What to download for a PDP-8 (was Re: That poor system/36)
bfranchuk at jetnet.ab.ca
Wed Oct 17 11:32:42 CDT 2007
Jules Richardson wrote:
> For a math copro to be called as such, does it have to integrate itself
> with the CPU's instruction set - or does some sort of box of tricks
> sitting on an I/O port and accessed through normal CPU instructions
> count? I'm not sure what the correct definition is.
It does tricks, but then with only 8 opcodes defined on the PDP-8
what do you expect.
> What do you mean by 'smallest computer' by the way? Smallest in terms of
> spec? I'm pretty sure some of the 1950's stuff had optional floating
> point hardware available, although it wouldn't have been physically
> small :)
True, but then they had longer word lengths than a tiny 12 bits.
You are comparing apples and oranges here - late 50's
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