Date: Thu, 12 Mar 1998 18:58:13 -0800 (PST) From: Mostyn Lewis <mrl@teleport.com> To: lamaster@george.arc.nasa.gov Cc: hardware@FreeBSD.ORG Subject: Re: DMM Fireport SCSI controllers Message-ID: <199803130258.SAA25422@user2.teleport.com> In-Reply-To: <199803130004.QAA21030@george.arc.nasa.gov> from "Hugh LaMaster" at Mar 12, 98 04:04:54 pm
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> > > > Are these supported? I didn't see them on the hw compatibility list, > > > but I seem to remember someone mentioning them on -hackers or -current. > > > > Yes, I have successfully used both a Fireport 40 and a dual > > Fireport 40. The dual one may depend on your motherboard a > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > Which motherboard(s) did you use it on successfully? The Dual worked on : 1. ASUS P/I-P55T2P4 rev 3.1, BIOS #205. Bus at 75Mhz. 2. Abit AB-IT5H, Rev 1.5, BIOS #2A59FA1E. Bus ar 66MHz. Probe messages: ncr0 <ncr 53c875 fast20 wide scsi> rev 20 int a irq 10 on pci0:12:0 ncr1 <ncr 53c875 fast20 wide scsi> rev 20 int a irq 10 on pci0:12:1 It's a 53c876 chip. Look for 53c876ds.pdf on the symbios site. Symbios does not use the word bridge in the datasheet. They say: "True multi-function device as defined in PCI 2.1 specification - presents only one load to the PCI bus. Connects directly to the PCI bus without external logic. Functions as one 32 bit PCI DMA Bus Master. Supports 33 MHz PCI Bus zero wait state operation. Supports maximum burst transfer rate of 132 MB/s. Supports shared or separate interrupts on the PCI bus for maximum flexibility. PCI Subsystem Vendor ID and Subsystem ID support with 2-wire serial EEPROM port on each channel. Supports PCI extended access cycles. Supports 3.3Vand %V PCI interface." It can get 16-17 Megabytes/second write rate to a 10,200 rpm IBM DGVS09U disk, writing ~300 Megabytes. Tags are on. > > > little more. Also, I used the latest "demo" BIOS from DMM > > for both. > > You don't happen to know if the dual Fireport 40 looks like > it is bridged or not? > > I guess some dual-ported controllers appear to be PCI-bridged, > while, others appear not to be -- ? (e.g. Adaptec 3940AUW or > whatever it is). Rumor has it that it is better not to be > bridged... > > Regards, > Hugh LaMaster > > -- > Hugh LaMaster, M/S 233-21, ASCII Email: hlamaster@mail.arc.nasa.gov > NASA Ames Research Center Or: lamaster@george.arc.nasa.gov > Moffett Field, CA 94035-1000 No Junkmail: USC 18 section 2701 > Phone: 650/604-1056 Disclaimer: Unofficial, personal *opinion*. > Mostyn Lewis To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message
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