Date: Wed, 7 Jun 1995 10:17:47 -0400 From: "Danny J. Zerkel" <dzerkel@feephi.phofarm.com> To: esser@zpr.uni-koeln.de Cc: freebsd-hackers@freebsd.org Subject: Re: 2.0.5 ALPHA Message-ID: <199506071417.KAA05472@feephi.phofarm.com>
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> On Jun 6, 21:36, "Danny J. Zerkel" wrote: > } Subject: Re: 2.0.5 ALPHA > > Since the PCI chip set messages are my code, > I'll comment on some of your questions. Thanks, I certainly would like to understand what's going on. > } Here's what dmesg says, by the way: > } CPU: 78-MHz Pentium 735\\90 or 815\\100 (Pentium-class CPU) > } Origin = "GenuineIntel" Id = 0x524 Stepping=4 > } Features=0x1bf<FPU,VME,PSE,MCE,CX8,APIC> > } real memory = 16384000 (4000 pages) > } avail memory = 15085568 (3683 pages) > > } bt0: Bt946C/ 0-PCI/EISA/VLB(32bit) bus > } bt0: reading board settings, busmastering, int=15 > } bt0: version 4.24, sync, parity, 32 mbxs, 32 ccbs > } bt0: targ 0 sync rate=10.00MB/s(100ns), offset=15 > } bt0: targ 3 sync rate= 5.00MB/s(200ns), offset=08 > } bt0: targ 6 sync rate= 4.54MB/s(220ns), offset=15 > > Hmm, that's unrelated, but quite interesting ... > The BusLogic seems to negotiate synch. transfers > before knowing the device characteristics (at least > before the SCSI code has issued an INQUIRY command). > > } bt0: Enabling Round robin scheme > } bt0 at 0x330 irq 15 on isa > } (bt0:0:0): "CONNER CFP1060S 1.05GB 2035" type 0 fixed SCSI 2 > } sd0(bt0:0:0): Direct-Access 1013MB (2074880 512 byte sectors) > } sd0(bt0:0:0): with 2756 cyls, 8 heads, and an average 94 sectors/track > } (bt0:3:0): "HP HP35470A 1109" type 1 removable SCSI 2 > } st0(bt0:3:0): Sequential-Access density code 0x13, variable blocks, write-enabled > } (bt0:6:0): "PLEXTOR CD-ROM PX-4XCS 1.01" type 5 removable SCSI 2 > } cd0(bt0:6:0): CD-ROM > } cd0(bt0:6:0): NOT READY asc:3a,0 Medium not present > } can't get the size > ... > } Probing for devices on the pci0 bus: > } configuration mode 2 allows 16 devices. > } chip0 <Intel 82434LX PCI cache memory controller> rev 17 on pci0:0 > } CPU: Pentium, 100MHz, CPU->Memory posting ON > ^^^^^^ > This 100MHz value is derived from a clock > divider setting in the chip set. > (Don't know where the 78MHz in the first > lines of the boot log come from.) > > } Cache: None3-2-2-2/4-2-2-2 > ^^^^^^^^^^^^^^^^^^^ > Hmm, didn't expect that to happen ... > Will fix it when the code freeze is over. What didn't you expect? > > } DRAM: page mode memory clocks=X-4-4-4 (70ns) > > The RAM is accessed every 4 clocks, after the > initial lead in cycles. This should suffice > for 70ns DRAMs. If you got 60ns DRAMs, then > you might try to select a X-4-4-4/X-3-3-3 > mode, according to the i82434LX data book. > This should be a BIOS option. Hmm, there is a setup feature, but I don't see any options about memory speed. Could this be jumpered? > } CPU->PCI: posting ON, burst mode ON, PCI clocks=2-1-1-1 > } PCI->Memory: posting ON > } chip1 <Intel 82378IB PCI-ISA bridge> rev 3 on pci0:2 > } [40] 40420 [50] 0 [54] 4000000 > } pci0:3: vendor=0x1095, device=0x640, class=storage [not supported] > } pci0:13: vendor=0x104b, device=0x1040, class=storage [not supported] > } map(10): io(fcfc) > > If you know what kind of devices these are, > they can be appended to our PCI vendor and > card list. The device at 3 is the Diamond Stealth 64 DRAM PCI video card, I think. The device at 13 is the BT946C. That's all the PCI card I have. I'd love it if the BT946C showed up as a PCI device, instead of in ISA emulation. > } Note: The first line says 78MHz, sometimes it say 100MHz. > } The DRAM: line says "(70ns)", althought I have 60ns memory. > } Is there a way of changing this. > > The PCI code only displays values, since we > found that we generally can rely on the BIOS > for initialisation. Well, I know almost nothing about PC hardware. So I don't know what a good idea would be here. > If you got 60ns DRAMs, then try to choose a > faster DRAM access mode. > I'm new on the "hackers" list, and missed > most of this thread. Do I understand right, > that you have secondary cache, but had to > disable it to make your system work ? I had to disable the cache to boot the boot floppy. I don't know if it still would effect my system. > Regards, STefan Danny J. Zerkel Photon Farmers
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