[GreenKeys] Text to Baudot

Fri May 12 23:25:44 EDT 2017

In preparing to build the adapter for my VIC-20/C64/SX64, I discovered
something I had overlooked about my favorite TU, the AEA CP-1. It already
has a TTL port. The first step will be to get a few of the blue "side
connectors" from ebay and 5 pin TTL connectors from whomever sells them and
make some cables. Once those are going ok then I'll move on to the TTL to
RS232 gizmo. I was pretty tired today during my websearch, but I swear I
saw an iPad to ttl cable for $59, I'll look for it again later.

Kevin

On May 12, 2017 10:04 PM, "drlegendre ." <drlegendre at gmail.com> wrote:

> 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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