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  • From: sindi keesan <keesan AT sdf.lonestar.org>
  • To: baslinux AT lists.ibiblio.org
  • Subject: Interrupts, was Re: [BL] loadlin with vmlinuz
  • Date: Tue, 7 Jun 2005 01:50:01 +0000 (UTC)

I don't think the kernel is the problem because when I chroot from
BL2 to BL3 (using BL2 kernel still) I still cannot load isofs.

Wait a minute. The BL2 kernel does not need isofs, right?

I loaded BL3 with a BL2 kernel (no need for CD-ROM modules) and
attepted to mount the CD-ROM drive (/dev/hdc) in BL3:
mount: Mounting /dev/hdc on /cd failed: No such file or directory
I chrooted to BL2 and mounted this same CD with no problems.

Does /cd exist on the BL3 root directory?

It does now. Thanks.


Using the BL3 kernel, I can insmod ide-cd and cdrom but isofs will
NOT mount in BL3 - Device or resource busy. 48X CD-ROM drive, works
in DOS and BL2 but not BL3.

Not mount? You said that isofs wouldn't insert correctly, earlier.
So isofs will not insert in BL3 on one of your computers? But BL2,
since it doesn't need insertion, works fine?

It won't insert in BL2 either.


Thanks. Fixed.

Do you happen to know why, when I put in an ESS1868 ISA sound card (sb compatible) and disabled onboard secondary controller to avoid a conflict with its IDE controller, and plugged the CD-ROM drive into the controller (before that BIOS could not find it, due to the conflict), the CD-ROM drive now works in DOS, but linux tells me there is an interrupt problem with hdg and the CD-ROM drive does not work in linux.

hda - hard drive
hdb - empty
hdc and hdd - disabled onboard ide1
hdf and hdg - tertiary controller. Apparently the CD-ROM drive was set to slave, but does it need to be master to work in linux? In DOS slave works. I moved it over so I could later put in a second hard drive as primary slave. I will try the CD-ROM drive as master, and if that does not help, then change to a sound card without IDE controller.

SB16 has a way to disable the onboard controller with software in DOS, which carries over into linux. I will look into the DOS ESS software, but does linux have a way to disable an onboard IDE controller on a pnp sound card, for instance can you do that with isapnp?

We also had an interesting time with four ISA 3c509 ethernet cards, two of which are BNC/AUI and two 10BaseT/AUI.

One of the latter worked in one computer and the other did not. I downloaded the DOS 3c509.zip file and unzipped and ran 3c509 which let me change the settings from WIndows to DOS optimization, and the modem speed from 9600 to none, and the IRQ on the one that worked and the one that did not work was 10.

There was also a diagnostic test. The card that worked in linux passed and the other one had an IRQ conflict in the test, and both were set at IRQ10. I changed the latter to IRQ11 and it passed. These looked like identical cards and all the settings were the same to start with. I also had to change to IRQ 11 the two BNC cards and I also changed one from AUI to BNC.

Why did the one card work at IRQ10 (I could ping it in linux) but not pass the DOS test? I changed it to 11 also. Does isapnp also let you actually change the settings (write new settings permanently to the card)?

In the other computer, the DOS program would not work at all, just hung, once it crashed, but the cards worked in there and we did a file transfer. Could a conflict in DOS make the program crash, but linux does not have that conflict? Neither IRQ10 nor IRQ11 worked. I have in there a pnp sound card, awe32, which cannot be both 10 and 11, but could it somehow have interfered with this program? The ethernet card is 1992 (pre-linux) and the sound card a more recent 1995. The ethernet cards were all io 300, which might be the same as the sound card, but resetting one to 360 did not help. We could try again without the sound card. I also have another large package which might let me use the ethernet cards in DOS for setting up a network, but linux seems much easier.

I recycled all the jumpered ISA ethernet cards because they had IRQ choices like 3 4 5 7.

I know this is not strictly BL related, but this is certainly obsolete hardware, and the module for these cards comes with BL, unlike the modules for most of my newer cards (tulip and rtl8139) so I wanted to use them with ramdisk BL2 for ethernet file transfer of DOS and linux to empty drives instead of copying over tulip.o from floppy disk after booting.

We have an ne card (AUI BNC and 10BaseT) for which you need to specify io and irq and first insmod 8390, which I may recycle though it offers a choice of three connectors. All five of these cards have AUI - what is the chance of finding that cable used?




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