VAX 730 was Re: Self modifying code, lambda calculus - Re: ENIAC programming

2015-09-18 Thread Don North
On 9/18/2015 10:15 PM, tony duell wrote: Simple answer. The control store functionality had to fit in the available space on one hex sized card, and 16K density DRAM was the only option. Allocating additional space to use 4K or 1K SRAM would have pushed the CPU design to an additional board, whic

RE: Self modifying code, lambda calculus - Re: ENIAC programming

2015-09-18 Thread tony duell
> > > Simple answer. The control store functionality had to fit in the available > space > on one hex > sized card, and 16K density DRAM was the only option. Allocating additional > space to use > 4K or 1K SRAM would have pushed the CPU design to an additional board, which > was not > a design

Re: Self modifying code, lambda calculus - Re: ENIAC programming

2015-09-18 Thread Don North
On 9/18/2015 9:51 PM, tony duell wrote: The VAX-11/730 would have to have the microcode on TU58, as that is the console media. Quite possible that it actually do load the microcode from there at power up. I've heard that those machine were slow in so many ways... :-) The 11/730 has no microcode

RE: Self modifying code, lambda calculus - Re: ENIAC programming

2015-09-18 Thread tony duell
> The VAX-11/730 would have to have the microcode on TU58, as that is the > console media. Quite possible that it actually do load the microcode > from there at power up. I've heard that those machine were slow in so > many ways... :-) The 11/730 has no microcode ROM as far as I can see. However p

Re: DEC RX8-E, M8316, M8317, M8365, M8366

2015-09-18 Thread Paul Anderson
Update- M8316- $175 M8365 $100 LC8-E LA180 interface Good to hack for output device M8366 $100 LQP8-E LQP01 printer interface, also good for hacking Both printer interfaces are probably NOS, still in the dec box, if my workers didn't move them again... On Thu, Sep 17, 2015 at 10:32 PM,

Re: IBM 026

2015-09-18 Thread Chuck Guzis
On 09/18/2015 06:33 PM, Don North wrote: Lucky it is not just scrap metal then, it is a probably restorable 026 keypunch, of which very few still exist. There had to be many more 029s than 026s made. Yet I've never seen a lot of them offered. I'd much rather use an 029 than an 026--given t

Re: IBM 026

2015-09-18 Thread Able Baker
Why not? How do you know how many still exist?It may be restorable or maybe not.If not, then what is its value?If it is just a display item, then you have to really want to look at it and admire its inherent 'beauty'.If it is restored, then you probably want to exercise its functionality.Maybe p

Re: Self modifying code, lambda calculus - Re: ENIAC programming

2015-09-18 Thread Jon Elson
On 09/18/2015 04:42 PM, Johnny Billquist wrote: The normal WCS option for the 11/780 was an option. Not everyone had it. Were there another option with some WCS that actually everybody had? I don't recall clearly whether our 780 (bought about 1980?) came with a small WCS or no WCS. I do rem

Re: IBM 026

2015-09-18 Thread wulfman
rule #1 Dont feed the trolls. On 9/18/2015 6:33 PM, Don North wrote: > Lucky it is not just scrap metal then, it is a probably restorable 026 > keypunch, of which very few still exist. > > By your criteria any classic computer is worth well less than $99, as > the metal content is much smaller th

Re: IBM 026

2015-09-18 Thread Don North
Lucky it is not just scrap metal then, it is a probably restorable 026 keypunch, of which very few still exist. By your criteria any classic computer is worth well less than $99, as the metal content is much smaller than an 026. And then any car from the 50s or 60s is only worth a few hundred

Re: IBM 026

2015-09-18 Thread Todd Goodman
* Noel Chiappa [150918 07:25]: > > Well, here's an 029 (not quite what the OP was looking for, but good > > enough for you all, I expect) for a not insane amount of money: > > http://www.ebay.com/itm/281796720725 > > So I see this sold - anyone know who got it? > > Noel Yes.

