kumar@wucs1.wustl.edu (Arun Kumar) (12/10/88)
I would like to get in touch with people who are working to implement a communication link with the TAXI chip-set from AMD. I have built a transmitter/receiver pair, using TAXI's, that attempts to transmit a 512*512*8 picture from one frame buffer to another over an optical fiber. For electro-optic and opto-electric conversion I use the ODL200 chip set from AT&T. The circuit used to control the TAXI is built with FAST chips from Fairchild. The FAST logic is wire-wrapped, yet it appears to work as expected. The fast ECL connections between the TAXI's and the ODL200's are on a plain vector board (no ground plane), but are short as short can be. I will soon be putting everything on a 4-layer PCB. I seem to lose about 1 pixel per hundred at transmission speeds of about 70 million bps. I would like to run at the FDDI speed of 125 mbps. The TAXI chip set I have is not the long-promised final- version from AMD, and I suspect that therein lies all the problem. Is there anyone out there working with TAXI's, or implementing ANSI's FDDI standard, who can help or sympathize? --------------------------------------------------------------------- Arun Kumar kumar@wucs1.wustl.edu Box 1045, Computer Science (314)889-6160 Washington University, St. Louis, MO 63130