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App-173
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Appendix 4 SPECIAL REGISTER LIST
*3: The Universal model QCPU except the Q00UJCPU.
*4: The Universal model QCPU except the Q00UJCPU, Q00UCPU, and Q01UCPU.
*10: On the Basic model QCPU, data is set at STOP to RUN or RSET instruction execution after parameter execution.
TableApp.4.7 Special register
Number Name Meaning Explanation
Set by
(When Set)
Corres-
ponding
ACPU
D9
Corresponding
CPU
SD641
File register file
name
File register file
name
• Stores file register file name (with extension) selected at parameters or
by use of QDRSET instruction as ASCII code.
S (Status
change)
New
Qn(H)
QnPH
QnPRH
QnU
*3
SD642
SD643
SD644
SD645
SD646
• Stores file register file name (MAIN.QDR) selected at parameters as
ASCII code.
S (Initial) New Q00J/Q00/Q01
SD647
File register
capacity
File register
capacity
• Stores the data capacity of the currently selected file register in 1 k word
units.
S (Status
change)
New
Qn(H)
QnPH
QnPRH
QnU
*3
S (Initial) Q00J/Q00/Q01
SD648
File register
block number
File register block
number
• Stores the currently selected file register block number.
S (Status
change) *10
D9035
Q00J/Q00/Q01
Qn(H)
QnPH
QnPRH
QnU
*3
SD650 Comment drive
Comment drive
number
• Stores the comment drive number selected at the parameters or by the
QCDSET instruction.
S (Status
change)
New
Qn(H)
QnPH
QnPRH
QnU
SD651
Comment file
name
Comment file
name
• Stores the comment file name (with extension) selected at the
parameters or by the QCDSET instruction in ASCII code.
S (Status
change)
New
SD652
SD653
SD654
SD655
SD656
SD660
Boot operation
designation file
Boot designation
file drive number
• Stores the drive number where the boot designation file (*.QBT) is being
stored.
S (Initial) New
Qn(H)
QnPH
QnPRH
QnU
*4
SD661
File name of boot
designation file
• Stores the file name of the boot designation file (*.QBT).
S (Initial) New
SD662
SD663
SD664
SD665
SD666
SD641
SD642
SD643
SD644
SD645
SD646
b15
to
b8 b7
to
b0
2nd character 1st character
4th character 3rd character
6th character 5th character
8th character 7th character
2E
H(.)
2nd character of
the extension
1st character of
extension
3rd character of
the extension
SD6
41
SD642
SD643
SD644
SD645
SD646
b15
to
b8 b7
to
b0
2nd character (A) 1st character (M)
4th character (N) 3rd character (I)
6th character ( ) 5th character ( )
8th character ( ) 7th character ( )
2E
H(.)
2nd character of
the extension (D)
1st character of
the extension (Q)
3rd character of
the extension (R)
SD651
SD652
SD653
SD654
SD655
SD656
b15
to
b8 b7
to
b0
2nd character 1st character
4th character 3rd character
6th character 5th character
8th character 7th character
2E
H(.)
2nd character of
the extension
1st character of
the extension
3rd character of
the extension
SD661
SD662
SD663
SD664
SD665
SD666
b15
to
b8 b7
to
b0
2nd character 1st character
4th character 3rd character
6th character 5th character
8th character 7th character
2E
H(.)
2nd character of
the extension
1st character of
the extension
3rd character of
the extension