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by mike603
Fri Jan 17, 2020 2:16 pm
Forum: Advanced users
Topic: Dual Independent Keyboards
Replies: 0
Views: 136

Dual Independent Keyboards

... spawn both shells to their appropriate monitor and keyboard. I will be using this to connect to another 4b being used as a PDP-11 emulator running SIMH (https://github.com/simh/simh) that will be connected to a PiDP-11 front panel (https://obsolescence.wixsite.com/obsolescence/pidp-11). Thank you ...
by mayhem69
Thu Dec 26, 2019 12:00 pm
Forum: Beginners
Topic: Can RP read punched paper tape from 1969 somehow?
Replies: 21
Views: 862

Re: Can RP read punched paper tape from 1969 somehow?

... program - ie not really enough to do very much. Suspect it is a bit of a Friday afternoon response to the moon landings. To relate it to the Pi, SimH (which will run well on any Pi) has a Series 16 simulator. Chris K Chris, can you do this for me?
by cjketle
Tue Dec 24, 2019 5:17 pm
Forum: Beginners
Topic: Can RP read punched paper tape from 1969 somehow?
Replies: 21
Views: 862

Re: Can RP read punched paper tape from 1969 somehow?

... program - ie not really enough to do very much. Suspect it is a bit of a Friday afternoon response to the moon landings. To relate it to the Pi, SimH (which will run well on any Pi) has a Series 16 simulator. Chris K
by ejolson
Sat Dec 07, 2019 10:04 pm
Forum: General programming discussion
Topic: Tatami Pi Fun.
Replies: 302
Views: 20246

Re: Tatami Pi Fun.

... must surely run faster with a BARK than any other computer. To check whether there were regressions with the parallel code, I copied it to the SIMH PDP-11/70 emulator and obtained $ time ./queue Pr(1300)=10657 T(327600)=40 Lc=1 real 1:43.0 user 1:42.7 sys 0.1 $ time ./prune Pr(1300)=10657 T(327600)=40 ...
by pavelanni
Sat Nov 16, 2019 8:02 pm
Forum: Advanced users
Topic: Historic Unix R7 using SIMH
Replies: 21
Views: 7333

Re: Historic Unix R7 using SIMH

... still working on compiling stevie, but that's a separate thing. Also, BTW, I first tried your instructions on a Raspberry Pi, but now I'm running SIMH on my Linux laptop and your instructions were 100% applicable. It's so much fun to tinker with all these old Unixes! I've also tried BSD 2.9 and ...
by ejolson
Mon Nov 11, 2019 12:16 am
Forum: Advanced users
Topic: Historic Unix R7 using SIMH
Replies: 21
Views: 7333

Re: Historic Unix R7 using SIMH

... on both the emulator and on the host Linux machine. The tupload script is #!/bin/bash # tupload -- upload a file to Unix R7 running under SIMH def_win=0 help(){ cat <<END Upload a uue encoded file from a tmux session. Usage: $0 [options] <filename> Options: -t n Specify n as the tmux window ...
by ejolson
Sun Nov 10, 2019 11:26 pm
Forum: Advanced users
Topic: Historic Unix R7 using SIMH
Replies: 21
Views: 7333

Re: Historic Unix R7 using SIMH

Thanks for the great instructions, Eric! Almost everything worked as described with two minor corrections already mentioned by @pbnelson: 1) you must compile mkconf before running ` ./mkconf <simhconf` and 2) yes, the correct path for `mount` is `/etc/mount`. Everything else just worked! One questi...
by pavelanni
Sun Nov 10, 2019 8:41 pm
Forum: Advanced users
Topic: Historic Unix R7 using SIMH
Replies: 21
Views: 7333

Re: Historic Unix R7 using SIMH

Thanks for the great instructions, Eric! Almost everything worked as described with two minor corrections already mentioned by @pbnelson: 1) you must compile mkconf before running ` ./mkconf <simhconf` and 2) yes, the correct path for `mount` is `/etc/mount`. Everything else just worked! One questio...
by ejolson
Sat Nov 09, 2019 6:22 pm
Forum: General programming discussion
Topic: Liberation through Computer Literacy
Replies: 1673
Views: 116073

