I have a number of identical PNP ISA network cards based on the Realtek
RTL8019AS chip that I would like to figure out how to run under FreeDOS.
I have not been able to determine the brand or manufacturer. There is a
white sticker with "ESL-816VT", and screen-printed just above that
"T292312T1AZZ0," but neither has led me to an identification. There is
no FCC ID #.
So I'm trying to work with information and a DOS setup utility from
Realtek. The chip is NE2000 compatible, so if I can get the hardware
configured I should be in business.
The sticking point is that I can't get the PC to boot with the NIC
installed and a PS/2 mouse connected. It stops at the point where the
BIOS identifies/configures hardware. But if I hot unplug the mouse it
will continue booting.
It will boot cleanly with a serial mouse, or with no mouse. But for
various reasons I want to get it running with a PS/2 mouse.
It seems like a resource conflict, but I have not been able to find
one. With the Intel ISA Configuration Utility (ICU) driver installed,
the NIC is configured to use IRQ 3 and I/O 220. As I recall, that is
also what the card defaults to without the ICU driver running.
The ICU suite has a utility that reports on resource usage, and IRQ 3
and I/O 220 are not reported to be in use by anything else. The PS/2
mouse should be using IRQ 12, reserved for this purpose.
I have also configured a card to use IRQ 10 and I/O 300, which are
reported to be unused by anything else, and I get the same behavior when
I connect a PS/2 mouse.
Interestingly, the RTL8019AS supports jumpered, jumperless and PNP
modes, but in the implementation on this card there are no jumpers, and
the Realtek utility is not able to switch the card out of its current
PNP mode to jumperless mode.
Can anyone see what the problem is?
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