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2901 > NatSemiIDM2901A-1
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CPU Shack  - May 30, 2005, 6:02 pm
Manufacturer:National Semiconductor
Model:IDM2901A-1
Speed:??
Type:2901
Data Code:8424
Introduced:1975
Transistors:??
Package:40PDIP
Process:3 Micron
Architecture:4-Bit Slice
Used in:Controllers
Description: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):
addition, subtraction and logic operations.
Multiple 2901 bit-slice processors could be
combined together to build microprocessors with
any data width (in 4 bits increments).
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