AMD Am2900

Am2900 is a 1975 by Advanced Micro Devices (AMD) introduced family of bit-slice components. These were meant to be put together according to the concept of bit -slicing a micro-programmed CPU freely according to their own needs. The Am2901 chip was as arithmetic logic unit (ALU ) of the "core" of the series. He could count to 4 bits and perform binary operations and various shift operations. With the Am2902, a carry-look -ahead block, and the Am2904 - word boundary block could thus composed arithmetic units with a width of a multiple of 4 bits. The microprogram control unit could be set up with an Am2910 processor.

A well-known representative of the Am2900 -based CPUs is an implementation of the then widespread minicomputer PDP -11 Digital Equipment Corporation. 16 of these circuits form the floating point processor (FPP ) with 64-bit processing width. This is implemented for example in the PDP-11/34 and PDP-11/34A.

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, Am2925, Am2926, Am2927, Am2928, Am2929, Am2930.

The Am2900 family was also manufactured by Motorola, National Semiconductor, Signetics, Thomson and Cypress Semiconductor Corporation under license.