Re: [Simh] IMP interfaces

I'm focusing on interfacing with a PDP-10. But it could be interesting to make a list of possible future additions. Which interfaces were there? - KA IMP: PDP-10 I/O bus. - DM IMP: PDP-10 I/O bus. Just one, made by Bob Metcalfe. - ACC LH/DH: Unibus. - DEC/CSS IMP11-A: Unibus. - CIMPSPIF:

Re: [Simh] IMP interfaces

Henry Bent wrote: > There are drivers in 4.2BSD for IMP interfaces, the ACC LH/DH and the > DEC IMP11-A. These are set up to use TCP/IP but it is unclear to me > how much work the board does vs. what is expected of the IMP itself. > As far as I am aware there is not technical documentation for

Re: [Simh] IMP interfaces

IIRC the imp11-a is built from a dr11-b with some custom interface logic to talk to the 1822 (thinking about it it was maybe 2 back to back I’ve forgotten) but from a SW stand point the registers are what is exposed by the dr11. Although the CSS folks may moved the default addresses.At

Re: [Simh] IMP interfaces

On 7 March 2018 at 14:30, Phil Budne wrote: > > >Can the IMP software and the H316 simulator talk TCP/IP to an ehernet > card? > > If we had TCP-era IMP code, one could, in theory, but as I recall the > structure of the TCP ARPAnet (net 10) address was that one octet was > the

Re: [Simh] IMP interfaces

On Wed, Mar 7, 2018 at 2:30 PM, Phil Budne wrote: > > >Can the IMP software and the H316 simulator talk TCP/IP to an ehernet > card? > > If we had TCP-era IMP code, one could, in theory, but as I recall the > structure of the TCP ARPAnet (net 10) address was that one octet was

Re: [Simh] IMP interfaces

> >Can the IMP software and the H316 simulator talk TCP/IP to an ehernet card? If we had TCP-era IMP code, one could, in theory, but as I recall the structure of the TCP ARPAnet (net 10) address was that one octet was the IMP number, and another the port on the IMP, which was severly limited

Re: [Simh] IMP interfaces

>Can the IMP software and the H316 simulator talk TCP/IP to an ehernet card? Well, the IMP software talks to one or more IMPs via a modem and an AT leased line. That's what IMPs do. Simh emulates the modem using a TCP connection. As others have pointed out, the original ARPANet didn't use

Re: [Simh] IMP interfaces

Robert Armstrong wrote: > that way you should be able to use the original IMP software which > already runs on the H316 emulation. My primary objective is connecting KA10 ITS to the internet. Can the IMP software and the H316 simulator talk TCP/IP to an ehernet card? Phil Budne wrote: > There

Re: [Simh] IMP interfaces

There are many reasons for supporting "1822" (the host-to-imp protocol) in SimH in a generic way: To speak to a simulated pre-TCP-era (aka NCP) IMP (or a simulated TCP-era IMP if that code becomes available) To speak to the TCP Internet on a simulated system that never had an Ethernet

Re: [Simh] IMP interfaces

>Presumably the Honeywell 516? In the case of simh it’s actually the H316 simulator. This already contains a fully functional IMP simulator that was written a few years ago. I hope people know that. Hopefully you will make your KA host interface card talk to the 1822 card

Re: [Simh] IMP interfaces

>>> Are there any other SIMH machines that could benefit from having an >>> IMP attached? > > Bob Eager wrote: >> Presumably the Honeywell 516? The 516 ran the BBN IMP software. I'm talking about making an IMP avaiable to a host machine such as a PDP-10. To connect a host to the network

Re: [Simh] IMP interfaces

2018-03-07 11:24 GMT+01:00 Bob Eager : > On Wed, 07 Mar 2018 10:01:08 + > Lars Brinkhoff wrote: > > > Hello, > > > > I have started writing an IMP interface as used with the MIT-AI/ML/MC > > KA10 and KL10 machines. (MIT-DMS used another interface created by

Re: [Simh] IMP interfaces

On Wed, 07 Mar 2018 10:01:08 + Lars Brinkhoff wrote: > Hello, > > I have started writing an IMP interface as used with the MIT-AI/ML/MC > KA10 and KL10 machines. (MIT-DMS used another interface created by > Bob Metcalfe.) I'm looking to add this to Rich Cornwell's KA10 >

[Simh] IMP interfaces

Hello, I have started writing an IMP interface as used with the MIT-AI/ML/MC KA10 and KL10 machines. (MIT-DMS used another interface created by Bob Metcalfe.) I'm looking to add this to Rich Cornwell's KA10 simulator which isn't yet ready to merge into mainline SIMH. I'm hoping that the