Date: Thu, 03 May 2001 15:17:18 -0000 From: "Greg Smith" <gregsmith59@hotmail.com> To: imp@harmony.village.org Cc: ggm@apnic.net, freebsd-mobile@FreeBSD.ORG Subject: Re: DELL Latitude 400 and pccard? Message-ID: <F107dDW6lCPx33E1ioW00000a8c@hotmail.com>
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Warner, It is my understanding that IRQs 0, 1, 2, 8 & 13 are impossible to use because they are not wired on the motherboard. And IRQs 6, 12 & 14 are very unlikely to be available. That leaves IRQs 3, 4, 5, 7, 9, 10, 11 & 15 as reasonable candidates on a modern PC [ISA16, VGA, IDE]. Below is a portion of a mini-FAQ on PC resources I have been writing in my spare time: IRQ 00 = System timer IRQ 01 = Keyboard IRQ 02 = Prog Int controller IRQ 03 - Serial Port/Modem/IR (COM2) (COM4) IRQ 04 - Serial Port/Modem/IR (COM1) (COM3) IRQ 05 - Sound -OR- Parallel Port/Printer (LPT2) IRQ 06 = Primary Floppy Controller IRQ 07 - Parallel Port/Printer (LPT1) IRQ 08 = System clock IRQ 09 - IRQ 10 - IRQ 11 - IRQ 12 = PS/2 Mouse IRQ 13 = Numeric data processor IRQ 14 = Primary IDE Controller IRQ 15 - Secondary IDE Controller Might I humbly suggest that when you print the "Management IRQ" message for a non-matching IRQ that you include a warning referring to the specific type of device which might be residing on the IRQ you select, since it is possible the IRQ appears to be available when it is not. For example: Management IRQ 15 assigned due to resource conflict Verify IRQ 15 is not in use by Secondary IDE Controller Greg Context below: >: The following seems a little odd to me, because I don't even think IRQ13 >is >: available (wired) on PCs. It is the IRQ for npx, the FPU or numeric data >: processor. > >This usually is the result of having irq 10 listed in the config file, >but actually used by something else, so the allocation returns the >next available one. >: I suspect pcic didn't like your suggestion of IRQ10, and somehow came up >with >: this alternative. > >I think that you might be right. _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-mobile" in the body of the message
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