04-01), Yen
patent: 4674089 (1987-06-01), Poret et al.
patent: 4740895 (1988-04-01), Sargent et al.
patent: 4782461 (1988-11-01), Mick et al.
patent: 4785416 (1988-11-01), Stringer
patent: 4847805 (1989-07-01), Ishii et al.
patent: 5109353 (1992-04-01), Sample et al.
patent: 5228039 (1993-07-01), Knoke et al.
HMCS400 Series Emulator Unit User's Manual, Hitachi, Ltd., 1991, pp. 36-44 and 181. (Provided in English).
HMCS400 Series Microcomputers User's Manual, Hitachi, Ltd., 1989, p. 49. (Provided in English).

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