egcuneo@rodan.acs.syr.edu (Ed Cuneo) (02/20/91)
i have a question regarding a weitek 3167 33 mhz math coprocessor if the chip looks like this 0000000000000 0000000000000 0000000000000 000 000 000 000 000 000 000 000 000 000 000 000 000# 000 0000000000000 0000000000000 0000000000000 a guy i work with has unfortunately broken off the pin denoted with a # i'm wondering if i have an $800.00 paper weight or if it might still work can anyone shed light on if there is a way to use this or fix it? any chance weitek has a repair procedure? every little bit of info helps thanks ed cuneo egcuneo@rodan.acs.syr.edu
philhowr@unix.cie.rpi.edu (Bob Philhower) (02/21/91)
In article <1991Feb20.013116.4537@rodan.acs.syr.edu> egcuneo@rodan.acs.syr.edu (Ed Cuneo) writes: >i have a question regarding a weitek 3167 33 mhz math coprocessor >a guy i work with has unfortunately broken off the pin denoted with a # >i'm wondering if i have an $800.00 paper weight or if it might still work >can anyone shed light on if there is a way to use this or fix it? >any chance weitek has a repair procedure? >every little bit of info helps There is practically no chance of a repair procedure. The whole ceramic package is hermetically sealed and it would probably cost far more than $800 to open it up, replace a pin, prepare the surfaces for sealing again, and reseal all in a clean-room. I'd advise your friend to first look at the pin-out for the chip and see what that pin does. (There's a chance it will be N/C -- no connection -- in which case you are home free.) If not, if it is a power supply pin, you may be able to get away with the degraded supply. Do you feel lucky? Robert Philhower (philhowr@unix.cie.rpi.edu) Rensselaer Center for Integrated Electronics CII 6111 / Rensselaer Polytechnic Institute / Troy, NY 12180 / USA