I think you are like I am. I would like to see every DEC simulator possible. Right now I am doing some preliminary research into the feasibility of a VAX 11/782 which is an asynchronous dual processor 11/780. I will need help because I am not a real experienced coder.
On Sep 6, 2016 8:21 PM, "khandy21yo" <[email protected]> wrote: > Just curious,. Is there any thought about emulating any of the Dec mate > Line? I used to deal with them, mostly as wps8. I don't know what the > hardware differences are, but I saw a large number of Dec mates and only a > few pdp8s. How compatible were they? > > > > Sent from my Galaxy Tab® A > > -------- Original message -------- > From: Ethan Dicks <[email protected]> > Date: 9/6/16 5:00 PM (GMT-07:00) > To: [email protected] > Subject: Re: [Simh] Pdp8 terminals > > On Tue, Sep 6, 2016 at 1:03 PM, Johnny Billquist <[email protected]> wrote: > > Hi. > > > > On 2016-09-06 18:55, Bob Supnik wrote: > >> > >> The PDP8 simulator is more or less a PDP8/A, and its terminal > >> "multiplexor" is a KL8-JA, which implements four discrete KL8A style > >> interfaces. These are superset compatible with the PDP8/I's PT08 > >> discrete interfaces, and thus TSS/8 will work. Note that TSS/8 supports > >> only four discrete terminal interfaces. To get more than four lines, the > >> configuration must have a DC08(A), a multiplexor for the PDP8/I. The > >> DC08(A) is not implemented at the moment. > > > > > > This can't be correct. > > > > The KL8JA is a single line interface, compatible with the KL8E, but using > > different hardware. You can add lots of KL8E or KL8JA interfaces to a > PDP8, > > if you wanted to. Each have a different device code, and that's all > there is > > to it. (Talking about the actual hardware here.) In addition, as far as > I am > > aware, the programming of these interfaces are pretty much the same as > the > > console interface on all other PDP-8 models as well. > > > > The KL8A was a very late device for Omnibus, which require a hex wide > box. > > It is a 4 line multiplexor, but the programming interface is nothing like > > the KL8JA or KL8E. In addition, not all lines are the same. And again, > you > > can add several of these multiplexers to a machine, if you want to. > > Agreed... here are the handle numbers to help clarify what we are all > talking about... > > M8319 KL8A PDP-8/A 4 channel serial I/O > > M8650 KL8E Asynchronous Data Control (current loop or RS232) > M8655 KL8JA Terminal Control (UART based substitute for M8650) > > > The KL8E and KL8JA are, AFAIK, not easy (or not possible?) to tell > apart in software. The KL8A is entirely different - the only time > I've ever used my KL8A was with RTS-8. I'm not sure I have any OS/8 > code that knows how to talk to it. If it's out there, I'd love to > read it. > > >> There was a significant evolution in the PDP8 family's IO controllers > >> from the original 8 and 8/I to the Omnibus-based 8/E and 8/A. > > Very true. I have a bunch of the real hardware spanning the entire > era and, yeah, Omnibus devices and pre-Omnibus devices are commonly > different (I think the console 03/04 interface is, up to the DECmate > era, the most compatible across the spectrum). > > -ethan > _______________________________________________ > Simh mailing list > [email protected] > http://mailman.trailing-edge.com/mailman/listinfo/simh > > _______________________________________________ > Simh mailing list > [email protected] > http://mailman.trailing-edge.com/mailman/listinfo/simh >
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