| s($X) ← |
| ⌊s($Y) / s($Z)⌋ | if $Z ≠ 0 |
| 0 | if $Z = 0 |
the integer part of the Quotient and
| s(rR) ← |
| s($Y) mod s($Z) | if $Z ≠ 0 |
| s($Y) | if $Z = 0 |
the remainder in special register rR.
| ADD $X,$Y,$Z | ADD $X,$Y,Z |
| SUB $X,$Y,$Z | SUB $X,$Y,Z |
| MUL $X,$Y,$Z | MUL $X,$Y,Z |
| DIV $X,$Y,$Z | DIV $X,$Y,Z |
Specification:
| ADD: s($X) | ← s($Y) + s($Z) | ||||||||||||
| SUB: s($X) | ← s($Y) - s($Z) | ||||||||||||
| MUL: s($X) | ← s($Y) * s($Z) | ||||||||||||
| DIV: |
the integer part of the Quotient and
the remainder in special register rR. |
All instructions exist in two variants. The second operand can either be a register $Z or an immediate value Z.
Timing:
| ADD: | 1υ |
| SUB: | 1υ |
| MUL: | 10υ |
| DIV: | 60υ |
Description:
These are instructions for computations with signed integers. The instructions record exceptions like overflow or division by zero in special register rA and, if enabled, cause a TRIP.
See also: