| Address | Size | Variable |
|---|---|---|
| 0000 | WORD | x87 FPU Control Word |
| 0002 | WORD | x87 FPU Status Word |
| 0004 | WORD | x87 FPU Tag Word |
| 0006 | WORD | x87 FPU Instruction Pointer (IP) |
| 0008 | WORD | x87 FPU Last Instruction OpCode (OpCode) |
| 000A | WORD | x87 FPU Data Pointer (DataPointer) |
| 000C | WORD | Reserved (Set to 0000h) |
See also: 8087/80287/80387 Control Word, 8087/80287/80387 Status Word, or go back