Re: Liberation through Computer Literacy

SIMH is a wonderful thing. I used it's Z80 emulator and CP/M operating system when developing my Z80 emulator for the Parallax Propeller. https://hackaday.com/2009/12/27/zilog-in-a-matchbox/ Pre-ANSI C. Oh what joy! I'm amazed ...
by Heater
Sat Nov 09, 2019 5:41 pm
Forum: General programming discussion
Topic: Liberation through Computer Literacy
Replies: 1673
Views: 116073

Re: Liberation through Computer Literacy

SIMH is a wonderful thing. I used it's Z80 emulator and CP/M operating system when developing my Z80 emulator for the Parallax Propeller. https://hackaday.com/2009/12/27/zilog-in-a-matchbox/ Pre-ANSI C. Oh what joy! I'm amazed ...
by jamesMPi
Wed Aug 14, 2019 9:25 pm
Forum: User groups and events
Topic: Anyone in Connecticut?
Replies: 2
Views: 5653

Re: Anyone in Connecticut?

old thread any PI users getting online at least

I want to to Open VMS

means I have to get SIMH running

also my Pi 3 B 1gb RAM seems to Freeze A LOT its less than week old
by epoch1970
Wed Jun 19, 2019 8:25 am
Forum: Advanced users
Topic: Cannot bridge eth0 and tap0 for SIMH - can't ping default gateway or beyond?
Replies: 4
Views: 442

Re: Cannot bridge eth0 and tap0 for SIMH - can't ping default gateway or beyond?

Bridge members do not have an IP config. You can remove the dhcpcd.conf entry for eth0 and reinstate denyinterfaces instead.
by alanfleming
Wed Jun 19, 2019 7:47 am
Forum: Advanced users
Topic: Cannot bridge eth0 and tap0 for SIMH - can't ping default gateway or beyond?
Replies: 4
Views: 442

Re: Cannot bridge eth0 and tap0 for SIMH - can't ping default gateway or beyond?

It wasn't the emulated machine. It was indeed the Pi. Take-away here is on choosing an IP address for an emulated machine in SIMH, do not configure it in the Pi Working config: /etc/network/interfaces: auto eth0 iface eth0 inet manual auto tap0 iface tap0 inet manual pre-up tunctl -t ...
by Ernst
Tue Jun 18, 2019 6:28 am
Forum: Advanced users
Topic: Cannot bridge eth0 and tap0 for SIMH - can't ping default gateway or beyond?
Replies: 4
Views: 442

Re: Cannot bridge eth0 and tap0 for SIMH - can't ping default gateway or beyond?

So br0 with an ip address, and nothing else with one. Routing table looks as you'd expect. The routing table would be very interesting but you did not show the contents. From the pi, I can ping both inside and outside the network. From an emulated machine attached to tap0, I can only ping devices o...
by epoch1970
Tue Jun 18, 2019 12:10 am
Forum: Advanced users
Topic: Cannot bridge eth0 and tap0 for SIMH - can't ping default gateway or beyond?
Replies: 4
Views: 442

Re: Cannot bridge eth0 and tap0 for SIMH - can't ping default gateway or beyond?

The bridge looks like it is working since eth is working. Could be user access rights on tap. Try -u root with tunctl. Using something less complicated than an emulator to validate that network setup could be an idea, also. (tunctl and ifconfig and brctl are antiquated by "ip" commands -although brc...
by alanfleming
Mon Jun 17, 2019 9:53 pm
Forum: Advanced users
Topic: Cannot bridge eth0 and tap0 for SIMH - can't ping default gateway or beyond?
Replies: 4
Views: 442

Cannot bridge eth0 and tap0 for SIMH - can't ping default gateway or beyond?

