El-l,2 Internally loops the RTS and CTS signals on the SIO port 2. E1-1,3 Connects CTS on the port header to the SIO port 2. El-2,4 Connects RTS on the port header to the SIO port 2. E2 Functional description is the same as for jumper location E1 but is for SIO port 1. E3-1,2 Connects 19.6608 Mhz baud rate crystal to divide by sixteen counter. Must be present for proper operation. E4-1,2 Internally loops the RTS and CTS signals on the diagnostic SIO port. E4-1,3 Connects CTS on the diagnostic port header to the SIO. E4-2,4 Connects RTS on the diagnostic port header to the SIO. E5 Functional description is the same as for jumper location EI but is for SIO port 4.
E6 Functional description is the same as for jumper location E1 but is for SIO port 3. E7 Functional description is the same as for jumper location E1 but is for SIO port 5. E8-1,2 Connects 32 Mhz oscillator to divide by two circuit to run the 186 CPU. Must be present for proper operation. E9-1,2 Creates a flag for the BANKSEL 1 pal so that either 128K or 256K bit rams can be used in the memory expansion slots J8 and J9. EI0-1,2 Connects the 4 Mhz Z80 cloc~ Must be present for proper operation of the Z80. A-2