IBM 360/30 in verilog

[Dave Wade]

> -----Original Message-----
> From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Camiel
> Vanderhoeven
> Sent: 12 July 2016 14:06
> To: General Discussion: On-Topic and Off-Topic Posts
> <cctalk at classiccmp.org>
> Subject: Re: IBM 360/30 in verilog
> 
> On Tue, Jul 12, 2016 at 2:07 PM, Dave Wade <dave.g4ugm at gmail.com>
> wrote:
> >
> >> -----Original Message-----
> >> From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of
> >> Camiel Vanderhoeven
> >> Sent: 12 July 2016 09:56
> >> To: General Discussion: On-Topic and Off-Topic Posts
> >> <cctalk at classiccmp.org>
> >> Subject: RE: IBM 360/30 in verilog
> >>
> >> Op 12 jul. 2016 10:14 a.m. schreef "Dave Wade"
> <dave.g4ugm at gmail.com>:
> >> >
> >> > > -----Original Message-----
> >> > > From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of
> >> > > Curious Marc
> >> > > Sent: 12 July 2016 08:58
> >> > > To: General Discussion: On-Topic and Off-Topic Posts
> >> > > <cctalk at 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..
> 
> I have a pdf file I created that shows the layout of the roller bars; I don't
> think the link can take attachments, but if you want I could email you a copy
> directly.
> 
> Camiel.

A direct reply would be very nice. 

Dave