Table 5.3.1-1. Address Selection Jumpers
Short I/O Address Bit
Jumper #
(installed=0
removed=1)
A15
E1*
A14
E6*
A13
E7*
A12
E8*
A11
E9*
A10
E2*
A9
E3*
A8
E4*
A7
E5*
* installed for factory default address of $0000
500-003124-000
5-3
To change the address, first determine the new address in hexadecimal (note
that the address must be an even multiple of 128 decimal, or $80). Convert the
address to binary and assign the address bits A0 through A15 to the binary address,
starting from the least significant bit. Then check Table 5.3.1-1. All clear bits should
have a jumper installed on the corresponding address bit jumper, and all set bits
should have a jumper removed.
For example, assume a target address of $3A00 is desired. In binary, that
number is %0011 1010 0000 0000. Assigning address bits to these shows that only
bits A13, A12, A11, and A9 are set. Check Table 5.3.1-1. All jumpers should be
installed (for the clear address bits) except for jumpers E7, E8, E9, and E3 (for the set
address bits).
5.3.2
Address Modifier
Jumper E10 determines whether the VMIVME-3124 responds to supervisory
or nonprivileged accesses according to Table 5.3.2-1.