Boots – shoes – and leggings
Patent
1982-02-22
1985-01-15
Zache, Raulfe B.
Boots, shoes, and leggings
365203, G06F 1300
Patent
active
044941870
ABSTRACT:
A system for real-time digital processing employs a single-chip microcomputer device having a high-speed on-chip program ROM and a separate data RAM, with separate address and data paths for program and data. An external program address bus allows off-chip program fetch in an expansion mode, with the opcode returned by an external data bus. A bus interchange module allows transfer between the separate internal program and data busses in special circumstances. The internal busses are 16-bit, while the ALU and accumulator are 32-bit. A multiplier circuit produces a single state 16.times.16 multiply function separate from the ALU, with 32-bit output to the ALU. One input to the ALU passes through a 0-to-15 bit shifter with sign extension. The on-chip program ROM has a low-level precharge circuit with feedback to improve speed or access time.
REFERENCES:
patent: 4208730 (1980-06-01), Dingwall et al.
patent: 4402043 (1983-08-01), Guttag et al.
Graham John G.
Texas Instruments Incorporated
Zache Raulfe B.
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