Altera cyclone V Technical Reference page 251

cv_5v4
2016.10.28
initswstate
The preloader software (loaded by the Boot ROM) writes the magic value 0x49535756 (ISWV in ASCII) to
this register when it has reached a valid state.
Module Instance
sysmgr
Offset:
0xC8
Access:
RW
31 30
15 14
initswstate Fields
Bit
31:0
value
initswlastld
Contains the index of the last preloader software image loaded by the Boot ROM from the boot device.
Module Instance
sysmgr
Offset:
0xCC
Access:
RW
Important: To prevent indeterminate system behavior, reserved areas of memory must not be accessed by
System Manager
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0xFFD08000
29 28 27 26
13 12 11 10
Name
Written with magic value.
0x0
0x49535756
0xFFD08000
software or hardware. Any area of the memory map that is not explicitly defined as a register
space or accessible memory is considered reserved.
Base Address
Bit Fields
25 24 23 22
value
RW 0x0
9 8 7 6
value
RW 0x0
Description
Value
Base Address
initswstate
Register Address
0xFFD080C8
21 20 19 18
5 4 3 2
Access
Description
Register Address
0xFFD080CC
5-57
17 16
1 0
Reset
RW 0x0
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