[GreenKeys] Text to Baudot

Fri May 12 22:04:29 EDT 2017

Whoops, one more thing on CBM TTL to RS-232..

CBM did produce a proper RS-232 user port adapter, model "VIC-1011A" for
the C-64 / VIC, but it was quite expensive, useless for 95% of all
end-users and didn't sell well. Today they are very uncommon, but if you
have one, it should work just fine.

Anyway, if I had to do it again, I'd just build one of the modules right
into the case.

On Fri, May 12, 2017 at 8:47 PM, drlegendre . <drlegendre at gmail.com> wrote:

> Jordan, All who might have interest..
>
> The software / hardware offer is open to anyone who might be interested in
> trying it. Like I said, all the 'hard' work is done, it's pretty much a
> turn-key operation at this point to get it working (assuming you have
> rs-232 to 60ma loop conv.). I built one of the Aetheric converters, and
> while I've always used it with my rs-232 level converter, it seems that it
> should work just fine off the 'bare' CBM TTL-level port. Either way, it's
> good to have the TTL / 232 converter, as it opens up other possibilities.
>
> There are two ways to do the proper 232 port on the CBM: 1) Use a complete
> module (under $5) and build it right into the computer case -or- 2) Use a
> MAX232 chip (under $1) and build a converter out of an old VIC-1600 300
> baud modem. You literally strip everything off the modem board, and only
> use the board itself and the port connector as a platform to build the
> circuit. I went the latter route, as I didn't know the complete modules
> were so cheap & easy!
>
> As for the software, well, LOAD and RUN it.. that's it. Also feel free to
> strip out the ASC2BAUD and BAUD2ASC routines for your own projects, or just
> use them as guides. That said, I'm +sure+ they could be improved, shrunk,
> sped up, etc. I only did the ASM version to see if I could (I needed to
> finally learn some ASM), it offers no advantages other than being somewhat
> smaller and faster - though the speed is of no issue at 45.45 baud! Oh, and
> the ASM uses a very neat 'typewriter' custom char. set built by a fellow
> named Rudi.
>
> Just send me an off-list mail and I'll forward you the software. If you
> want 232 modules or chips, I have +plenty+ more than I will +ever+ use! So
> just ask, they are dirt-cheap.. and I'd like to see them used.
>
> On Fri, May 12, 2017 at 12:52 PM, Jordan Spencer Cunningham <js at cunni.co>
> wrote:
>
>> I have nine C64s here in my basement, most of them working in some
>> fashion. One of the many projects I have on my plate is to frankenstein
>> them all to a few 100% working, physically complete C64s. While I've also
>> been interested in building a text to Baudot interface (and vice versa--
>> I'm also working on joining the i-Telex network), mine has been focused on
>> interfacing with modern technology for the purpose of wider capabilities.
>> That being said, I'd be extremely interested to get more information on
>> your software and wiring a C64 up to a current loop. I have the military
>> labeled M15 and M19; getting them talking to one of my Commodores would
>> perhaps be among the chief accomplishments in my life.
>>
>> --Jordan
>>
>> On Fri, May 12, 2017 at 4:42 AM, drlegendre . <drlegendre at gmail.com>
>> wrote:
>>
>>> Kevin,
>>>
>>> The user port on the C-64 or the VIC-20 implements a simple RS-232
>>> interface. In terms of protocol, it's fairly well compatible - but it
>>> doesn't implement the proper +/-12V levels of true RS-232. In some cases,
>>> this doesn't many any difference, but to have a level-correct RS-232 you
>>> need one of the TTL to 232 adapter modules. I have several here, if you
>>> need one - they are very cheap.
>>>
>>> Once you have a functional serial port, it's as easy as connecting the
>>> port to your 20/60ma current-loop adapter, and then onto the TTY. My
>>> software will support 2-way, full duplex chat between the CBM and the M15,
>>> with full support for special chars, bell, cr, lf etc. You can also spool
>>> text files from the CBM to the M15, like a printer driver.
>>>
>>> On Thu, May 11, 2017 at 8:41 AM, Kevin DeWitt <kevin.dewitt at gmail.com>
>>> wrote:
>>>
>>>> Now that sounds like fun.
>>>>
>>>> I still have the VIC-20 I bought when they first came out. A few years
>>>> back a fellow HAM gave me his old BBS equipment (2-C64's, 2-1541 drives, an
>>>> SX-64 portable and all the associated software) so I have no shortage of
>>>> machines for testing. Over the winter the kids (10 and 15) expressed
>>>> interest in programming so out came the machines and we ran through some
>>>> BASIC stuff (pun intended).
>>>>
>>>> Since the teletypes have revived the old "bug" I was thinking it would
>>>> be neat to build an interface for the one (or a few of) the old Commodores.
>>>> Would the port be able to drive a polar relay? I bet it will take less time
>>>> now to type in several pages of code.
>>>>
>>>> Kevin
>>>>
>>>> On Wed, May 10, 2017 at 9:25 PM, drlegendre . <drlegendre at gmail.com>
>>>> wrote:
>>>>
>>>>> Not sure if it's worth mentioning, but I also wrote an (PET) ASCII <->
>>>>> 5-line baudot program for C-64, which should also run on VIC & Pet. BASIC
>>>>> source is available, but there's also a pure-ML version for C-64 available
>>>>> as a binary. If you are a real C-64 nerd, I might even share the source
>>>>> with you.. =P
>>>>>
>>>>> My software is designed to drive an M15 etc. from a C-64, but the
>>>>> ASCII / baudot routines can easily be transplanted into your software. It
>>>>> uses a simple lookup table (array), populated from DATA statements.
>>>>>
>>>>> On Wed, May 10, 2017 at 2:11 PM, Jeffrey D Angus <jdangus at att.net>
>>>>> wrote:
>>>>>
>>>>>> And of course, there's HAL Communications DSRTTY as well.
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Jeff-1.0
>>>>>> wa6fwi
>>>>>> http://www.foxsmercantile.com
>>>>>>
>>>>>>
>>>>>> ---
>>>>>> This email has been checked for viruses by AVG.
>>>>>> http://www.avg.com
>>>>>>
>>>>>>
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