Re: OT: x86 machine code [Was: Re: Self modifying code, lambda calculus - Re: ENIAC programming]

2015-09-18 Thread Antonio Carlini
On 18/09/15 14:31, Mouse wrote: | | The single exception is that we will not publish the list of "system | killers" outside of Digital. All questions about "system killers", | even ones asking if there are any, will be answered "No Comment". The | reason for this is to protect cust

Re: SIMH PDP-8 question

2015-09-18 Thread Don North
On 9/18/2015 7:08 AM, Vincent Slyngstad wrote: From: Charles: Thursday, September 17, 2015 6:46 PM Anyway, I'd like to do the same thing in SIMH (get the text file into Focal and then save it as a Focal program). Is there any way to do this with SIMH? Can I assign the text file to a paper tape

Re: Self modifying code, lambda calculus - Re: ENIAC programming

2015-09-18 Thread Johnny Billquist
On 2015-09-18 18:21, Eric Smith wrote: On Fri, Sep 18, 2015 at 7:45 AM, tony duell wrote: The 11/780 has a PDP11 to load the microcode (I think) but the 11/730 makes do with an 8085. After booting I think that handles the console port still. Most of the 11/780 microcode is in bipolar PROM. T

Re: Self modifying code, lambda calculus - Re: ENIAC programming

2015-09-18 Thread Johnny Billquist
On 2015-09-18 18:21, Jon Elson wrote: On 09/18/2015 08:45 AM, tony duell wrote: As far as I know, the VAX11/730 (There is one next to me waiting for me to have time to restore it) has the microcode entirely in RAM. Classic PERQs (3 in the next room) have The PDP-11 console loads the microcode f

Re: Self modifying code, lambda calculus - Re: ENIAC programming

2015-09-18 Thread Johnny Billquist
On 2015-09-18 15:45, tony duell wrote: As far as I know, the VAX11/730 (There is one next to me waiting for me to have time to restore it) has the microcode entirely in RAM. Classic PERQs (3 in the next room) have The PDP-11 console loads the microcode from disk then mostly just sits there l

Re: Self modifying code, lambda calculus - Re: ENIAC programming

2015-09-18 Thread Johnny Billquist
On 2015-09-18 15:33, tony duell wrote: Are there any computers that do let you put microcode into RAM now-days. "Now-days"? There are some that do that, some of which are still in operational shape. Some VAXen, in particular, have something called "writable control store", which is essentia

Re: ISO 800-3827-10A_SunOS_Reference_Manual, part one

2015-09-18 Thread Al Kossow
On 9/18/15 1:52 PM, Josh Dersch wrote: On Fri, Sep 18, 2015 at 1:48 PM, Al Kossow wrote: On 9/18/15 1:46 PM, Jason T wrote: On Fri, Sep 18, 2015 at 3:43 PM, Al Kossow wrote: great timing! the rest of the set is under http://bitsavers.org/pdf/sun/sunos/4.1 Good deal. I don't know if I

Re: ISO 800-3827-10A_SunOS_Reference_Manual, part one

2015-09-18 Thread Jason T
On Fri, Sep 18, 2015 at 3:52 PM, Josh Dersch wrote: > I need to check my shelves for specifics, but I have a lot of SunOS > documentation for early releases (1.0-3.0 or so) -- I can scan it if you > don't already have it in the queue... AFAIK I have nothing pre-4.0 here.

Re: ISO 800-3827-10A_SunOS_Reference_Manual, part one

2015-09-18 Thread Josh Dersch
On Fri, Sep 18, 2015 at 1:48 PM, Al Kossow wrote: > On 9/18/15 1:46 PM, Jason T wrote: > >> On Fri, Sep 18, 2015 at 3:43 PM, Al Kossow wrote: >> >>> great timing! >>> the rest of the set is under http://bitsavers.org/pdf/sun/sunos/4.1 >>> >> >> Good deal. I don't know if I have the full set or

Re: ISO 800-3827-10A_SunOS_Reference_Manual, part one

2015-09-18 Thread Al Kossow
On 9/18/15 1:46 PM, Jason T wrote: On Fri, Sep 18, 2015 at 3:43 PM, Al Kossow wrote: great timing! the rest of the set is under http://bitsavers.org/pdf/sun/sunos/4.1 Good deal. I don't know if I have the full set or not - I suspect not. I was given many boxes of Sun binders and I'm slowly

Re: ISO 800-3827-10A_SunOS_Reference_Manual, part one

2015-09-18 Thread Jason T
On Fri, Sep 18, 2015 at 3:43 PM, Al Kossow wrote: > great timing! > the rest of the set is under http://bitsavers.org/pdf/sun/sunos/4.1 Good deal. I don't know if I have the full set or not - I suspect not. I was given many boxes of Sun binders and I'm slowly working through them, using your na

