2 Jan
2019
2 Jan
'19
12:31 a.m.
-----Original Message-----
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Carlo Pisani via
cctalk
Sent: Tuesday, January 01, 2019 5:35 PM
To: ben; General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Motorola M88K books & user manuals (looking for)
I'm curious as to why you make this claim that microcode is no-go in
"modern" designs. Could you please elaborate on this point? I don't see
why the alternative random control logic would be a better proposition.
Thanks,
paul
I was never a fan of RISC architecture as does
not fit the standard high
level language model. Everybody wants a 1 pass compiler, thus the RISC
model. If you are doing your own RISC model, you might consider a model
that supports Effective addressing better since we have got the point
where fetching the data is taking longer than processing it.
yup. I am a 68k programmer so I know what you mean.
the 68k is more comfortable to be programmed in assembly, and even the
EA modes (especially in the 68020 and CPU32) help a lot.
unfortunately, the 68K is very complex to be designed, and the first
68020 used microcode, which is a no-go for modern designs.
...