>-----Original Message----- >From: cctalk [mailto:cctalk-boun...@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 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. > >...
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