Re: ISO 800-3827-10A_SunOS_Reference_Manual, part one

2015-09-18 Thread Al Kossow
On 9/18/15 1:40 PM, Jason T wrote: On Fri, Sep 18, 2015 at 12:36 PM, Al Kossow wrote: Someone asked about uploading the SunOS 4.1 docubox I had scanned, so I finally got around to doing that today, but discovered that I never scanned the part 1, just the system calls of 800-3827. I suspect that

Re: ISO 800-3827-10A_SunOS_Reference_Manual, part one

2015-09-18 Thread Jason T
On Fri, Sep 18, 2015 at 12:36 PM, Al Kossow wrote: > Someone asked about uploading the SunOS 4.1 docubox I had scanned, so I > finally > got around to doing that today, but discovered that I never scanned the part > 1, > just the system calls of 800-3827. I suspect that I never had it. So if > som

Re: OT: x86 machine code

2015-09-18 Thread Liam Proven
On 18 September 2015 at 20:00, Lars Brinkhoff wrote: > No, it was not Crusoe. I'm fairly sure it was VIA, and less sure it was > the C3. Maybe Cyrix? Whatever was current technology around 2002 I > guess. > > I remember reading the rumour that the RISC instruction set was > accessible, and I co

Re: Backups [was Re: Is tape dead?]

2015-09-18 Thread Liam Proven
On 18 September 2015 at 19:10, Dave G4UGM wrote: > But you do use a browser and all of those have holes... True, but they do on any OS. There are far fewer 'sploits for OS X or for Linux than for Windows (e.g. the famed WMF decoder one) -- andf by avoiding IE or anything that embeds or wraps

Re: OT: x86 machine code

2015-09-18 Thread Chuck Guzis
On 09/18/2015 11:00 AM, Lars Brinkhoff wrote: I would love to provide a proper citation, but I searched the net and couldn't find anything to back this up. Too bad--I've got a couple of C3 systems here that might be fun to experiment with... (very common processor to find on older thin client

Re: Self modifying code, lambda calculus - Re: ENIAC programming

2015-09-18 Thread ben
On 9/18/2015 7:33 AM, tony duell wrote: Are there any computers that do let you put microcode into RAM now-days. "Now-days"? There are some that do that, some of which are still in operational shape. Some VAXen, in particular, have something called "writable control store", which is essenti

RE: IBM 026

2015-09-18 Thread Dave G4UGM
It shows one bid > -Original Message- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Able Baker > Sent: 18 September 2015 16:38 > To: General Discussion: On-Topic and Off-Topic Posts > > Subject: Re: IBM 026 > > I bet there were no bids and the seller took it off

RE: IBM 026

2015-09-18 Thread Dave G4UGM
It shows one bid > -Original Message- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Able Baker > Sent: 18 September 2015 16:38 > To: General Discussion: On-Topic and Off-Topic Posts > > Subject: Re: IBM 026 > > I bet there were no bids and the seller took it off the

Re: OT: x86 machine code

2015-09-18 Thread Lars Brinkhoff
Liam Proven writes: > On 18 September 2015 at 13:35, Lars Brinkhoff wrote: >> I believe the VIA C3 had an undocumented feature to allow executing >> the underlying RISC instructions. > > [[Citation needed]] > > I've never heard of anything like this. Are you perhaps thinking of > the Crusoe famil

ISO 800-3827-10A_SunOS_Reference_Manual, part one

2015-09-18 Thread Al Kossow
Someone asked about uploading the SunOS 4.1 docubox I had scanned, so I finally got around to doing that today, but discovered that I never scanned the part 1, just the system calls of 800-3827. I suspect that I never had it. So if someone has that or a Solaris 1.x docubox a scan would be helpful.

Re: IBM 026

2015-09-18 Thread jwsmobile
On 9/18/2015 9:09 AM, Pontus Pihlgren wrote: Well it sold for 899.99$ with one bidder..so it had that value to someone. Watch the auction seller's feedback. If you are lucky, the buyer will leave feedback and you can see some more info about the buyer at that point. /P On Fri, Sep 18, 2015

Re: Backups [was Re: Is tape dead?]

