Siemens CPU 948 - Page 384

Example
Effect of the "CX DX 17" operation on the DBL:
When DX 17 is called, the number of existing data words is entered in the
DBL register. In this example the DBL is
8 (DW 0 to DW 7)
Note: In the ISTACK, the number entered in the DBL register appears under the
heading "DBL-REG".
5 words
Block header
eeee
ffff
gggg
aaaa
bbbb
cccc
dddd
hhhh
4 151BH
4 151CH
4 151DH
4 151EH
4 151FH
4 1520H
4 1521H
4 1522H
4 1523H
4 1524H
4 1525H
4 1526H
4 1527H
DW 0
DW 1
DW 2
DW 3
DW 4
DW 5
DW 6
DW 7
DBA
DBL
Addresses
DX17
Fig. 9-6 Using the DBL register
Memory Access via Address in ACCU 1
CPU 948 Programming Guide
9 - 14 C79000-G8576-C848-04