[The first register or number after 'UD S' is used as a key
for retrieving the desired register set stored there
previously. In the above example, let us assume X0 has the
value 4. The system then searches the file for the first
entry under this key number. If this entry consisted of the
line
4 3 -1.5 30.8 0.0
then the values -1.5, 30.8, and 0.0 are put into the registers X15, X20, and X50, respectively.]
[If more registers are specified in the 'UD' command than
were used in the 'SD' command creating the entry, an error
message is printed out. In the above example, a command
UD S X0,X15,X20,X50,X28
would produce an error statement because the number of registers exceeds the number in the corresponding 'SD' operation.]
NOTES