Yann Sagon <[EMAIL PROTECTED]> writes:
> Mais bien s�r!!! merci pour l'info, c'est exactement �a. Maintenant,
> pourquoi j'ai un ttyS2, c'est un myst�re pour moi.
Aucune id�e.
> Par contre, j'ai eu un autre probl�me, les deux ports ttyS*
> utilisaient le m�me IRQ, ce qui g�n�rait des p�rtes de liason entre
> mon palm et le pc. Maintenant, chaque ttyS* a un autre IRQ et tout
> fonctionne tr�s bien.
�a semble �tre standard sur les PCs (x86?), extrait de "man
setserial":
The "standard MS-DOS" port associations are given below:
/dev/ttyS0 (COM1), port 0x3f8, irq 4
/dev/ttyS1 (COM2), port 0x2f8, irq 3
/dev/ttyS2 (COM3), port 0x3e8, irq 4
/dev/ttyS3 (COM4), port 0x2e8, irq 3
Due to the limitations in the design of the AT/ISA bus
architecture, normally an IRQ line may not be shared between
two or more serial ports. If you attempt to do this, one or
both serial ports will become unreliable if you try to use both
simultaneously. This limitation can be overcome by special
multi-port serial port boards, which are designed to share
multiple serial ports over a single IRQ line. Multi- port
serial cards supported by Linux include the AST FourPort, the
Accent Async board, the Usenet Serial II board, the Bocaboard
BB-1004, BB-1008, and BB-2016 boards, and the HUB-6 serial
board.
Donc les ports 0 et 2, ainsi que 1 et 3 ont les m�mes IRQ, mais des
adresses IO diff�rentes.
tom
--
as seen in a signature:
"In an open world without walls and fences,
who needs Gates and windows?"
_______________________________________________
gull mailing list
[EMAIL PROTECTED]
http://lists.alphanet.ch/mailman/listinfo/gull
