#: 20043 S12/OS9/68000 (OSK)
    19-Jun-94  10:01:48
Sb: #20042-#Zmodem Question
Fm: Bill Dickhaus 70325,523
To: David Breeding 72330,2051 (X)

David,

 > The port seems to work well on a straight connection, that is, data came
 > in well with no losses or anything when getting menus, etc from the BBS.
 > XModem D/L's using XYDown came in error-free.  "rz" was the only one that
 > balked.

Zmodem transfers large blocks, and is pretty much a non-stop protocol, sK
not uncommon for everything but Zmodem to work.

 > I don't really have any docs as to the flow control setup.  I was using
 > STerm and I understand that it maybe does its own thing re: flow control,
 > and this could be the problem.

Sterm will do ^S/^Q flow control if you are using file capture (ESC/C), which
will confuse some systems. It doesn't use flow control during protocol
transfers, other than whatever flow control might be built into the protocol.

 > I was just curious as to why "rz" would not work @ 9600 and would @ 4800.

There's probably enough buffering going on to manage at 4800, but 9600 fills up
the buffer too fast, and if flow control between the driver and the modem
either isn't working properly, or isn't supported at all, then data would get
lost.

 > There would be a rapid alternation between the RD and SD lights on
 > the modem, switching back and forth, seeming to me it was "RD" in the lead.

Sounds like the BBS software got out of sync, and was trying to send the wrong
block.

 > While I have you, got a question.  I will be getting "ix" for the OSK
 > system soon as I get my order in, have coco version and was curious if the
 > ".msg" files would happen to be compatible.  I suspect maybe not, as some
 > of the variables are of different size on the 2 systems, but if so, it
 > would be a big plus.

Sorry, but no, they are not compatible. However, I'll take a look at the new
utility program, ixutil, and see how difficult it would be to add a conversion
option. I can't promise anything, though.

-Bill-

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