Very Computer

1. Problem with AT-Lan-Tec/RealTek Pocket Ethernet Adapter

    Some friends of mine are helping me install Linux on a 386 laptop
with the AT-Lan-Tec parallel port adapter, but we've been stymied by
problems with the adapter.

    First, here's some information on my laptop, and what works.  The
laptop is  a 386SX33 from AVI.  It has 4M RAM, a 250M hard drive with a
125M partition for DOS and Windows and about a 110M partition for Linux
and the rest (about 15M) for Linux swap.  The ethernet adapter is the
AEP-100L mentioned in the Ethernet-HOWTO.  The driver for DOS is called
EP200.  It's on my only parallel port, which is at address 3BC and IRQ
7.  I know this from Norton sysinfo and because this configuration works
fine under DOS/Windows.

    Now, some Linux background and the problems.  I used Slackware, and
I have only installed the A and N disk sets so far.  I'm using the atp.c
driver, and the device name passed to ifconfig is atp0.  I have no
printer specified, so there should be no conflicts for use of the
parallel port.  However, the adapter is non-functional.  What I mean by
that is that when we try to ping, for example, we get xx packets
transmitted, 0 received and 100% packet loss.  But the TXD light on the
adapter does not blink.  On boot, however, the atp driver recognizes the
adapter's hardware address.  With the default atp.c driver, it appeared
that address 3BC was assigned IRQ 5 in an if-then-else statement about a
third of the way through, and that 378 got IRQ 7.  My friend commented
out the if-then-else, added a line that assigned IRQ 7 to dev->irq (or
something like that, which should then work with my adapter), and
recompiled, with no change in the functionality of the adapter.

    Some observations.  If the hardware address is getting read
correctly, something must be working almost right.  Although I'm
relatively new to Linux, my friend tells me that ifconfig indicates the
adapter is configured correctly.

    Does anyone have any insights into this problem???

Many thanks,

Adrian Drury

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