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Assembler language – Mainframe

Registers: 16 general purpose 32 bit registers numbered 0 through 15. 4 64 bit floating point registers.   Addressing – Register: the operand is in the register. Example: AR R2,R3 *Contents of R3 added to R2, result remains in R2 SR R3,R4 *Contents of R4 subtracted from R3, result in R3 LR R4,R5 *Contents of […]

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