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00, Opcodes 00 to 3F/Decimal 0 to 63; RR instruction, generally two registers; 01, Opcodes 40 to 7F/Decimal 64 to 127; RX instruction, one register and one There are several types of instructions which are now available on all models, the 360, System/370 ("370" or "S/370"), ESA/390 ("390"), and z/System ("Z") type
5.2.1. ADD and SUB, low registers Add and subtract. There are three forms of these instructions that operate on low registers. You can: add or subtract the contents of two registers, and place the result in a third register add a small integer to, or subtract it from, the value in a register, and.
Operation[edit]. The SR instruction reads 32-bit integer value from the register specified by the second argument and subtracts it from the value of register specified by the first argument. To subtract by double word value from the full 64-bit double word of both registers on the z/Series, see SGR. 360 Assembly Language.
instructions. Today ESA/390 has 160 general instructions z/Architecture has 280 general instructions. Principles of Operation is approaching 1000 pages . Retrofits from z/Architecture. Add Logical With Carry (ALC, ALCR),. Subtract Logical With Borrow (SLB, SLBR). Allow more efficient 64-bit addition and subtraction.
Mainframe Assembler. Mini-Reference. Instruction Formats. Note: In the following, only some 32-bit unprivileged instructions of zArchitecture are described. So register refers to low 32-bit portions of 64-bit general zArchitecture registers. Also, certain special cases are omitted for simplicity. Byte. Fmt. 1. 2. 3. 4. 5. 6. I. Op. I1.
Understand the basics of assembler programming on System z. – Use a variety of simple machine instructions All registers are numbered 0-15; the instructions used distinguish which 0-15 means which register. ? A WORD > 32-bits, SUBTRACT REGISTER 2 TO REGISTER 1 (LOGICAL). S 1,NUMBER. SUBTRACT
This document is intended to be used as a quick reference for the mainframe Assembler programmer using HLASM (High Level Assembler) or Assembler/H. Instruction Overview. A, Add. AH, Add Halfword. AL, Add Logical. ALR, Add Logical Registers. AP, Add Packed (Decimal). AR, Add Registers. BAL, Branch and Link.
Add, Compare Decimal (packed), Multiply (registers), Subtract Decimal (packed). Add Halfword, Compare Registers, Move Characters, Set Program Mask. Add Logical, Compare and Swap, Move Inverse, Subtract (registers). Add Logical Register, Convert to Binary, Move Characters Long, Shift Right Single. Add Decimal
Recent site activity. PSW (Program Status Word). attachment from boss jhonson. XOR instructions. edited by boss jhonson. OR instructions. edited by boss jhonson. AND instructions. edited by boss jhonson. Multiply. edited by boss jhonson. View All · Home > Mnemonics > ?
This edition obsoletes and replaces z/Architecture Principles of Operation, SA22-7832-02. This publication is 1-1. General Instructions for 64-Bit Integers . . 1-2. Other New General Instructions . . . . . . 1-2. Floating-Point Instructions . . . . . . . . . . 1-4. Control Instructions . HFP Multiply-and-Add/Subtract Facility . . 1-7.
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