Re: 01294400 - "A Hardware Default Interrupt Occurred"
- From: Louis Ohland <ohland@xxxxxxxxxxx>
- Date: Wed, 02 Apr 2008 17:31:30 -0500
Some machines that have been migrated to Win95 show up odd effects recently. Especially when switching to and from DOS-boxes into full-screen hi-res modes may cause the system to hang, fall into GPF or show odd colored icons / missing icons / speckled screen etc. This seems to be caused by a faulty, out-of-time palette read ... haven't noticed that on my machine, so I guess the -P- level of the S3 seems to be stabilized.
Louis Ohland wrote:
http://www.gilanet.com/ohlandl/76-77/7677_Lacuna.html#Video.
Peter implies:
1. The S3-928 version used in the Lacuna contains a "special" IBM video bios that includes all XGA-2 modes to allow the use of 951x monitors with that machine.
2. The S3-928 cannot be disabled physically. It goes in some sort of "sleep mode" when another VGA / SVGA capable card is detected - nontheless parts of the card is still activated and *may* cause trouble.
Not confirmed: the early BIOS releases below 07 seem to be more vulnerable to video disturbances with S3 and other video cards. One thing IBM tried to fix with 07. In either case you better use a BIOS 08 - also for the "over 524MB HD" capability.
3. The XGA-2 card has not been announced to be used with the "Lacuna" series anyway. IBM seems to have removed the card from the list, because in the first announcement of the 76i / 77i the XGA-2 is still listed - not in the later product / option matrices and product descriptions on the "Lacuna".
4. The 9515 and 9517 monitors are not 800 x 600 capable *per IBM*. They can be tweaked to show an 800 x 600 like picture, but it is distorted and the monitors have no explicit mode for it. These screens are "XGA-2 only" Multi-Mode screens with fixed adjusted presets. They are no Multisyncs.
If you want to run the Lacuna with most of the possible modes switch to a 9525 or 9527 monitor. Or any other good SVGA screen. I run my "workhorse" 9595-S30 with XGA-2 on an Eizo F35, the 9577-BTG runs with a NEC 15XE and both do fine.
5. Nontheless the XGA-2 (at least) will run in a Lacuna. There might be some interference to clear out manually during OS installs, which is the primary video system. This is usually the one with the monitor attached. In 99% of all cases OS'es get that right - but sometimes the onboard video is ranked higher and the OS gets confused. (Haven't seen that too often to be true - but can happen).
Louis Ohland wrote:Erk. The S3 abomination, as foretold in the prophesies.
Was the IDE controller in use? Or are you smart enough to go SCSI?
IIRC, the IDE controller borrows a line from the FDC. Also, the S3 928 has a hold in the COM3 or 4 area. (Or was that the GUP only?)
Alvin Andries wrote:<wm_walsh@xxxxxxxxxxx> wrote in message
news:87ff71e4-2b09-4701-a2a5-587bb43d6394@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Had a Lacuna Model 76 decide to throw that very error after some more
XGA-208 testing. The machine locked up hard after trying 1160x870 at
256 colors with a 75HZ vertical refresh rate. One cold boot later,
Windows tried to start and then the system halted with a 01294400
error.
As far as I can tell, the offending component is the IDE hard disk. It
will boot the reference partition but fails with that error code when
running the Seek Test in advanced diags or when attempting to boot.
Although I suspect the drive itself has failed in some way, what else
might cause this code?
Sounds a bit like a 8259 PIC being read while the interrupt request is no
longer active (in this case, the PIC will read out IRQ 7), or is this is a
way to say "generic hardware error"? The latter should raise an NMI while
the former will issue a regular IRQ 7/15 interrupt routine. Any way to trace
this?
Alvin.
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