Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!wuarchive!uunet!pyrdc!pyrnj!pyrite!bpechter From: bpechter@pyrite.nj.pyramid.com (Bill Pechter) Newsgroups: comp.sys.dec Subject: Re: pdp-11's Message-ID: <573@pyrite.nj.pyramid.com> Date: 24 Jun 91 19:33:42 GMT References: <7JmX46w163w@zl2tnm.gp.co.nz> Reply-To: bpechter@pyrite.UUCP (Bill Pechter) Lines: 28 In article <7JmX46w163w@zl2tnm.gp.co.nz> don@zl2tnm.gp.co.nz (Don Stokes) writes: > >All modern Unibus machines have 4 as their last digit since the /34. >Where there are models with both n3 and n4 numbers, the two usually >have equivalent processors (not sure about the /03 and /04 -- are these >the same chipset?). Nope - the 11/03 used the WD Chipset (what was that chipset called?) with the DEC MICROMS to make 'em PDP11/40-ish. The 11/04 is closer to the 11/34 in design. MSI and SSI TTL 7400 series chips. The 11/04 was designed to replace the 11/05, 11/10 which used mostly SSI TTL chips (74xx). Bill Most 11/04's in non-industrial control use were upgraded to 11/34's or 11/34a's (a simple swap out of cpu boards, basically). Bill -- Bill Pechter | "The postmaster always pings twice." Pyramid Technology | bill@pyrite.nj.pyramid.com 10 Woodbridge Center Drive | rutgers!pyrnj!pyrite!bill Woodbridge, NJ 07095 (908)602-6308 | pyramid!pyrnj!pyrite!bill