[Search for users] [Overall Top Noters] [List of all Conferences] [Download this site]

Conference hydra::amiga_v1

Title:AMIGA NOTES
Notice:Join us in the *NEW* conference - HYDRA::AMIGA_V2
Moderator:HYDRA::MOORE
Created:Sat Apr 26 1986
Last Modified:Wed Feb 05 1992
Last Successful Update:Fri Jun 06 1997
Number of topics:5378
Total number of notes:38326

1161.0. "FOGGY hi baud rate upload bug?" by WJG::GUINEAU (W. John Guineau, RD Buyout engineering) Fri Feb 12 1988 11:16

T.RTitleUserPersonal
Name
DateLines
1161.1EVER11::EKLOFWe're everywhere.Fri Feb 12 1988 15:1811
Re: .0

>Has FOGGY upload logic and/or baud rate code been changed? (I know the
>baud stuff has since SMOKEY didn't support 19.2 and 38.4)

	You're kidding, right?  I didn't change any of that.  Support for 19.2
and 38.4 K baud were in Smokey X1.0.  All I changed in Foggy was the keyboard
handling. 

Mark

1161.2What kind of microvax port are you abusing?PRNSYS::LOMICKAJJeff LomickaFri Feb 12 1988 15:4114
What kind of serial port were you using on the microvax?  Were you
using the console port?  The console port takes an interrupt per
character, and the VAX just might not be able to keep up.  I've found
that even when tyou set /ALTTYPEAHEAD on the port, which helps a lot by
the way, that I cannot reliably use KERMIT on CSA0: of a microvax at
speeds over 4800 baud.  You get problems with data overruns because
there is no hardware buffering in the console port. If you have a DZV
or DZQ, then setting /ALTTYPEAHEAD on the port should cure the problem.
 Make sure the sysgen parameter that controls the /ALTTYPE size is set
to something large enough, at least 256. (I use 2000).

Note that setting /ALTTYPEAHEAD requires /PERM, which requires that you
have sufficient privs.

1161.32000 you say?WJG::GUINEAUW. John Guineau, RD Buyout engineeringSat Feb 13 1988 21:249
It's a DZQ. I bet /ALTYPEAHEAD  is the culprit!

Privs?  Why, I wouldn't use a MicroVAX without 'em !

Thanks Jeff,

John (who's logging out now to fix his MicroUploader)

1161.4Like MagicWJG::GUINEAUW. John Guineau, RD Buyout engineeringSun Feb 14 1988 12:557

And that floppy dosen't stop spinning till it's done!

Thanks Again Jeff,

John
1161.538.4DICKNS::MACDONALDWA1OMM Listening 224.28Sun Feb 14 1988 22:124
    Smokey doesn't handle 38.4 very well. Either that or my PC running
    ProComm Plus doesn't handle it well.
    
    Paul
1161.6WJG::GUINEAUW. John Guineau, RD Buyout engineeringMon Feb 15 1988 11:5112

After poking throught the Libraries and Devices RKM manual, I found
that the Amiga HARDWARE supports up to 220,000 BAUD! Except
that due to the multi-tasking nature, recieving is only relaible
at 19.2 or slightly above (I think something like 31000 is max)
Above that you may loose a character here or there :-)

You can send as fast as you'ld like - assuming your software
can keep up.

John
1161.7meshugenaVIDEO::LEIBOWMichael LeibowTue May 31 1988 21:328
    There is also a problem with the serial.device driver (or my ignorance
    about something):
    
    Sometimes at high baud rates, the Amiga will send out 4 XOff characters
    and never send an XOn.
    
    	--Mike Leibow