Date: Sat, 02 Nov 1996 11:03:53 -0700 From: Steve Passe <smp@csn.net> To: Mark Murray <mark@grondar.za> Cc: rgrimes@FreeBSD.ORG, hardware@FreeBSD.ORG Subject: Re: Looking for motherboard... Message-ID: <199611021803.LAA21585@clem.systemsix.com> In-Reply-To: Your message of "Sat, 02 Nov 1996 19:36:20 %2B0200." <199611021736.TAA07884@grumble.grondar.za>
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Hi, >> ahc0 <Adaptec aic7880 Ultra SCSI host adapter> rev 0 int a irq 19 on pci0:12 > ^^ >Is this IRQ right? Is it a PCI thing, or an SMP thing that IRQ's geater than >15 are present? I was wondering if anyone would notice that! Yes it is correct, its an APIC thing (Advanced Programmable Interrupt Controller). The Intel MP spec calls for the use of APICs in place of the old 8259. Each IO APIC handles up to 24 INTs, the GA586DX uses 21 of these INTS: 16 ISA, 4 PCI, and an SMI hook. I also have an SMC PCI nic card happily running @ IRQ18. >As a happy (?) owner, how would you rate this board? So far I am very happy. I have never "benchmarked" it but Tom's hardware page likes it. From my point of view its an "A" since it seems to correctly impliment the MP spec. I also like the integrated 2940UW, saves a PCI slot, plus subtract street price of a 2950UW and the board costs about $150 (current street price $349). I like the ATX form-factor, though finding a good case is hard (I haven't yet!). It appears to be rock-solid, but since I use it exclusively for SMP development it rairly gets to see uptimes of more than a day (cause I'm always restarting new kernels). Things I don't like: bios won't let me assign specific INTs to PCI slots. bios thinks my stealth64 card is occupying a PCI INT. (can't think of anything else) -- Steve Passe | powered by smp@csn.net | FreeBSD -----BEGIN PGP PUBLIC KEY BLOCK----- Version: 2.6.2 mQCNAzHe7tEAAAEEAM274wAEEdP+grIrV6UtBt54FB5ufifFRA5ujzflrvlF8aoE 04it5BsUPFi3jJLfvOQeydbegexspPXL6kUejYt2OeptHuroIVW5+y2M2naTwqtX WVGeBP6s2q/fPPAS+g+sNZCpVBTbuinKa/C4Q6HJ++M9AyzIq5EuvO0a8Rr9AAUR tBlTdGV2ZSBQYXNzZSA8c21wQGNzbi5uZXQ+ =ds99 -----END PGP PUBLIC KEY BLOCK-----
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