the idebus refers to pci/ide bus speed, and it's isn't as same as your
system bus speed. The standard is 33Mhz even on the latest of the latest
motherboards(my company ships machines with Tyan boards that aren't on the
market yet). Normally, if you want to set the idebus, you'd put in:
append = "idebus=33"
in you lilo.conf file, but if you set 100 to it, chances are, you won't
even be able to boot your machine. The rare cases when the idebus runs at
higher than 33Mhz, it still only runs at 41Mhz. So basically, don't touch
this. PCI/IDE bus speed != overall system bus speed
^- (that's NOT EQUAL to non-programmers)
John Kim
Linux System Engineer @ ASL - visit us as www.aslab.com
On Tue, 13 Jun 2000, David M. Kufta wrote:
> Good morning,
> On a clients workstation at boot I see this message displayed, which I
> have never noticed before, that refers to idebus speed. This machine has
> a 100Mhz bus and 128meg pc100 ram.
>
> Linux version 2.2.16-2mdk ([EMAIL PROTECTED]) (gcc
> version 2.95.3 19991030 (prerelease)) #1 Fri Jun 9 11:50:15 PDT 2000
> Detected 400917 kHz processor.
> Console: colour VGA+ 80x25
> Calibrating delay loop... 799.54 BogoMIPS
> Memory: 127756k/131072k available (1228k kernel code, 408k reserved,
> 1608k data, 72k init, 0k bigmem)
> Dentry hash table entries: 16384 (order 5, 128k)
> Buffer cache hash table entries: 131072 (order 7, 512k)
> Page cache hash table entries: 32768 (order 5, 128k)
> VFS: Diskquotas version dquot_6.4.0 initialized
> CPU: L1 I Cache: 32K L1 D Cache: 32K
> CPU: AMD AMD-K6(tm) 3D processor stepping 0c
> Checking 386/387 coupling... OK, FPU using exception 16 error reporting.
> Checking 'hlt' instruction... OK.
> POSIX conformance testing by UNIFIX
> mtrr: v1.35a (19990819) Richard Gooch ([EMAIL PROTECTED])
> PCI: PCI BIOS revision 2.10 entry at 0xfb3c0
> PCI: Using configuration type 1
> PCI: Probing PCI hardware
> PCI: 00:38 [1106/0586]: Work around ISA DMA hangs (00)
> Activating ISA DMA hang workarounds.
> Linux NET4.0 for Linux 2.2
> Based upon Swansea University Computer Society NET3.039
> NET4: Unix domain sockets 1.0 for Linux NET4.0.
> NET4: Linux TCP/IP 1.0 for NET4.0
> IP Protocols: ICMP, UDP, TCP, IGMP
> TCP: Hash tables configured (ehash 131072 bhash 65536)
> Initializing RT netlink socket
> Starting kswapd v 1.5
> Serial driver version 4.27 with MANY_PORTS MULTIPORT SHARE_IRQ enabled
> ttyS00 at 0x03f8 (irq = 4) is a 16550A
> ttyS01 at 0x02f8 (irq = 3) is a 16550A
> ttyS02 at 0x03e8 (irq = 4) is a 16550A
> ttyS03 at 0x02e8 (irq = 3) is a 16550A
> pty: 256 Unix98 ptys configured
> apm: BIOS version 1.2 Flags 0x07 (Driver version 1.13)
> Real Time Clock Driver v1.09
> RAM disk driver initialized: 16 RAM disks of 4096K size
> Uniform Multi-Platform E-IDE driver Revision: 6.30
> ide: Assuming 33MHz system bus speed for PIO modes; override with
> idebus=xx
> VP_IDE: IDE controller on PCI bus 00 dev 39
> VP_IDE: not 100% native mode: will probe irqs later
>
>
> VT 82C598 Apollo MVP3
