Memory designation control device

Details Memory designation control device Memory designation control device

1992-11-10

1996-12-31

Swann, Tod R.

Boots, shoes, and leggings

395430, 364DIG1, 364DIG7, 36518533, G06F 1200, G06F 1202, G11C 1606

Patent

active

055903037

ABSTRACT:
A memory designation control device having a rewriting program for rewriting the contents of a first memory device storing a basic program stored in a second memory device different from the first memory device. When the system power supply is turned on when a normal processing mode is selected, only the first memory device out of the first memory device and the second memory device is brought into a selectable state. Consequently, in the normal processing mode, normal processing is executed on the basis of the basic program. When the system power supply is turned on when a rewrite processing mode is selected, only the second memory device out of the first memory device and the second memory device is brought into a selectable state at the time of a read instruction, while only the first memory device out of the first memory device and the second memory device is brought into a selectable state at the time of a write instruction. Consequently, in the rewrite processing mode, rewrite processing is executed on the basis of the rewriting program.

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