Linux and 100VG networking

This page contains information on using Linux with 100VG networks. The drivers currently support the following cards:

HP J2585 PCI 100VG adapter
This PCI adapter has the ATT2MD11 chip and two RJ45 jacks, one each for 10baseT and 100VG. The major chip isn't labeled 2MD11, but instead 1242K, 1821-1707, YYMM 55739402. The smaller chip is the ATT2X01 100VG transceiver.
HP J2573 ISA 100VG adapter
This ISA adapter has the ATT2MD01 chip and two RJ45 jacks, one each for 10baseT and 100VG. The major chip isn't labeled 2MD01, but instead 100VG, 1821-1400, YYMM 5556040. The smaller chips are the ATT2X01 100VG transceiver, i82503 10baseT transceiver and two Cypress CY7C199-20 SRAM chips. Also on the board is a socket for a boot ROM.
The source of the driver is in pci-100vg.c. A pre-compiled installable module for Linux 1.2.13 is in pci-100vg.o.

Errata

No errata have been noted as of 8/22/95.

Comments

This is an ugly chipset. HP and AT&T obviously put their engineering effort into the physical transmission layer, and ignored the software interface. While users can usually be sheltered from chipset ugliness, in this case there a few of the bad design decisions can't be worked around.