7 Mar
2011
7 Mar
'11
4:57 p.m.
Hi
The Nicolet 1080 that was designed in 1969-1970 did 20X20 mulitply with 40 bit result.
It also did divide of a 40 bit by a 20 bit to get 20 bit and remainder. It did these
as steps from a multiply or divide single instruction. Each step was 1 usec,
taking 20 usec to complete each operation.
This takes one complete board full of DTL and TTL.
As an additional function, it did bit reversal for addressing while doing
FFT's ( Its main claim to fame ).
Dwight