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APPENDICES
Number
Name
Set by
(When Set)
Meaning
Explanation
Comment
drive number
This register stores the drive number of the comment selected
by the parameter or the QCDSET instruction.
Corresponding
ACPU
D9†††
SD650
Comment
drive
SD651
This register stores the file name of the comment selected by
the parameter or the QCDSET instruction in ASCII code (with
an extension).
SD652
SD653
SD654
SD655
Comment file
name
SD651
SD652
SD653
SD654
Comment file
name
SD655
SD656
SD656
Boot
designation
file drive
number
SD660
SD661
SD662
SD663
SD664
SD665
Corresponding
CPU
b15
b8
to
2nd character
4th character
6th character
8th character
1st character of
the extension
3rd character of
the extension
b7
b0
to
1st character
3rd character
5th character
7th character
Qn(H)
QnPH
QnPRH
QnU
LCPU
S
(Status
change)
2EH(.)
2nd character of
the extension
This register stores the number of a drive where the boot
designation file (*.QBT) has been stored.
This register stores the name of a boot designation file (*.QBT)
in ASCII code (with an extension).
Boot
operation
designation
file
b15
b8
to
2nd character
4th character
6th character
8th character
1st character of
SD665
the extension
3rd
character of
SD666
the extension
SD661
SD662
SD663
SD664
File name of
boot
designation
file
SD666
b7
b0
to
1st character
3rd character
5th character
7th character
New
Qn(H)
QnPH
QnPRH
QnU*2
LCPU
A
2EH(.)
2nd character of
the extension
This register stores the number of a drive where valid
SD670
Parameter
enable drive
information
Parameter
enable drive
No.
parameters have been stored.*1
• 0: Drive 0 (program memory)
• 1: Drive 1 (SRAM card)
• 2: Drive 2 (Flash card/ATA card)
• 4: Drive 4 (standard ROM)
*1
QnU
For the Q00UJCPU, Q00UCPU, and Q01UCPU, only
drives 0 and 4 are parameter-valid drives.
This register stores the number of a drive where valid
parameters have been stored.
• 0: Drive 0 (program memory)
• 2: Drive 2 (SD memory card)
• 4: Drive 4 (standard ROM)
LCPU
329
Appendix 3 Special Register List
S
(Initial)