Date: Thu, 11 Jul 1996 23:43:27 +0200 (MET DST) From: J Wunsch <j@uriah.heep.sax.de> To: freebsd-hackers@freebsd.org (FreeBSD hackers) Cc: graichen@axp5.physik.fu-berlin.de, tom@sdf.com (Tom Samplonius) Subject: Re: sio / modem problems Message-ID: <199607112143.XAA16624@uriah.heep.sax.de> In-Reply-To: <Pine.NEB.3.94.960711143620.12898B-100000@misery.sdf.com> from Tom Samplonius at "Jul 11, 96 02:38:12 pm"
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As Tom Samplonius wrote: > You shouldn't put devices on irq 2, as it is used to cascade irqs 8 > through 15 > > irq is only safe on a XT, which has only one irq controller. Only partially right. The ISA bus line for IRQ2 is connected to the second IRQ port of the slave PIC, thus known as IRQ9. So you have to configure your card to IRQ2, but your software (kernel) to IRQ9. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)
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