Microsoft-Paul Allen

[Al Kossow]

>> IBM developed a Token Ring card for the PC in time for its launch

IBM's initial networking for the PC (The PC Network) was broadband, based
on technology from Sytek. 4Mb token ring was released later. Exact dates
are in the manuals on bitsavers.

http://bitsavers.org/pdf/ibm/pc/pc_network/6322916_PC_Network_Technical_Reference_Sep84.pdf

Another project (sigh..) has been to collect all the parts to put a Sytek
network together.

I'm looking for a 50/50 Central Retransmission Unit, though I do have the
little brother to it that IBM sold for the PC Network.

http://bitsavers.org/pdf/sytek/brochures/LocalNet_50_50_Central_Retransmission_Unit_Brochure_Sep82.pdf