AMD 2901 bit-slice processor family includes 2901 and 2903
4-bit microprocessors slices, 2909 and 2911 microprogram sequencers,
2910 microprogram controller and other support chips.
The 2901 processor consists of 16 4-bit registers, 4-bit ALU and associated
decoding/multiplexing circuits.
The ALU accepts 9-bit microinstructions that specify source operands, ALU function and the destination register. The 2901 ALU can perform 8 different functions (they are encoded into 3 bits within the microinstruction)
The ALU accepts 9-bit microinstructions that specify source operands, ALU function and the destination register. The 2901 ALU can perform 8 different functions (they are encoded into 3 bits within the microinstruction)
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