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Date:      Tue, 6 Jun 1995 21:36:10 -0400
From:      "Danny J. Zerkel" <dzerkel@feephi.phofarm.com>
To:        jkh@freefall.cdrom.com
Cc:        davidg@root.com, freebsd-hackers@freebsd.org
Subject:   Re: 2.0.5 ALPHA
Message-ID:  <199506070136.VAA00223@feephi.phofarm.com>

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> > After talking with the hardware tech support people, they suggested that
> > I turn off the RAM cache.  Which has fixed my problems.  I have a Micron
> > 100MHz Pentium with 16MB RAM and 512K of cache.  What do I do to allow
> > me to re-enable the RAM cache?  Is there some way of changing the timing?
> > What information would help you help me?
>
> What happens if you keep the cache disabled during the install but
> then turn it back on when it's time to reboot from the hard disk?  At
> that point you're no longer running the gzip'd / MFS'd kernel and
> it would be _very_ enlightening to know if the problems still
> persisted.
>
> 					Jordan

I just tried the latest boot floppy (per David's suggestion) and it still
dies trying to uncompress the kernel.

I turned the cache on and ran for a while, without any serious problems.

With the cache on or off, I have problems unpacking the compressed tar
archives of the distribution.  I get errors part way through.

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)
Probing for devices on the ISA bus:
sc0 at 0x60-0x6f irq 1 on motherboard
sc0: VGA color <8 virtual consoles, flags=0x0>
lpt0 at 0x378-0x37f irq 7 on isa
lpt0: Interrupt-driven port
lp0: TCP/IP capable interface
psm0 at 0x60-0x63 irq 12 on motherboard
sio0 at 0x3f8-0x3ff irq 4 on isa
sio0: type 16550A
sio1 at 0x2f8-0x2ff irq 3 on isa
sio1: type 16550A
pca0 on motherboard
pca0: PC speaker audio driver
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
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

wdc0 at 0x1f0-0x1f7 irq 14 flags 0xff8004 on isa
wdc0: unit 0 (wd0): <Conner Peripherals 545MB -  CP30544>, multi-block-4
wd0: 520MB (1065456 sectors), 1057 cyls, 16 heads, 63 S/T, 512 B/S
wdc0 not probed due to I/O address conflict with wdc0 at 0x1f0
fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa
fdc0: NEC 72065B
fd0: 1.44MB 3.5in
1 3C5x9 board(s) on ISA found at 0x300
ep0 at 0x300-0x30f irq 1 on isa
ep0: aui/bnc/utp[*UTP*] address 00:20:af:a1:d2:a6 irq 1
npx0 on motherboard
npx0: INT 16 interface
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
	Cache: None3-2-2-2/4-2-2-2
	DRAM: page mode memory clocks=X-4-4-4 (70ns)
	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)
vga0 <VGA-compatible display device> rev 0 int a irq 9 on pci0:14
	mapreg[10] type=0 addr=40000000 size=800000.
pci0: uses 8388608 bytes of memory from 40000000 upto 407fffff.
BIOS Geometries:
 0:020e1f3f 526 cyl, 31 heads, 63 sects
 1:03f43f20 1012 cyl, 63 heads, 32 sects
 0 accounted for
sd0s1: type 0xa5, start 32, end = 2074623, size 2074592 : OK
wd0s1: type 0x6, start 63, end = 205631, size 205569 : OK
wd0s2: type 0xa5, start 205632, end = 1064447, size 858816 : OK

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.

PS- Thanks for all the hard work, Jordan.  You've done an incredible
job under enormous pressure.
------------------------------------------------------------------
Danny J. Zerkel
Photon Farmers
"Cultivating Your Digital Image"



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