FDDI Single Ring Adapter (Type 2-6)



8ef4m.xx.xx
Crossover Cable
Wrap Plug 92F9003




FDDI Single Ring Adapter 81F8981 ?


Kevin Bowling sendt me some feelthy-feely pics of the 2-6.

2R looks OEM-ish, 2-6 screams heavy-handed IBM...

?  FDDI xcvr
P2 Connector to DAS
U4 AM79C81AGC/10
U5 AM79C82AGC
U? 17x MT5C2564DJ-35
U14 MCA Bus Interface [81F8516ESD?]
U15 AM79C83GC
U? AM7984AJC/20 [under heatsink?]
U51
AM7985AJC/10
U28 81F8988
U22 81F8987
U31 Blue 91F1059
U37 75.0000 MHz osc
U? PLCC68 33G5456 / D12063FN

The DIP in the lower left corner is P/N 31G9394, the white sticker to lower left of the blue chip says 31G9393.

Some chips may be off a little. Blame Kevin, not me...

AM79C81AGC CMOS RAM Buffer Controller (RBC)
AM79C82AGC Data Path Controller (DPC) 
AM79C83GC FORMAC Plus 
AM7984AJC FDDI Encoder Decoder (ENDEC) 
AM7985AJC FDDI ENDEC Data Separator (EDS)

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