2015-09-18 Thread Chuck Guzis
On 09/18/2015 09:49 AM, Fred Cisin wrote: On Fri, 18 Sep 2015, Liam Proven wrote: However, Cryptolocker et al spread by fooling users into running something they shouldn't run. I'm sorry, but you got suckered. Absolutely. I now think that it was a "We're Adobe, click here to update Flash Playe

Re: OT: x86 machine code [Was: Re: Self modifying code, lambda calculus - Re: ENIAC programming]

2015-09-18 Thread Jecel Assumpcao Jr.
Just a quick history of x86 implementation styles (from memory, so don't take this very seriously): 8086: Intel's first pipeline, with separate Fetch and Execution units iAPX286: borrowed some ideas from iAPX432's protection model, but I don't know any implementation details 386: traditional CIS

RE: Backups [was Re: Is tape dead?]

2015-09-18 Thread Dave G4UGM
> -Original Message- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Liam > Proven > Sent: 18 September 2015 17:47 > To: General Discussion: On-Topic and Off-Topic Posts > > Subject: Re: Backups [was Re: Is tape dead?] > > On 18 September 2015 at 18:25, Dave G4UGM >

Re: Backups [was Re: Is tape dead?]

2015-09-18 Thread Liam Proven
On 18 September 2015 at 18:49, Fred Cisin wrote: > Absolutely. > I now think that it was a "We're Adobe, click here to update Flash Player" > or maybe "Java update" I can see how one of those, done well, might fool most of us. I am not one of those daredevil ascetics who runs Windows without anti

Re: Backups [was Re: Is tape dead?]

2015-09-18 Thread Fred Cisin
On Fri, 18 Sep 2015, Liam Proven wrote: However, Cryptolocker et al spread by fooling users into running something they shouldn't run. I'm sorry, but you got suckered. Absolutely. I now think that it was a "We're Adobe, click here to update Flash Player" or maybe "Java update" But, I never got

Re: Backups [was Re: Is tape dead?]

2015-09-18 Thread Liam Proven
On 18 September 2015 at 18:25, Dave G4UGM wrote: > Are you 100 % sure you don't need anti-malware... > > http://appleinsider.com/articles/15/08/05/apple-to-patch-actively-exploited-privilege-escalation-bug-in-os-x-10105---report > > from what I have seen the fix from Apple isn't a fix... > > http:

RE: Backups [was Re: Is tape dead?]

2015-09-18 Thread Dave G4UGM
Are you 100 % sure you don't need anti-malware... http://appleinsider.com/articles/15/08/05/apple-to-patch-actively-exploited-privilege-escalation-bug-in-os-x-10105---report from what I have seen the fix from Apple isn't a fix... http://www.theregister.co.uk/2015/07/22/os_x_root_hole/ but to ru

Re: Self modifying code, lambda calculus - Re: ENIAC programming

2015-09-18 Thread Jon Elson
On 09/18/2015 08:45 AM, tony duell wrote: As far as I know, the VAX11/730 (There is one next to me waiting for me to have time to restore it) has the microcode entirely in RAM. Classic PERQs (3 in the next room) have The PDP-11 console loads the microcode from disk then mostly just sits there

Re: Self modifying code, lambda calculus - Re: ENIAC programming

2015-09-18 Thread Eric Smith
On Fri, Sep 18, 2015 at 7:45 AM, tony duell wrote: > The 11/780 has a PDP11 to load the microcode (I think) but the 11/730 makes > do with an > 8085. After booting I think that handles the console port still. Most of the 11/780 microcode is in bipolar PROM. There's a small patch area which is lo

Re: Backups [was Re: Is tape dead?]

2015-09-18 Thread Liam Proven
On 18 September 2015 at 16:55, Fred Cisin wrote: > CryptoLocker has been around for a year. I don't think that McAfee nor AVG > see it. "Well, it's not a VIRUS, . . ." Former AVG employee here. I quit; this is not an official statement. CryptoLocker/CryptoWall/etc are *not* a single program.

