IBM Token-Ring (16/4 ISA) Switch Notes


The IBM Token-Ring NIC has 12 switches, their functions are in the tables below.

Legend
Sw-On (down)Sw-Off (up)Default
White-Text

ROM-Address
CC000
DC000

Interrupt
2
3
6
7

Adapter
Primary
Secondary

Shared-RAM
8 K
16 K
32 K
64 K

Ring-Speed
16 Mb/sec
4 Mb/sec



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