MAN0964-14-EN_XL4_XL4P_UM
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16.14 System Registers used with RM
%SR174
–
Removable Media Protect. Write a one (1) to %SR174 to prohibit read/write access to
the removable media card. Write a zero (0) to allow access.
%SR175 Status
–
This shows the current status of the RM interface.
%SR176 Free Space
–
This 32-bit register shows the free space on the RM card in bytes.
%SR178 Card Capacity
–
This 32-bit register shows the total card capacity in kilobytes.
Possible status values are shown in the table:
Table 16.3
–
RM Status Values
0
RM interface OK
1
Card present but unknown format
2
No card in slot
3
Card present, but not supported
4
Card swapped before operation was complete
5
Unknown error