2901 > NatSemiIDM2901A-1

Modified: 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).