| Min version | XP | |
|---|---|---|
| Max version | Vista SP2 | |
| Architecture | x86 | |
| x86 offset offset:bitpos | Field Name | x64 offset offset:bitpos |
| 0x0000 | uint16_t ControlWord | |
| 0x0002 | uint16_t StatusWord | |
| 0x0004 | uint16_t TagWord | |
| 0x0006 | uint16_t ErrorOpcode | |
| 0x0008 | unsigned long ErrorOffset | |
| 0x000C | unsigned long ErrorSelector | |
| 0x0010 | unsigned long DataOffset | |
| 0x0014 | unsigned long DataSelector | |
| 0x0018 | unsigned long MXCsr | |
| 0x001C | unsigned long MXCsrMask | |
| 0x0020 | uint8_t[128] RegisterArea | |
| 0x00A0 | uint8_t[128] Reserved3 | |
| 0x0120 | uint8_t[224] Reserved4 | |
| 0x0200 | uint8_t[8] Align16Byte |