From a programmer's point of view, it was a complete replica of the VAX 11/750 Comet and unlike the MicroVAX microprocessors produced by DEC, it included floating-point arithmetic.
The chipset included a processor, a coprocessor for integer and floating-point arithmetic, a memory controller, and a bus adapter.
The Electronika-32 computer and a VAX-PC board were built based on this chipset, as well as the aerospace on-board digital computer SB3541 (developed by LNPOEA - OKB "Electroavtomatika", St. Petersburg).
According to posts on the FidoNet forum MO.DEC,[2] the arithmetic coprocessor was originally released with errors, and it was not always possible to run software written for the VAX.
To circumvent this, updated microprograms were released to emulate the coprocessor functions in microcode on the CPU.