[Coco] 16550 wasRe: RS232 paks

[Bob Devries]

Of course, I have no idea exactly what the THROUGHPUT was in CPS with that 
setup.

--
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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