2.4.5.6. - VME Hardware Functions
The type of data access and/or VME address modifier
for the following functions can be selected
with the optional argument
dmode
as follows (if more than one option is needed, make a comma-separated
list in the single string argument):
"D8" - byte access
"D16" - short-word access
"D32" - long-word access, but only available with
vme_get32() and
vme_put32().
"DPRT" - use the address modifier appropriate for
dual-port memory access, on adapters that support it.
"amod=0xXX" - specify the hexadecimal value for the address modifier.
The default mode for the A16 access functions
vme_get() and
vme_put() is D8.
The default mode for the A32 access functions
vme_get32() and
vme_put32() is D32.
Not all VME adapters supported by spec support A32 access.
There are currently no functions for A24 access.
vme_get(addr [, dmode ])-
Returns the data at
addr
in the 64K A16 address space.
vme_put(addr, data [, dmode ])-
Writes
data
to
addr
in the 64K A16 address space.
vme_get32(addr [, dmode ])-
Returns the data at
addr
in the A32 address space.
vme_put32(addr, data [, dmode ])-
Writes
data
to
addr
in the A32 address space.
vme_move(from, to [, cnt [, dmode ]])-
Copies data between a spec data array and VME A32 address space.
One of the
from
and
to
arguments must be the name of a spec data array while
the other must be a VME address.
If the optional argument
cnt
is present, it designates how many data items (not bytes) to copy.
If missing or zero, the number of elements in the array is copied.
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