Technical data

Example
Register 15: SAC = Step
Address Counter
During STEP 5 program execution, register 15 contains the absolute
address of the operation in the program memory to be processed next.
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
1516H
1517H
1518H
1519H
151AH
151BH
151CH
151DH
151EH
151FH
1520H
1521H
1522H
DW 0
DW 1
DW 2
DW 3
DW 4
DW 5
DW 6
DW 7
D
BA
DBL
Addresses
DX17
Fig. 9-6 Using the DBL register
9
Access using the Address in ACCU 1
CPU 928B Programming Guide
C79000-B8576-C898-01
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