I'm trying to get bridged networking up and working on a copy of Stretch downloaded yesterday, for use with SIMH. My problem is that while I can ping by IP address anything locally, I can't ping my default gateway or anything beyond it. I've followed the up to date advice on ...
by ejolson
Fri May 10, 2019 5:23 pm
Forum: Other programming languages
Topic: ScriptBasic
Replies: 1398
Views: 86858

Re: ScriptBasic

... thing with Eclipse. For the record, the original binaries for HP2000 Time Shared Basic are freely available and will run on the Raspberry Pi under SIMH. It is, however, a bit difficult to boot as there are timing issues that weren't present in the physical hardware related to synchronizing the ...
by ejolson
Fri Apr 26, 2019 5:24 pm
Forum: Off topic discussion
Topic: Why Avoid BASIC on RPi?
Replies: 2312
Views: 149034

Re: Why Avoid BASIC on RPi?

... of the existing Basic Fibonacci codes could be adapted. Since VAX Basic is compiled, maybe it would still run fast enough on the Raspberry Pi in SIMH.
by ejolson
Wed Apr 24, 2019 2:50 pm
Forum: Off topic discussion
Topic: Why Avoid BASIC on RPi?
Replies: 2312
Views: 149034

Re: Why Avoid BASIC on RPi?

... in the backups and you have to compile your own from the src directory to get proper timings. You can also run Unix R7 on the Raspberry Pi under SIMH following these instructions. Everything used is open source. If I'm not mistaken, the R7-compatible bc Fibonacci code still runs under GNU bc ...
by JQW
Mon Mar 18, 2019 11:37 am
Forum: Advanced users
Topic: EMULATION HELP REQUEST
Replies: 13
Views: 1427

Re: EMULATION HELP REQUEST

... maintained anymore, so NAT is unlikely to appear in the future. However I had success using slirp instead, and it's very easy to get working in SimH. You just need to attach the network adaptor to the NAT: device, e.g. attach xu nat: Substituting the relevant device name if necessary. SimH will ...
by wyan
Thu Feb 28, 2019 10:18 pm
Forum: General discussion
Topic: STICKY: Introduce yourself!
Replies: 3651
Views: 192184

Re: STICKY: Introduce yourself!

... done some fiddling with them in the past. After a long pause I've started to play with them again, with an interest in emulation of old micros and simh, and maybe learn some assembler. Also building a NAS, probably :) Cheers!
by JQW
Tue Feb 12, 2019 10:33 pm
Forum: Advanced users
Topic: EMULATION HELP REQUEST
Replies: 13
Views: 1427

Re: EMULATION HELP REQUEST

... address to this new network device. Then you need to configure your emulator to use the tap0 device, binding it to the newly created socket. With SimH the syntax is something like: attach xq vde:/tmp/switch1 depending on the network device name for the particular simulator being used. This will ...
by popeyeotaku
Tue Feb 12, 2019 3:51 pm
Forum: Advanced users
Topic: EMULATION HELP REQUEST
Replies: 13
Views: 1427

Re: EMULATION HELP REQUEST

I can use port forwarded terminal emulation in SimH, but not in KLH10 which is required by TOPS-20. KLH10 expects to be on a dedicated ethernet connections (TOPS-20 survived into the era of TCP/IP and ethernet cables; therefore, it implements these ...
by JQW
Mon Feb 11, 2019 8:45 pm
Forum: Advanced users
Topic: EMULATION HELP REQUEST
Replies: 13
Views: 1427

Re: EMULATION HELP REQUEST

... up elsewhere. If you just want to access a device remotely, then most simulators allow you to multiplex terminal devices via a telnet port. In the SimH PDP-10 emulator, for example, the ATTACH DZ {port} command will attach the DZ terminal multiplexer device to a relevant TCP port. I've not done ...
by JQW
Sat Feb 09, 2019 3:21 pm
Forum: Advanced users
Topic: EMULATION HELP REQUEST
Replies: 13
Views: 1427

Re: EMULATION HELP REQUEST

Both klh10 and SimH support the MIT Chaosnet adaptor of the PDP-10. This was an early network interface developed at MIT during the mid 1970s. SimH allows you to bind Choasnet to a UDP port - klh10 does the same, but also allows ...

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