>Can you post your CONFIG.SYS?
Um, it's rather bloated - I use dozens of TSR's, smartdrv, mouse driver, CD
driver, ram disk, etc..
So I tried your suggested three-line config.sys (himem, emm386, and udma2).
With a simple config.sys, udma2 seems much more reliable - it only fails at
initialization time about 10% of the time. Here is an example of such a
failure:
UDMA2 Disk Driver V2.1, 19-Feb-2005. Output Overlap is DISABLED!
UltraDMA controller at I-O address FC00h. Vendor/Device I.D. 1106h/0571h.
Primary-master disk FAILED read test! DMA timed out.
Primary-slave disk is WDC WD1000BB-32CAA0.
Set to UltraDMA mode 5, ATA-100. Read test = 87 MB/sec.
With overlap turned on, e.g. "device=udma.sys /o", timeout errors are FAR
more likely - about 50% of the time if not more.
I'm not sure if it's related but I noticed on my PC that if I use the D=
option to Microsoft's EMM386 (this controls the amount of KB used to buffer
DMA transfers), AND if I have UDMA loaded, then my PC becomes unstable,
often crashing during bootup. D=60 is stable, while D=63 has problems.
Without UDMA2.SYS loaded, I can go up to D=256 without any problems.
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Johnson
Lam
Sent: Tuesday, March 01, 2005 12:37 AM
To: freedos-user@lists.sourceforge.net
Subject: Re: [Freedos-user] Difficulty using UDMA2
On Mon, 28 Feb 2005 19:42:18 -0800, you wrote:
Hi,
>At initialization time it has a 50% chance for each of my ATA disks of
>failing with error 08 (timeout). It reads normally in any case. Then,
whenever it
>tries to write it almost always fails with the same error. I think
sometimes it
>succeeds at writing because it was able to corrupt my FAT when I let it do
a scandisk
>with UDMA2 loaded *ouch*.
Can you post your CONFIG.SYS?
I suggest you try make a boot disk which have only a single
CONFIG.SYS. And have only 3 files on it:
1) himem.sys
2) emm386.exe
3) udma2.sys
And then the CONFIG.SYS:
----
device=himem.sys
device=emm386.exe
device=udma2.sys
----
>I read the documentation and couldn't figure out any way of getting it to
>work on my system.
Did you tried using FreeDOS boot disk instead?
>Motherboard: MSI MS-6702 K8T Neo FiS2R
>CPU: Athlon 64 3400+
>RAM: 2 x 512 MB PC-3200
>Video: eVGA NVIDIA GeForce FX 5900 Ultra 256 MB DDR RAM Video In/Out
>OS: Win 98 SE
>IDE 1:
>-ATA 100 HD, master, WD 200 GB
>-ATA 100 HD, slave, WD 100 GB
>IDE 2:
>-CD R/W
>-CD-ROM
Can you provide some photo or text appear on screen?
I'll forward your email to the author when you have more information.
Rgds,
Johnson.
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