Re: 3860 bytes per second on a 38400 bps line

From: Ethan Dicks (
Date: 2003-06-05 16:51:44

> I released a new version of c2nload...
> (

I think you mean

> I measured the transfer speed on the C64, C128, Vic-20 and plus/4
> (not on the PET, as my 8032 is a bit difficult to access). 

I know I owe you a PET test, but my 2001N (U.S. version of the 3032,
not the 2001-8) is still flakey when it comes to disk access (I'm
still trying to test my Zmachine port), and to make matters worse,
my laptop disappeared from a convention over the Memorial Day
holiday.  :-(

When I get a replacement, I should be able get things tested between
an 8032 (I have several working ones) and Windows.  The BASIC 2.0
tests will have to wait until I track down why my machine is unstable.
I have replaced the PIAs and VIAs; next on the list are the sockets.


 Loading a 3-byte program
> file takes almost 6 seconds.  Loading a file from $400 to $ffff on the
> Commodore 64 takes 22.618 seconds real time (and virtually no user or 
> time), measured with two different files copied from /dev/random.  The
> transfer of the last 64511 bytes takes 16.709 seconds, which yields a 
> rate of 3860.8 bytes per second.  I would have expected that a 38,400 
bps line
> with 8 data bits and one stop bit would only yield 3840 bytes per 
> 	Marko
>        Message was sent through the cbm-hackers mailing list

Visit "The Seventh Continent"

       Message was sent through the cbm-hackers mailing list

Archive generated by hypermail pre-2.1.8.