[Coco] 16550 wasRe: RS232 paks

[Mark Marlette]

Tim,

You can if you like. I know what is going to happen already. :)

I thought there was a driver for the SCII, no halt, so that you didn't loose the data you were typing. Make sure you are using the correct one to get the benefit of the SCII's no halt.

Regards,

Mark




----- Original Message -----
From: "Tim Fadden" <t.fadden at cox.net>
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Thursday, March 5, 2009 7:18:51 PM GMT -06:00 US/Canada Central
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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