At 17.59 2011.10.17, you wrote: > > >alan.b.pearce@stfc.ac.uk wrote: > >> > I believe PDP11 fails modern RISC tests because it uses a memory/ >> > register architecture for most operations, and supports double memory >> > operands as well. But I've also been surprised that no one has simply >> > duplicated a PDP11-on-a-chip (not counting DEC themselves.) (I guess >> > that 64k address space is a bit quaint these days...) >> >> I think it was Fairchild who were making a PDP-on-a-chip - but I=20 >think it used the PDP-8 architecture. AFAIK it never made it to=20 >market, although I did see marketing literature. > >Their were a couple PDP8 on a chip parts made. I used a few IM6100 and=20 >IM6110 parts made by intersil. Both Western Digital and DEC made PDP11=20 >on 3 or 4 chips http://www.google.com/#sclient=3Dpsy-ab&hl=3Den&source=3Dhp&q=3DPDP11+on+a+= FPGA&pbx=3D1&oq=3DPDP11+on+a+FPGA&aq=3Df&aqi=3D&aql=3D1&gs_sm=3Ds&gs_upl=3D= 3505l3505l0l4838l1l1l0l0l0l0l1169l1169l7-1l1l0&bav=3Don.2,or.r_gc.r_pw.,cf.= osb&fp=3Dbd638b897581bb57&biw=3D1728&bih=3D914 ;-) Whatever is the subject, if you google on a FPGA you will almost certainly find that someone has implemented it. :D Gotta go, I have to enter granny on a FPGA on Google :P > >w.. > > >--=20 >http://www.piclist.com PIC/SX FAQ & list archive >View/change your membership options at >http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .