The CPU
The CPU consisted of a total 24 printed circuit boards. The last 8 positions in the rack were used for I/O devices operated by program control, such as the console Teletype, punched paper tape and punched card reader and punch, line printer, display, operator's panel, and the real time clock.
The Nord-10 had 160 registers, of which 128 were available to programs, 8 on each of the 16 program levels. 6 of those registers were general registers, one was the program counter, and the other contained status information. Floating point operations were standard. The instructions could operate on 5 different formats, a bit, an 8-bit byte, 16-bit words, 32-bit double words, and 48-bit floating point words.
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