*BSD News Article 27000


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From: bernardo@prevfogo.ibama.br (Bernardo Brummer)
Newsgroups: comp.os.386bsd.questions
Subject: STB 4-COM
Date: 9 Feb 1994 19:46:33 -0600
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I just installed a STB 4 COM board
(four serial 16550 board - 1 chip)
The configuration was with an IRQ for
each port: 4, 3, 5 and 2
Works perfectly well with 386bsd, dos and OS/2 (sio driver).
The board can be configured to use high IRQ, 
AND that the four ports share one IRQ.
OS/2 sio driver instructions file, says it will work sharing IRQ's under sio.
Also, shared IRQ work in "polled" mode serial lines under Coherent 3.1.
Now the question: Does it also work under BSD ??
If working with another I/O board 2S 1P in irq 4 and 3, BSD would
accept to compile a kernel using 6 com ports, IRQ 4, 3, 5, 2, 15 and 10 or 12 ?
Would it recognize if changed to a different port address like
1F8 or 1E8 instead of 3F8 OR 2F8. 
I would rather learn from your experience than testing all these possibilities.
(I only want to have 6 serial and 1 parallel working ports). 

Thanks

Bernardo Brummer

bernardo@prevfogo.ibama.br