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IBM 5280 Distributed Data System - Index of

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Binary Register AND with Base Displacement Address (&=)Source:Object:T&=~BAI I I0 8 i~~ 31DB 1111IID Result/factor 1: The address <strong>of</strong> the binary register that contains factor 1and will contain the result <strong>of</strong> this instruction.fJ Bit 15:o = Length <strong>of</strong> factor 2 is 2.1 = Length <strong>of</strong> factor 2 is 1.II Base address register: The address <strong>of</strong> the binary register that contains thebase address.II Address bit:0= BRa contains a 16-bit address.1 = BRa(4) contains a 20-bit address <strong>of</strong> a storage location outside thepartition.II Factor 2 displacement: The number <strong>of</strong> bytes (hex OO-FF) from the baseaddress where factor 2 is stored.The factor 2 displacement is added to the base address register contents, factor 1is ANDed with the contents <strong>of</strong> the resulting address, and the result is placed intothe factor 1 register.Object Code Instruction Format 267

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