> -----Original Message----- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Camiel > Vanderhoeven > Sent: 12 July 2016 09:56 > To: General Discussion: On-Topic and Off-Topic Posts > <cctalk@classiccmp.org> > Subject: RE: IBM 360/30 in verilog > > Op 12 jul. 2016 10:14 a.m. schreef "Dave Wade" <dave.g4...@gmail.com>: > > > > > -----Original Message----- > > > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of > > > Curious Marc > > > Sent: 12 July 2016 08:58 > > > To: General Discussion: On-Topic and Off-Topic Posts > > > <cctalk@classiccmp.org> > > > Subject: Re: IBM 360/30 in verilog > > > > > > Darn. My hopes are shattered. Lots of Verilog in my future, that is > > > if > we > > can > > > find 360/50 ALDs... > > > Marc > > > > > > > It actually might be easier to produce a generic S/360 clone in FPGA > > using the POP rather than individual ALU's. > > Having built a very simple CPU (in VHDL not Verilog) and planning to > > start on a more complex (Ferranti Pegasus) Of course it wouldn't be > > cycle accurate, but perhaps that wouldn't be important. > > Sure, a generic one would be simpler, but the point of doing an accurate one > of a specific model (65 in my case) is to accurately drive the panel that > shows > the internal registers and opening of gates.
I think you are correct. I had assumed that the panel only displayed the normal 360 registers, in which case the VHDL could easily route these to a panel, but on reading the 360/65 Functional Characteristics http://bitsavers.informatik.uni-stuttgart.de/pdf/ibm/360/funcChar/A22-6884-3_360-65_funcChar.pdf I can see several registers are displayed that are not mentioned or defined elsewhere so you would need a Set of ALDs for the 65 (or possibly a 67 as that’s basically the same machine) to get a full panel display. It would Also be nice to see what is on the roller selector switchs as that page in the manual has not scanned very well.. Dave
