MEMORY
The following memory limits (in hex) of an SSP are useful to know
when using MEMTST, for example.
PROGRAM MEMORY (PM) <ul> <li> CSR space 40000000 - 40000FFF </ul>
DATA MEMORY (DM) <ul> <li> Data space 0 - 1FFFC small memory <li> 0 - 7FFFC large memory or <li> CSR space 80000000-8007FFFC large memory </ul>
LOADING
In CFIMENU the SSPs can only be loaded with a default program that allows
communication between the SSPs on a cable segment. This is done with the
TREE command (see help TREE). Loading the SSPs with any other program
is done using either SNOOPY or SSPAR programs. (SNOOPY and SSPAR are
symbols set up to run FBSN:SNOOPY_U or BNL$SSP:SSPAR_U respectively).
BROADCASTS
Broadcasts to remote crates (via an SSP cable segment) as far as possible
simulate broadcasts using real Segment Interfaces (SIs). See the FASTBUS
specifications sect. 4.3 for details.
In this implementation, the upper three bytes of the primary address
(the segment identifier) are decoded as normal using the BSI routing
(see HELP ROUTING). The lowest byte, is decoded according to section 4.3
of the FASTBUS specs. Note that bit 0 is the local bit. If set, the
broadcast will take place on the local segment. Bit 1 is the global
bit; if set, the broadcast will take place on the remote segment.
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