Lars Brinkhoff wrote:
> I have started writing an IMP interface as used with the MIT-AI/ML/MC
> KA10 and KL10 machines.
Making good progress on this. My primary goal is to use it for TCP/IP.
(The Arpanet, and the IMPs, switched to IP in 1983 and kept running
until 1990.)
But if someone wants to
Timothe Litt wrote:
> KL10 - AN10 - I/O bus interface to the IMP for 1080/1090/1091
Drawings for the AN10:
http://bitsavers.informatik.uni-stuttgart.de/pdf/dec/pdp10/periph/MP00326_AN10_Arpanet_Interface_Engineering_Drawings_Jul77.pdf
> KS10 - AN22 (Yet another KMC11 + line card device)? This may
DEC produced IMP interfaces for the -10/20. They typically were bundled
into the T systems (e.g. 1090T), but could be bought separately. DEC
provided drivers & utilities for TOPS-20, but not TOPS-10.
KL10 - AN10 - I/O bus interface to the IMP for 1080/1090/1091
AN20 - Same, for DECSY
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: GE-645
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 eith
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 one
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 IMP number, and ano
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
> the IMP number, a
> >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 (four
>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&T
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
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 ar
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 interfac
>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
emulatio
>>> 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 (ARPAnet
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
> > Bob Metcalfe.) I'm looking to
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
> simulator which is
16 matches
Mail list logo