Specifications

EPC-7 Hardware Reference
Supported Address Modifiers
77
2Dh A16 supervisor
39h A24 non-privileged data
3Ah A24 non-privileged program
3Dh A24 supervisor data
3Eh A24 supervisor program
09h A32 non-privileged data
0Ah A32 non-privileged program
0Dh A32 supervisor data
0Eh A32 supervisor program
Table 17. Supported Address Modifiers.
Low-Level Programming the VMEbus Interface
It is recommended that rather than performing accesses in this low-level hardware de-
pendent form, the BusManager component of the EPConnect software package be
used instead.
VMEbus Accesses
Two examples are given here including both a verbal description and the Microsoft C
source code for performing VMEbus accesses through the "E" page.
Example #1 performs a 16-bit read from the VMEbus A16 space.
1. Set the EVME access bit in Register 8102.
2. Determine the correct address modifier for A16 supervisory access (2Dh)
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