[Coco] Tutorial on Telnet/inetd on Coco3 DW4 (is there one?)

[Gene Heskett]

On Thursday 11 October 2012 21:33:37 Bob Devries did opine:

> Hehe, yeah, I wasn't thinking...
> 
> I guess what we need is a realiable way to add a file to an existing
> .DSK or .VHD file. Not sure if wimgtool.exe will fill the bill, or what
> you'd use on Linux.
> 
> I'll do some playing....

Use the Toolshed stuff for that.
> 
> Regards, Bob Devries
> Dalby, QLD, Australia
> 
> ----- Original Message -----
> From: "Gene Heskett" <gheskett at wdtv.com>
> To: <coco at maltedmedia.com>
> Sent: Friday, October 12, 2012 11:23 AM
> Subject: Re: [Coco] Tutorial on Telnet/inetd on Coco3 DW4 (is there
> one?)
> 
> > On Thursday 11 October 2012 20:42:11 Bob Devries did opine:
> >> Good for you, Gene. happy to listen to your educated ramblings any
> >> day
> >> 
> >> :)
> >> 
> >> Tell me, I think I should be able to run RZ over the telnet session?
> >> When I start rz (with no command line options) it sits there for a
> >> while, and errors out with ERROR #216.
> > 
> > On which end of the circuit?
> > 
> > For transfers coming up to this machine I generally get a dir listing
> > on screen so that I can then tell the coco shell to launch "sz -b
> > filename".
> > 
> > Minicom responds to the trigger string and handles the rz stuff on
> > this end.
> > 
> > To go the other way, to the coco, you first need to figure out how to
> > restrict the window/block size of the sz util on you machine to
> > perhaps 512
> > bytes in order not to over-run the coco and cause endless errors that
> > will take the transfer speeds down to about 40/second because of all
> > the over flows.  In minicom that is relatively easy, and for a 6809
> > machine you can get 400+ cps transfers, 600+ on a 6309 machine.  This
> > is on a 9600 baud path.
> > 
> > On the coco, I normally start rz from its shell, (rz </t2) then before
> > it errors out, go thru the procedure to have minicom send the file.
> > rz gets synched and if the pc doesnt drown the coco in data, the file
> > will eventually get there, verbatim.
> > 
> > Now, using telnet, because sz is a hardware oriented protocol, I've no
> > clue
> > how you coerce it into using a socket at an ip address.  It's
> > conceivable that it has grown this ability while I wasn't looking. 
> > The slowdown is still going to be required as the rzsz on the coco is
> > a character by character protocol and simply cannot execute that very
> > lengthy loop from a bufferless ACIA chip any faster that that.
> > 
> > We really do need a faster way to move data than rzsz will ever be,
> > and I think that by using the Toolshed tool kit to "os9 copy filename
> > genes- common.dsk" to copy a file into one of dw's virtual disks on
> > the pc, followed by a copy of that file from say /x1/filename to
> > media local to the
> > coco will be much faster for 25k plus files than rzsz can ever be.
> > 
> > Which works the best is I think, up to us to discover.  But with the
> > relatively error free drivewire, I do not believe we need the block by
> > block crc checking that rzsz does, and which costs us 9/10nths of the
> > transfer speed otherwise attainable by the simpler protocols.
> > 
> >> Should I use some options for this instance?
> > 
> > You should use the "sz -b -w 256" option to force pure binary and
> > restrict the block size to what the coco can handle, but personally I
> > think we need to find a newer protocol to bark at.  Something that
> > CAN handle the 10k a second that drivewire can do.  rzsz isn't it, by
> > quite a lengthy row of apple trees.
> > 
> > Aaron?  What is your take on this?
> > 
> >> Regards, Bob Devries
> >> Dalby, QLD, Australia
> > 
> > Cheers, Gene
> > 
> > --
> > Coco mailing list
> > Coco at maltedmedia.com
> > http://five.pairlist.net/mailman/listinfo/coco
> 
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Cheers, Gene
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