Motorola MVME166IG/D2 - Manual (Page 36)

Board Level Hardware Description
1-22 MVME166 Single Board Computer Installation Guide
1
VMEbus Memory Map
This section describes the mapping of local resources as viewed by VMEbus
masters. Default addresses for the slave, master, and GCSR address decoders
are provided by the ENV command. Refer to Appendix A.
VMEbus Accesses to the Local Bus
The VMEchip2 includes a user-programmable map decoder for the VMEbus
to local bus interface. The map decoder allows you to program the starting
and ending address and the modifiers the MVME166 responds to.
VMEbus Short I/O Memory Map
The VMEchip2 includes a user-programmable map decoder for the GCSR.
The GCSR map decoder allows you to program the starting address of the
GCSR in the VMEbus short I/O space.
VSB Memory Map
This section describes the mapping of local resources as viewed by VSB
masters. The VSBchip2, on the MVME166, includes a user-programmable
map decoder for the VSB to local bus interface. This map decoder allows VSB
masters access to devices on the local bus. Default addresses for the slave,
master, and address decoders are provided by the ENV command. Refer to
Appendix A.