Semiconductor integrated circuit device which controls the activ

Details Semiconductor integrated circuit device which controls the activ Semiconductor integrated circuit device which controls the activ

1992-05-26

1996-05-14

Pan, Daniel

Boots, shoes, and leggings

3642217, 3642295, 3642316, 3642317, 3642343, 3642394, 3642395, 3642398, 3642399, 3642412, 3642421, 36424232, 36424231, 3642628, 3642674, 3642678, 364DIG1, 364DIG2, 395375, G06F 924, G06F 926, G06F 906, G06F 944

Patent

active

055176534

ABSTRACT:
A semiconductor integrated circuit device includes a memory storing a microprogram used for controlling a desired function, a generator for generating an internal microprogram activating signal. A switching part selects either one of an external microprogram activating signal generated by an external device and the internal microprogram activating signal generated by the generator based on a first signal supplied from outside of the semiconductor integrated circuit device, thereby outputting a selected microprogram activating signal. A microaddress generator generates a microaddress of the microprogram stored in the memory. The microaddress generator is activated by the selected microprogram activating signal.

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patent: 4521858 (1985-06-01), Kraemer et al.
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patent: 4835738 (1989-05-01), Niehaus et al.
patent: 4875160 (1989-10-01), Brown, III
patent: 4875161 (1989-10-01), Lahti
patent: 4891754 (1990-01-01), Boreland
"An Interactive Diagnostic/Debugging Subsystem for Bit-slice Processors" F. J. Burkowski, IEEE, 18th Annual Workshop on Microprogramming, Dec. 3-6, 1985, pp. 35-46.

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