Microcomputer having bus isolation means for selectively couplin

Details Microcomputer having bus isolation means for selectively couplin Microcomputer having bus isolation means for selectively couplin

1998-05-27

2000-10-31

Sheikh, Ayaz R.

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus access regulation

710128, 710 38, 714 25, 714724, G06F 1300

Patent

active

061417173

ABSTRACT:
A microcomputer for allowing a connector in a bus isolation mode to connection an external bus to either a memory bus or a peripheral bus as designated by an externally input mode signal. The microcomputer thus avoids assuming the load of both the memory bus and the peripheral bus simultaneously when the bus isolation mode is in effect. The microcomputer is capable of equalizing the additional capacities of the memory bus and peripheral bus in all modes of microcomputer operation so that tests in the bus isolation mode are carried out under the same conditions as the conditions in effect during other modes of operation, whereby highly practical and reliable test data is obtained.

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