[Info-vax] Poulson info from Dave Cantor

[glen herrmannsfeldt]

JF Mezei <jfmezei.spamnot at vaxination.ca> wrote:
(snip)

> Pretty amazing that what started off as a 8 bit bus toy controller 8086
> now not only has 64 bits, but represents 89.8% of the world's
> supercomputer centres. (Intel + AMD).

No, the 8086 is just the 16 bit extension of the 8080.  The
instruction set was designed to be source (assembler) compatible
with the 8080 instruction set, though a few 8080 instructions
need two instructions on the 8086.  The 8086 has a 16 bit
data bus, the 8088 with an eight bit data bus came out later.

Now, compare to IBM which has taken the 24 bit address S/360,
through to 31 bit addressing and then 64 bit addressing.
But size is a different question, but the 360/30 has an eight
bit data bus, and cost a lot more than the 8080.

-- glen