MMIX Instruction Set
Content
Storing Unsigned Data
Name:| STBU $X,$Y,$Z | STBU $X,$Y,Z |
| STWU $X,$Y,$Z | STWU $X,$Y,Z |
| STTU $X,$Y,$Z | STTU $X,$Y,Z |
| STOU $X,$Y,$Z | STOU $X,$Y,Z |
Specification:
With A ← $Y+$Z respectively A ← $Y+Z we have:
| STBU: u(M1[A]) | ← u($X) mod 28 |
| STWU: u(M2[A]) | ← u($X) mod 216 |
| STTU: u(M4[A]) | ← u($X) mod 232 |
| STOU: u(M8[A]) | ← u($X) |
Timing:
1μ + 1υ
Description:
Writes one byte, wyde, tetrabyte, or octabyte to main memory. No overflow will occur.
The address A is rounded down, if necessary, according to the alignment requirements. Addresses for octabytes must be a multiple of 8, for tetrabytes a multiple of 4, and for wydes a multiple of 2.
See also:
