Interested in UNIVAC 9000 Series (and IBM 360)

Charles Dickman chd at
Sun Nov 20 17:30:23 CST 2016

On Fri, Nov 18, 2016 at 6:15 PM, Jon Elson <elson at> wrote:

> OH, yeah!  Besides the limited instruction set, short registers only half
> populated, etc., did you know that the 360/20 did not have an adder?

This made me curious about how primitive it was, but the FE docs on
bitsavers show a 16bit ALU that can do ADD, AND, OR and XOR and maybe
some logic to help with BCD math.

More information about the cctech mailing list