&KDSWHU
7+(25< 2) 23(5$7,21
90( *DWHZD\
For data transfers from LINK to the VME, LINK writes the appropriate datum and sets
the flag bit, but thereafter ignores the flag until the next write to the same location. In
this manner, the VME programmer is afforded the maximum flexibility in the software
design. The "current" value in a relevant location can be scanned and treated as
current, or the flags can be used to look for data that has been changed since the last
check of the flags.
Note. Throughout the balance of this manual, writes and reads will be
referenced by address and by flag byte in the following manner:
Write word 1 ($19A) and set Flag $294.1
This example defines a transfer from LINK to the VME, which is
specified by the location in memory affected. It affects the second
word (from word zero), and sets the Flag bit 1 (second bit) in address
$294.
