[Coco] 16/32 bit 6809 derivative

[Dave Philipsen]

Gene, I dropped out of the CoCo scene after I wrote Supercomm so I didn’t follow the rzsz progress.  And I’m not that familiar with zmodem. Is the CRC calculation a fairly complex thing?  I found that with xmodem/ymodem it was faster to calculate the checksum/crc on the fly (byte for byte) because it didn’t increase the delay between the packets.  Is there a way to use tables instead of doing the calculations for CRC or perhaps a hybrid method that uses some tables and some calculations?

Dave 

> On Sep 26, 2017, at 8:59 AM, Gene Heskett <gheskett at shentel.net> wrote:
> 
> 
> I had one more thing I was going to do to rzsz, convert the crc calcs 
> from byte for byte calls, with all the overhead that represents, to one 
> call over the whole buffer or part thereof for the final packet, that 
> alone might have sped it up enough it could keep up with a 9600 baud 
> link on a 6309.  But by the time I put 3.3.6 out there, I was burned out 
> for a while and it never got done. My bad, it should have been done 
> then.
> 
> 
> Cheers, Gene Heskett
> -- 
> "There are four boxes to be used in defense of liberty:
> soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> Genes Web page <http://geneslinuxbox.net:6309/gene>
> 
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