RTX-2000 processor PC/AT add-in card (any takers?)

Paul Koning paulkoning at comcast.net
Tue Apr 11 12:05:33 CDT 2017

> On Apr 11, 2017, at 12:37 PM, Chuck Guzis via cctalk <cctalk at classiccmp.org> wrote:
> On 04/10/2017 02:23 PM, Eric Smith wrote:
>> When the 432 project (originally 8800) started, there weren't many
>> people predicting that C (and its derivatives) would take over the world.
> That's the danger of a too-aggressive CISC, isn't it?  I suppose that
> it's safe to say that if you look under the hood of any modern CPU,
> there's a RISC machine in there somewhere.

Back then it would have seemed a reasonable assumption that high level, strongly typed, languages would continue to flourish.  If you assume Algol or Pascal or Ada, a machine like the 432 (or like the Burroughs 5500 and its descendants) makes perfect sense.

I don't think this is exactly a question of RISC vs. CISC, but rather a question of how you believe addressing is done.  For example, the EL-X8 is a one address machine with a regular instruction layout, which makes it somewhat RISC like in structure.  But it has addressing modes clearly designed for efficient handling of block structured recursive languages like Algol.


More information about the cctech mailing list