Date: Wed, 30 May 2001 23:43:47 -0700 From: Greg Smith <gregsmth@pacbell.net> To: freebsd-mobile@freebsd.org Subject: freeing up IRQs on IBM ThinkPad 600 etc. Message-ID: <200105302343470540.001D98F8@mail.pacbell.net>
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Hello, I thought some people might be interested in the following options to free up IRQs on the TP 600 (and 770 etc?). I wanted to have more available than the default configuration's IRQ 9, so I tested all of these. ============= Free IRQ 15 by disabling warm swap of FDD and CD: ps2 ide2 disable [CD still works as ata0-slave instead of ata1-master] see: http://www.pc.ibm.com/qtechinfo/LWIK-3VTJ5Q.html ============= Free IRQ 10 by moving DSP to IRQ 3: ps2 imodem irq 3 3 [handy if you WON'T be using the modem in FreeBSD, but will be using it in another OS] see: http://www.pc.ibm.com/qtechinfo/LWIK-3VCNT3.html ============= Free IRQ 3 & IRQ 10 by killing DSP & modem: ps2 imodem disable [handy if you WON'T be using the modem at all*] ============= Free IRQ 4 by killing Infrared: ps2 ir disable [handy if you WON'T be using the infrared at all] ============= * because I disabled the imodem device using ps2, but not Win95 Device Manager, it seems to still work fine in Win95 even though the BIOS allows FreeBSD to use IRQs 3 and 10. "at all" refers to other OS's which might not be so (insert your personal opinion here) ============= Of course there are other ps2 options, but these are a few that probably won't affect most people's use of FreeBSD. HTH someone, Greg To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-mobile" in the body of the message
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