> Chipset Core ATA-33
> Split FIFO Configuration: 8 Primary buffers, threshold = 1/2
> 8 Second. buffers, threshold = 1/2
> ide0: BM-DMA at 0xe000-0xe007, BIOS settings: hda:DMA, hdb:DMA
> ide0: VIA Bus-Master (U)DMA Timing Config Success
> ide1: BM-DMA at 0xe008-0xe00f, BIOS settings: hdc:DMA, hdd:DMA
> ide1: VIA Bus-Master (U)DMA Timing Config Success
> hda: SAMSUNG WN321620A (2.16 GB), ATA DISK drive
> hdb: SAMSUNG WN321620A (2.16 GB), ATA DISK drive
> hdc: QUANTUM FIREBALL CR8.4A, ATA DISK drive
> hdd: TOSHIBA CD-ROM XM-6102B, ATAPI CDROM drive
> ide2: ports already in use, skipping probe
> ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
> ide1 at 0x170-0x177,0x376 on irq 15
> hda: SAMSUNG WN321620A (2.16 GB), 2060MB w/109kB Cache, CHS=523/128/63,
> DMA
> hdb: SAMSUNG WN321620A (2.16 GB), 2060MB w/109kB Cache, CHS=523/128/63,
> DMA
> hdc: QUANTUM FIREBALL CR8.4A, 8063MB w/418kB Cache, CHS=16383/16/63,
> UDMA(33)
> hdd: ATAPI 24X CD-ROM drive, 256kB Cache, DMA
> Uniform CD-ROM driver Revision: 3.09
> Floppy drive(s): fd0 is 1.44M
> FDC 0 is a post-1991 82077
> md driver 0.90.0 MAX_MD_DEVS=256, MAX_REAL=12
> raid5: measuring checksumming speed
> raid5: MMX detected, trying high-speed MMX checksum routines
> pII_mmx : 853.059 MB/sec
> p5_mmx : 823.722 MB/sec
> 8regs : 559.308 MB/sec
> 32regs : 387.096 MB/sec
> using fastest function: pII_mmx (853.059 MB/sec)
> scsi : 0 hosts.
> scsi : detected total.
> md.c: sizeof(mdp_super_t) = 4096
> Partition check:
> hda: hda1 hda2 hda3
> hdb: hdb1
> hdc: hdc1 hdc2 < hdc5 >
> autodetecting RAID arrays
> autorun ...
> ... autorun DONE.
> VFS: Mounted root (ext2 filesystem) readonly.
> Freeing unused kernel memory: 72k freed
> Adding Swap: 68540k swap-space (priority -1)
> Soundblaster audio driver Copyright (C) by Hannu Savolainen 1993-1996
> SB 4.11 detected OK (220)
> YM3812 and OPL-3 driver Copyright (C) by Hannu Savolainen, Rob Hooft
> 1993-1996
> 3c503.c: Presently autoprobing (not recommended) for a single card.
> 3c503.c:v1.10 9/23/93 Donald Becker ([EMAIL PROTECTED])
> eth0: 3c503 at i/o base 0x300, node 02 60 8c 4b f9 c7, using internal
> xcvr.
> eth0: 3c503 - 8kB RAM, 8kB shared mem window at 0xdc000-0xddfff.
> CSLIP: code copyright 1989 Regents of the University of California
> PPP: version 2.3.7 (demand dialling)
> PPP line discipline registered.
> registered device ppp0
> PPP BSD Compression module registered
> PPP Deflate Compression module registered
> SLIP: version 0.8.4-NET3.019-NEWTTY-MODULAR (dynamic channels, max=256)
> (6 bit encapsulation enabled).
> SLIP linefill/keepalive option.
> IPv4 over IPv4 tunneling driver
>
> Claims that can be overidden with idebus=xxx ? Possibly someone on the
> list could explain where this statement would need to be in order to
> correctly establish, and take advantage of the 100Mhz bus ? I don't
> recognize this as an option in Lilo.
>
> Thank you,
> Dave
>
> David M. Kufta
> Konsult Ltd.
> [EMAIL PROTECTED]
>
