TANDY 1000 SX  (250-1051)      Math Coprocessor       Faxback Doc. # 1187

There is a socket on the main logic board at location U33 for the math 
co-processor.  Remove jumper E3-E4 to initialize math co-processor.
Use an Intel 8087 Math Co-Processor.

Note: Refer to Faxback Doc. # 9002 for the specific Catalog Number to 
order this part.