[Coco] 16550 wasRe: RS232 paks

[Bob Devries]

I'm sure I have run ZMODEM on NitrOS9 using the 9600 baud setting. I have a 
Disto SCII with 4-in-1. There didn't appear to be too much difference saving 
to the floppy or hard disc, however, that was using the No-Halt drivers as 
supplied by Disto.

Of course, I *usually* saved to RamDisk, if the file was not too large, but 
then, a file bigger than 32K was considered large back then.

--
Regards, Bob Devries, Dalby, Queensland, Australia

Isaiah 50:4 The sovereign Lord has given me
the capacity to be his spokesman,
so that I know how to help the weary.

website: http://www.home.gil.com.au/~bdevasl
my blog: http://bdevries.invigorated.org/

----- Original Message ----- 
From: "Tim Fadden" <t.fadden at cox.net>
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Friday, March 06, 2009 11:18 AM
Subject: Re: [Coco] 16550 wasRe: RS232 paks


> Hi Mark,
>
> This is my throughput with zmodem also using scsisys 1.1 hard drive with 
> modified os9, but not nitros. Using a Disto super II with a 4in1 card 
> serial port.  I do have a bootable Nitros9 floppy with the scsisys drivers 
> on them, so I could give it a shot with that, and let you know.
>>From my standpoint, the nitros9 floppy drivers lock up keyboard input, a
> feature I do not personally like.  I tend to type ahead a lot when doing 
> stuff.  Even on High-end Sun servers running solaris. :-)
>
> Tim
>
> Mark Marlette wrote:
>> Willard,
>>
>> Exactly my point. Zmodem by nature will re-xmit the loss but you can see 
>> that your effective baud rate goes in the tank.
>>
>> Was this Zmodem xfer saved to a hard disk or floppy?
>>
>> Regards,
>>
>> Mark
>> Cloud-9
>>
>>
>> ----- Original Message -----
>> From: "Willard Goosey" <goosey at virgo.sdc.org>
>> To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
>> Sent: Thursday, March 5, 2009 6:44:15 PM GMT -06:00 US/Canada Central
>> Subject: Re: [Coco] 16550 wasRe:  RS232 paks
>>
>> On Wed, Mar 04, 2009 at 08:12:44AM -0500, David Hazelton wrote:
>>
>>
>>> I have one built by Conect (IIRC)  Since when I bought it I only used 
>>> OS9, It worked great.  I did get better throughput then the RS-PAK.  I 
>>> did mostly Zmodem for file transfers, but I also logged in to VAX 
>>> machines and Unix based Machines at Work.
>>
>> I bet it did!  Zmodem likes uarts with fat FIFOs.  Under OS-9 with a
>> 6551, I couldn't ever get error-free zmodem downloads faster than
>> 4800. :-(
>>
>> Willard
>>
>
>
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