Subject: Re: DEC vt320 terminal problem
To: Shannon <>
From: Greg A. Woods <>
List: netbsd-users
Date: 06/25/2001 22:29:06
[ On Monday, June 25, 2001 at 21:13:10 (-0400), Shannon wrote: ]
> Subject: Re: DEC vt320 terminal problem
> I've got the same thing, but at 19200.  No joy.

I haven't tried it yet (it wasn't available by anonymous CVS last time I
checked, around noon EDT), but this change might improve things:

Module Name:	syssrc
Committed By:	wdk
Date:		Mon Jun 25 08:30:12 UTC 2001

Modified Files:
	syssrc/sys/dev/ic: z8530sc.c

Log Message:
Don't reprogram SCC registers unless the values have changed.

Some CMOS Z85C30 SCC's (as used in the SGI Indy and Mips Magnum 3000's)
reset the baud rate generator when a new prescaler is loaded - despite
what is documented in the datasheet.

Avoids "character glitch" problems when line discipline characteristics
are changed at the start of the login process, or during a ftp session
on the /dev/console device.

Tested on -sgimips, -mipsco and -alpha platforms

To generate a diff of this commit:
cvs rdiff -r1.12 -r1.13 syssrc/sys/dev/ic/z8530sc.c

							Greg A. Woods

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