Language-specific CPUs was Re: uIEC/SD == AWESOME!
Tony Duell
ard at p850ug1.demon.co.uk
Thu Jan 1 12:56:07 CST 2009
>
> On 1 Jan 2009 at 9:51, Rick Bensene wrote:
>
> > Yes, the Wang 2200-series machines used a microcoded architecture that
> > implemented a BASIC interpreter as a native "language".
>
> Like an IBM 5150 without any disks? If we're talking about
> "directly executing" shouldn't the hardware be so tightly wound up
> with the language that reprogramming it (say, by replacing ROMs) to
> host some other language is impossible? Otherwise, it's just a
> conventional processor executing a stored program.
OK, suppose we take a typicel microcomputer with BASIC in ROM and replace
the ROMs with a (very large) set of AND and OR gates to carry out the
same logic function (after all, a ROM is just a fixed AND matrix
(the address decoder) follered by a programablt OR matrix (combines the
outputs of that decoder into the desired output words). Is that a
hardware implenentation of BASIC or not :-)
-tony
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