Re: Serial port slow on Linux dosemu

[Mark Hounschell <markh@compro.net>]

On 01/09/2012 04:58 PM, Mark Hounschell wrote:
> I've scanned the archives and tried everything I have read but my serial
> ports are still very slow. I'm running some CableEye software and
> connected to a cable tester via ttyS0. I've migrated an old p3 box to a
> newer (still old but) Dual P4 2.2GZ processor. Everything works but the
> serial port is too slow. The old p3 would test a cable in a second. Now
> in the emulator it takes 8 seconds to test the same cable.
>
> I have tried these 2 combos with no luck
>
> $_ports = " device /dev/null range 0x3f8 0x3ff fast"
> # $_com1 = "/dev/ttyS0"
>
> and
>
> #$_ports = " device /dev/null range 0x3f8 0x3ff fast"
> $_com1 = "/dev/ttyS0"
>
> They act the same. How can I get this thing to sing?

When using the  2 config entries below "and" the -s option "as root" the 
serial port speeds up to almost what it should be. It now takes 2 
seconds to test the cable. That is good however, using the -s option 
seems to force some sort of full screen and the "ega" graphics is then 
broken. Without the -s option my window is as I define it in the config 
file and "ega" graphics works OK.


$_ports = " device /dev/null range 0x3f8 0x3ff fast"
# $_com1 = "/dev/ttyS0"

Please help
Thanks
Mark