[Simh] Physical serial ports and SIMH

[Jörg Hoppe]

Hi,

just to ring the bell:
For the "DECbox", we made an 4x RS232 cape for the BeagleBone.
(www.blinkenbone.com/projects/decbox/160-decbox-about-the-beaglebone)
A friend made an online shop for it: see shop.hachti.de

regards
Joerg

Am 26.06.2013 23:28, schrieb Jordi Guillaumes i Pons:
> Perhaps you will want to consider one alternative to the Raspberry Pi:
>
> http://beagleboard.org/Products/BeagleBone%20Black
>
> I have got one. It is noticeabily faster than the pi (it clocks at 1GHz and uses a faster memory) and it does not need a SD card to boot (it has 2GB of on-board flash). I run debian wheezy in mine, and of course simh compiles without any problem once you have installed the dependencies. It comes with 5 UARTs and you can get a "cape" which gets you a standard RS232 port thru a D9 connector:
>
> http://circuitco.com/support/index.php?title=BeagleBone_RS232
>
> (I am not sure if you can stack several capes to use the other UARTs).
>
>
>
>
> El 26/06/2013, a les 21:41, Gregg Levine <gregg.drwho8 at gmail.com> va escriure:
>
>> On Wed, Jun 26, 2013 at 1:17 PM, Brian Knittel <brian at quarterbyte.com> wrote:
>>> Hi Gregg,
>>>
>>> This is an interest of mine too, for some personal and some work
>>> projects.
>>>
>>> The RPi usees 3.3V logic, so you have to use a level-shifting chip to
>>> use the hardware UARTs with RS-232 or RS-4xx. I've had an RS-232/RPi
>>> interface sitting on the dining room table half put-together for the
>>> last 2 months, so I can't tell you yet how well it works.
>>>
>>> Re: the USB to RS-232 interface options (most of which, AFAIK, use the
>>> FTDI chip built into a cable), I have read online accounts of
>>> instability in the Raspbian drivers -- the interfaces work for a few
>>> minutes or hours, and then stop working. If true, that makes them
>>> functionally worthless.
>>>
>>> I'd be very interested to hear if anyone has had this experience, or
>>> has found a USB/RS-232 cable/driver combo that has proven to be stable
>>> on the RPi.
>>>
>>> Brian
>>>
>>>
>>> On 26 Jun 2013 at 11:01, Gregg Levine wrote:
>>>
>>> Hello!
>>> Right now I am tooling up to try out an idea or two concerning the
>>> PDP-11 emulation. This is to be run on a Raspberry Pi running the
>>> latest release of their Raspberry specific Debian release. (Also fully
>>> updated and upgraded.)
>>>
>>> The device has the two USB connections ostensibly for a keyboard and
>>> mouse, but one gentleman I know managed to make use of the serial port
>>> function on one of them, and attached a USB to serial adapter to one
>>> of the connections. So obviously I can connect two adapters to the two
>>> ports there.
>>>
>>> But what about the serial port embedded on the GPIO connectors? Can I
>>> make use of that one?
>>>
>>> I know normally that SIMH emulates a chosen computer and only fairly
>>> recently with some of them do communicate with the outside world via
>>> Ethernet, but for what I'm planning and working on, it seems to be a
>>> good fit. Should it work I might be able to upscale the working
>>> programs to Mr Wilson's product running on an X86 board instead, or
>>> even an actual PDP-11 model.....
>>> -----
>>> Gregg C Levine gregg.drwho8 at gmail.com
>>> "This signature fought the Time Wars, time and again."
>>> -=-=-=-=-=-=-=-=-=-=-
>>> _| _| _|  Brian Knittel
>>> _| _| _|  Quarterbyte Systems, Inc.
>>> _| _| _|  Tel: 1-510-559-7930
>>> _| _| _|  http://www.quarterbyte.com
>>
>> Hello!
>> Interesting point. As it happens FTDI makes a module that adds things
>> to the based Raspberry Pi, here:
>> http://www.ftdichip.com/Products/Modules/RPi.htm they basically there
>> explain everything imaginable for the module itself. I suspect based
>> on what you've stated there's still some unstability in the drivers
>> that the modules are creating, and, ah, its supposed to be fixed using
>> the library they describe on an app note, and of course its available
>> for all forms of Linux.
>>
>> -----
>> Gregg C Levine gregg.drwho8 at gmail.com
>> "This signature fought the Time Wars, time and again."
>> _______________________________________________
>> Simh mailing list
>> Simh at trailing-edge.com
>> http://mailman.trailing-edge.com/mailman/listinfo/simh
>
> Jordi Guillaumes i Pons
> jg at jordi.guillaumes.name
> HECnet: BITXOV::JGUILLAUMES
>
>
>
>
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