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App-177
8
8
8
8
A
8
7
8
Appendix 4 SPECIAL REGISTER LIST
(6) Instruction-Related Registers
TableApp.4.8 Special register
Number Name Meaning Explanation
Set by
(When Set)
Corres-
ponding
ACPU
D9
Corresponding
CPU
SD705
Mask pattern Mask pattern
• During block operations, turning SM705 ON makes it possible to use the
mask pattern being stored at SD705 (or at SD705 and SD706 if double
words are being used) to operate on all data in the block with the
masked values.
UNew
Q00J/Q00/Q01
Qn(H)
QnPH
QnPRH
SD706
SD715
IMASK
instruction mask
pattern
Mask pattern
• Patterns masked by use of the IMASK instruction are stored in the
following manner:
S (During
execution)
New
QCPU
SD716
SD717
SD718
Accumulator Accumulator • For use as replacement for accumulators used in A series programs. S/U New
SD719
SD720
Program No.
designation for
PLOADP
instruction
Program No.
designation for
PLOADP
instruction
Stores the program number of the program to be loaded by the PLOADP
instruction when designated.
Designation range: 1 to 124
UNew
Qn(H)
QnPH
SD738
Message
storage
Message storage
• Stores the message designated by the MSG instruction.
S (During
execution)
New QCPU
SD739
SD740
SD741
SD742
SD743
SD744
SD745
SD746
SD747
SD748
SD749
SD750
SD751
SD752
SD753
SD754
SD755
SD756
SD757
SD758
SD759
SD760
SD761
SD762
SD763
SD764
SD765
SD766
SD767
SD768
SD769
SD715
SD716
SD717
l15
l1
l0
l31
l47
l17
l33
l16
l32
b15 b0
b1
to
to
to
SD738
SD739
SD740
SD741
SD742
SD743
b15
to
b8 b7
to
b0
SD744
SD745
SD746
SD747
SD748
SD749
SD750
SD751
SD752
SD753
SD754
SD755
SD756
SD757
SD758
SD759
SD760
SD761
SD762
SD763
SD764
SD765
SD766
SD767
SD768
SD769
2nd
character 1st character
4th character 3rd character
6th character 5th character
8th character 7th character
10th character 9th character
12th character 11th character
14th character 13th character
16th character 15th character
18th character 17th character
20th character 19th character
22nd character 21st character
24th character 23rd character
26th character 25th character
28th character 27th character
30th character 29th character
32nd character 31st character
34th character 33rd character
36th character 35th character
38th character 37th
character
40th character 39th character
42nd character 41st character
44th character 43rd character
46th character 45th character
48th character 47th character
50th character 49th character
52nd character 51st character
54th character 53rd character
56th character 55th character
58th character 57th character
60th character 59th character
62nd character 61st character
64th character 63rd character