3000 E (250-4002) Math Coprocessor Faxback Doc. # 1036 Check Math Co-processors for the current catalog number for the Tandy 3000 Enhanced. There is a socket on the main logic board at location U46 for the math co-processor. The 3000 Enhanced comes jumpered for an 8 MHZ co-processor: E44-E45 & E48-E49 If the optional 10MHZ co-processor is used, the oscillator chip must be replaced with a 10 MHZ* oscillator chip. Change the jumper configuration to: E44-E45 & E47-E48. (smm 08/06/93)