Re: Self modifying code, lambda calculus - Re: ENIAC programming

2015-09-18 Thread Jon Elson
On 09/17/2015 11:19 PM, Guy Sotomayor wrote: On 9/17/15 8:55 PM, Jon Elson wrote: I think the later X86 machines have a tiny block of patch microcode that is available to the OS to put special routines into. Certainly not Intel CPUs. All of the microcode patches are loaded via special i

Re: IBM 026

2015-09-18 Thread Pontus Pihlgren
Well it sold for 899.99$ with one bidder..so it had that value to someone. /P On Fri, Sep 18, 2015 at 03:38:02PM +, Able Baker wrote: > I bet there were no bids and the seller took it off the auction.Probably was > too embarrassed to admit what I told them that it had virtually no value (or

Re: IBM 026

2015-09-18 Thread Able Baker
I bet there were no bids and the seller took it off the auction.Probably was too embarrassed to admit what I told them that it had virtually no value (or very little)in a non-working condition.  You might see it offered again at   much lower price. From: Noel Chiappa To: cctalk@classiccmp

re: Backups [was Re: Is tape dead?]

2015-09-18 Thread Fred Cisin
On Fri, 18 Sep 2015, John Foust wrote: As to why your antivirus didn't see it... there's always a few days before the latest infection mechanisms are documented and added to the AV updates. CryptoLocker has been around for a year. I don't think that McAfee nor AVG see it. "Well, it's not a V

RE: Self modifying code, lambda calculus - Re: ENIAC programming

2015-09-18 Thread Fred Cisin
"Self modifying code may seem like a neat idea. But, it will turn around and byte you in the arse. Maybe not now, but soon, and for the rest of your life."

Re: SIMH PDP-8 question

2015-09-18 Thread Vincent Slyngstad
From: Charles: Thursday, September 17, 2015 6:46 PM Anyway, I'd like to do the same thing in SIMH (get the text file into Focal and then save it as a Focal program). Is there any way to do this with SIMH? Can I assign the text file to a paper tape reader, for example? This should work fairly e

re: Backups [was Re: Is tape dead?]

2015-09-18 Thread John Foust
At 01:01 PM 9/16/2015, Fred Cisin wrote: >But, those still require a gullibility error on the part of the user, don't >they? Do the ads actually load and run the ransomware, or just present the >fraudulent upgrade offer to bring it in? The bad guys are slipping silent-install vulnerability expl

RE: Self modifying code, lambda calculus - Re: ENIAC programming

2015-09-18 Thread tony duell
> > > > As far as I know, the VAX11/730 (There is one next to me waiting for me to > > have time > > to restore it) has the microcode entirely in RAM. Classic PERQs (3 in the > > next room) have > > The PDP-11 console loads the microcode from disk then mostly just sits there > looking pretty whi

Re: Self modifying code, lambda calculus - Re: ENIAC programming

2015-09-18 Thread Diane Bruce
On Fri, Sep 18, 2015 at 01:33:05PM +, tony duell wrote: > > > > > Are there any computers that do let you put microcode into RAM > > > now-days. > > > > "Now-days"? There are some that do that, some of which are still in > > operational shape. Some VAXen, in particular, have something calle

RE: Self modifying code, lambda calculus - Re: ENIAC programming

2015-09-18 Thread Dave G4UGM
> -Original Message- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of tony duell > Sent: 18 September 2015 14:33 > To: General Discussion: On-Topic and Off-Topic Posts > > Subject: RE: Self modifying code, lambda calculus - Re: ENIAC programming > > > > > > Are there any

Re: OT: x86 machine code [Was: Re: Self modifying code, lambda calculus - Re: ENIAC programming]

2015-09-18 Thread Mouse
>> Such as every x86 processor since, what, the Pentium? They're all >> RISC cores (designed for and) running an x86 emulator. > I've been told this more than a few times and read it in various > places. It always make me wonder, could we not allow a mode in > modern Intel processors that lets u

RE: Self modifying code, lambda calculus - Re: ENIAC programming

2015-09-18 Thread tony duell
> > > Are there any computers that do let you put microcode into RAM > > now-days. > > "Now-days"? There are some that do that, some of which are still in > operational shape. Some VAXen, in particular, have something called > "writable control store", which is essentially microcode RAM. As fa

RE: HP-41 User Library Programs and Documentation.

