Re: [Freedos-user] USB

2016-04-24 Thread TJ Edmister 
On Sat, 23 Apr 2016 21:30:03 -0400, Ralf Quint   
wrote:

> On 4/23/2016 6:53 PM, Dale E Sterner wrote:
>> The copy command is limited to what you set the mode command to.
>> FREEDOS lets you set the baud very high but other dos's and
>> even windows has 9600 baud as the upper limit, well below
>> the uarts top speed.
>> If I type copy filename.prn com1: in any other dos besides FREEDOS
>> its top transmission speed is 9600. Any graphics file would take a few
>> minutes at that speed. Text file are ok at 9600 but pictures take
>> forever.
>> Terminal software like xtalk only send text files at high speeds.
>> For photos you need the dos copy command.
> Sorry, but all of this is NOT correct. Once again, nothing in DOS limits
> how high you set the UART speed

No, he's right. The MODE command under MS-DOS 6.0 as well as Win98 is  
arbitrarily limited to 19200bps. Doesn't mean that other programs can't  
set a higher speed themselves, but MODE cannot.

However under Windows 7 32-bit, the MODE command doesn't appear to have  
any limits. (I can set eg. MODE COM3: baud=66 and it will accept that,  
although this is not a "real" serial port)

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Re: [Freedos-user] USB

2016-04-24 Thread Ralf Quint 
On 4/24/2016 7:25 AM, Dale E Sterner wrote:
> I load my software on cf chips so I'm running pure dos
> no windows. When you read the help section it implies
> that 19200 exists but when you try the command
> it comes back not allowed. Even windows 7 has a
> 9600 limit. You can set it in the control panel to over 115000 baud
> then click ok and it sets it right back 9600. It won't
> keep the higher setting.
Then you have a problem with your system. I can set on all of my Windows 
machines that have a true serial port till easily 115k baud and it works 
that way just fine, do this currently for a lot of IoT work. I suspect 
you rather have a hardware issue that is preventing you from achieving a 
higher speed, maybe whatever serial to Bluetooth converter you are 
using. What is the actual UART in your system? On what port address?

Ralf

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Re: [Freedos-user] USB

2016-04-24 Thread dmccunney 
On Sun, Apr 24, 2016 at 10:25 AM, Dale E Sterner  wrote:
> I load my software on cf chips so I'm running pure dos
> no windows.

We know.  You've said so before.  Running from CF card is irrelevant
to the problem.

> When you read the help section it implies>
> that 19200 exists but when you try the command
> it comes back not allowed.

The reference I looked at said it might not work on all systems.
Yours is apparently one where it doesn't.

> Even windows 7 has a 9600 limit. You can set it in the control panel to over 
> 115000 baud
> then click ok and it sets it right back 9600. It won't keep the higher 
> setting.

As mentioned, copy over and use the FreeDOS mode command in place of
the MSDOS 7.1 version.

> cheers
> DS
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Re: [Freedos-user] USB

2016-04-24 Thread Dale E Sterner 
I load my software on cf chips so I'm running pure dos
no windows. When you read the help section it implies 
that 19200 exists but when you try the command
it comes back not allowed. Even windows 7 has a
9600 limit. You can set it in the control panel to over 115000 baud
then click ok and it sets it right back 9600. It won't
keep the higher setting.


cheers
DS



On Sat, 23 Apr 2016 21:31:21 -0400 dmccunney 
writes:
> On Sat, Apr 23, 2016 at 9:53 PM, Dale E Sterner  
> wrote:
> > The copy command is limited to what you set the mode command to.
> > FREEDOS lets you set the baud very high but other dos's and
> > even windows has 9600 baud as the upper limit, well below
> > the uarts top speed.
> 
> It's been too long since I ran a pure DOS setup, and I don't recall
> details.  But I was running MS/PC DOS since the 2.X days, and I 
> don't
> recall this ever being a problem.
> 
> MODE COM BAUD=19 *doesn't* set the baud rate to 19.2kb?
> 
> If MSDOS 7.1's mode command won't let you set a baud rate beyond 
> 9600,
> don't use it.  Copy over the FreeDOS mode command, and use it 
> instead.
> I know no reason why it shouldn't work.
> 
> I'd also use XCOPY or a variant, but that's another matter.
> __
> Dennis
> 
>
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>From Dale Sterner - MS organic chemistry
http://pubs.acs.org/doi/abs/10.1021/jo00975a052
***



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Re: [Freedos-user] USB

2016-04-24 Thread Dale E Sterner 
You're right about error correction. It doesn't exist with the copy
command-pity.
But if your software doesn't have high speed serial enabled then you 
only have left the dos copy command. Most software will print to a .prn
file.
which you can copy to the printer. Most software targets to the lpt1
port.
Since the printer is in the next room a 20 ft cable would be needed.
Modern bluetooth works fairly well. If there is an error in transmission
its a train wreck but if you have the antennas lined up well, its usually
not a serious problem.

cheers
DS

On Sat, 23 Apr 2016 18:30:03 -0700 Ralf Quint 
writes:
> On 4/23/2016 6:53 PM, Dale E Sterner wrote:
> > The copy command is limited to what you set the mode command to.
> > FREEDOS lets you set the baud very high but other dos's and
> > even windows has 9600 baud as the upper limit, well below
> > the uarts top speed.
> > If I type copy filename.prn com1: in any other dos besides FREEDOS
> > its top transmission speed is 9600. Any graphics file would take a 
> few
> > minutes at that speed. Text file are ok at 9600 but pictures take
> > forever.
> > Terminal software like xtalk only send text files at high speeds.
> > For photos you need the dos copy command.
> Sorry, but all of this is NOT correct. Once again, nothing in DOS 
> limits 
> how high you set the UART speed, and certainly nothing in Windows.
> 
> I have been using serial devices (not USB) with 115k baud for 
> decades, 
> likewise transferred non-text files over serial connections for that 
> 
> long as well, even using such antic dinosaurs like Kermit to 
> transfer 
> programs (executables) as well as graphics between MS-DOS and other 
> systems like Unix SysV or Atari 520, because I had only BBS access 
> (this 
> was before there was what today is called an "Internet") on my 
> MS-DOS 
> (later Windows 3.11) system.
> At work back in the late '80s/early'90s (CAD software company) we 
> were 
> running serial connected plotters at 56K and 115k baud, pretty much 
> all 
> of our digitizer tablets ran at 38.4k baud. And I had one of the 
> first 
> modems running at 56K baud when the standard was still 28.8K or 
> 33.6K. 
> All in DOS...
> 
> If you set the baud rate with the FreeDOS mode command, on any DOS, 
> a 
> copy command will work, however, there is no handshake, no error 
> correction, so you need to have a 100% working serial connection to 
> have 
> that working.  A copy to COM[1,2] otherwise will work at whatever 
> the 
> speed of the UART is set to.
> 
> Ralf
> 
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> 
>
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**
>From Dale Sterner - MS organic chemistry
http://pubs.acs.org/doi/abs/10.1021/jo00975a052
***


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