AMD Am2900
Am2900 is a family of bit-slice components introduced by Advanced Micro Devices (AMD) in 1975. These were intended to allow you to freely assemble a micro-programmable CPU according to your own needs according to the concept of bit slicing . The Am2901 chip, as an arithmetic and logic unit (ALU), was the "core" of the series. He could calculate on 4 bits and execute binary operations as well as various shift operations. With the Am2902, a carry-look-ahead module, and the Am2904 word-edge module, it was possible to combine arithmetic units with a width of a multiple of 4 bits. The microprogram control unit could be built with an Am2910 processor.
A well-known representative of the Am2900-based CPUs is an implementation of the PDP-11 mini-computer from Digital Equipment Corporation, which was widely used at the time . 16 of these circuits form the floating point processor (FPP) with 64-bit processing capacity. This is implemented in the PDP-11/34 or PDP-11 / 34A, for example.
Other members of the Am2900 family were the Am2902, Am2903, Am2904, Am2905, Am2906, Am2907, Am2908, Am2912, Am2913, Am2914, Am2915, Am2916, Am2917, Am2918, Am2919, Am2920, Am2921, Am2922, Am2923, Am2924, Am2926, Am2927, Am2928, Am2929, Am2930.
The Am2900 family was also manufactured under license from Motorola , National Semiconductor , Signetics , Thomson, and Cypress Semiconductor Corporation .
