Difference between revisions of "3Com 3c509"

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== Boot ROM ==
 
== Boot ROM ==
  

Revision as of 08:30, 14 March 2018

3Com 3c509
3Com 3c509.jpg
Bus type ISA
Bus width 16-bit
Bus speed 8 MHz
8-bit ISA compatible? Yes
Manufacturer 3 Com Corporation
Chipset EN50903
Compatible with NE1000, NE2000
Connectors AUI, BNC, RJ45
Requires -5VDC? No
Requires -12VDC? No
Config method Software
Ethernet
Boot ROM Socket, 28-pin JEDEC, read-only
Driver Missing download URL

The 3 Com 3C509 is a 10Mbps network card.


Additional photos

Boot ROM

This card's boot ROM socket will take a standard 28-pin ROM chip. It has also been successfully tested with a 32-pin ROM chip using an adapter[1]. XTIDE will run without any problem.

The card's DOS drivers come with a configuration program (3C509.EXE) that can be used to enable the ROM socket (it is disabled by default) and set the base address, as well as adjust all the usual options like base address and IRQ.

Resources

  • I/O address: 0, 20, 40, ... 3A0, 3E0, then the same increments starting at 2000, 4000, 6000, 8000, A000, C000, E000.
  • IRQ: 2, 3, 4, 5, 7, 10, 11, 15, Disabled.
  • Boot ROM size: 16kB, 32kB, 64kB, Disabled.
  • Boot ROM: 8000, 8400, 8800, 8C00, then the same increments starting at 9000, A000, B000, C000, D000, E000 and F000.

References

  1. Port 388h - Retrofitting a new EEPROM into an old PC