Mitsubishi A1SH, Руководство пользователя, Страница: 173 / 186

APPENDICES
APP - 39
MELSEC-A
Appendix 3.3.6 Switching from the A2SMCA-14KP (when A2SMCA-14KP has been used)
When A A2SNMCA-30KE was switched, *1 area cannot be used as the
extension file register.
When *1 area has been used as the extension file register, the system of
A2ASCPU(-S1) + A2SMCA-14KP should be used.
Internal RAM
memory area
(64 k bytes)
(a) In RAM operation
Not usable
Parameter area
T/C set values area
Parameter area
T/C set values area
Sequence program area
(required min. 1 k step)
Sequence program area
(required min. 1 k step)
Microcomputer program area
Microcomputer program area
Extension file
register area
Extension file
register area
Sampling trace area
Status latch area
File register area
Comment area
(b) In E 2 PROM operation
Unused
Unused Unused
Not usable
(used by system)
*1
Sampling trace area
File register area
Comment area
3 k bytes
1 k byte
1 to 14 k steps
(2 to 28 k bytes)
Status latch area
Stored in
ROM
Memory write
protect range
(32 k bytes)
Usable with
SW0GHP-
ULTP-FN1.
ROM memory capacity
(max. 64 k bytes)
Appendix 3.3.7 Restrictions in microcomputer programs
When a customer used the microcomputer mode, the following changes are made
in the microcomputer instructions.
Change points by switching to AnSHCPU from AnSCPU Corrective action method
When REP LODSW and REP LODSB instructions are used
AnSCPUThe ................ contents of a memory shown by the S1
register for the number of times specified in CX
register,, are transfered to the register of AL (8
bits operation) or AX (16 bits operation).
Aafter the instructions have been executed, the
CX register value becomes 0.
AnSHCPU.................... The contents of a memory shown only once by
the S1 register regardless of the value of the CX
register,, are transfered to the register of AL (8
bits operation) or AX (16 bits operation).
After the instructions have been executed, the
CX register value does not change.
The following example for the program
should be revered.
Program example
STD STD
MOV CX.3 MOV CX.3
REP LODSB
→
A : LODSB
Loop A