2015-09-18 Thread Rik Bos
Spoken for. -Rik > -Oorspronkelijk bericht- > Van: cctalk [mailto:cctalk-boun...@classiccmp.org] Namens Rik Bos > Verzonden: vrijdag 18 september 2015 13:03 > Aan: General Discussion: On-Topic and Off-Topic Posts > Onderwerp: HP-41 User Library Programs and Documentation. > > For the cos

Re: OT: x86 machine code [Was: Re: Self modifying code, lambda calculus - Re: ENIAC programming]

2015-09-18 Thread Toby Thain
On 2015-09-18 7:06 AM, Pontus Pihlgren wrote: On Fri, Sep 18, 2015 at 06:58:24AM -0400, Mouse wrote: You have a lot of byte code virtual machines out there. Such as every x86 processor since, what, the Pentium? They're all RISC cores (designed for and) running an x86 emulator. I've been

RE: OT: x86 machine code [Was: Re: Self modifying code, lambda calculus - Re: ENIAC programming]

2015-09-18 Thread Dave G4UGM
> -Original Message- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Liam > Proven > Sent: 18 September 2015 13:23 > To: General Discussion: On-Topic and Off-Topic Posts > > Subject: Re: OT: x86 machine code [Was: Re: Self modifying code, lambda > calculus - Re: ENIAC p

Re: OT: x86 machine code [Was: Re: Self modifying code, lambda calculus - Re: ENIAC programming]

2015-09-18 Thread Liam Proven
On 18 September 2015 at 13:35, Lars Brinkhoff wrote: > I believe the VIA C3 had an undocumented feature to allow executing the > underlying RISC instructions. [[Citation needed]] I've never heard of anything like this. Are you perhaps thinking of the Crusoe family chips? -- Liam Proven • Prof

Re: OT: x86 machine code [Was: Re: Self modifying code, lambda calculus - Re: ENIAC programming]

2015-09-18 Thread Liam Proven
On 18 September 2015 at 13:06, Pontus Pihlgren wrote: > I've been told this more than a few times and read it in various places. > It always make me wonder, could we not allow a mode in modern Intel > processors that lets us bypass the x86 code emulation/translation and > run "directly on the meta

Re: OT: x86 machine code [Was: Re: Self modifying code, lambda calculus - Re: ENIAC programming]

2015-09-18 Thread Lars Brinkhoff
Pontus Pihlgren writes: > On Fri, Sep 18, 2015 at 06:58:24AM -0400, Mouse wrote: >> Such as every x86 processor since, what, the Pentium? They're all >> RISC cores (designed for and) running an x86 emulator. > > I've been told this more than a few times and read it in various places. > It always

Re: IBM 026

2015-09-18 Thread Noel Chiappa
> Well, here's an 029 (not quite what the OP was looking for, but good > enough for you all, I expect) for a not insane amount of money: > http://www.ebay.com/itm/281796720725 So I see this sold - anyone know who got it? Noel

OT: x86 machine code [Was: Re: Self modifying code, lambda calculus - Re: ENIAC programming]

2015-09-18 Thread Pontus Pihlgren
On Fri, Sep 18, 2015 at 06:58:24AM -0400, Mouse wrote: > > > You have a lot of byte code virtual machines out there. > > Such as every x86 processor since, what, the Pentium? They're all RISC > cores (designed for and) running an x86 emulator. > I've been told this more than a few times and re

HP-41 User Library Programs and Documentation.

2015-09-18 Thread Rik Bos
For the cost of shipment, the below is surging for a new owner. About nine books with program cards containing programs about: -Control -Electrical Engineering -Business -81XX Processors assembly conversion -Math and calculus -Graphics and p

Re: Self modifying code, lambda calculus - Re: ENIAC programming

2015-09-18 Thread Mouse
> Are there any computers that do let you put microcode into RAM > now-days. "Now-days"? There are some that do that, some of which are still in operational shape. Some VAXen, in particular, have something called "writable control store", which is essentially microcode RAM. > You have a lot of

RE: SIMH PDP-8 question

2015-09-18 Thread Robert Jarratt
I have connected my Teletype Model 33 to the SIMH console via a DECserver 90M using reverse telnet. I *think* you can connect SIMH directly to a serial port now, if so that might be a simpler way. Regards Rob -Original Message- From: "Charles" Sent: ‎18/‎09/‎2015 02:46 To: "cctalk d