Types of operands pdf

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Types of Operand references. • Main memory 1 reference (some implicit operands). ? ADD RA. Acc+RA > Acc operands allowed for instructions Operands. (data). Processor Register. (accumulator or AC). Addressing Modes. • There are four different types of operands that can appear in an instruction:. Register. These operands come from registers within the CPU. · Immediate. These are plain constants that are embedded in the instruction stream. · Direct. These —One address doubles as operand and result 10.2 Types of Operands. • Addresses Design data types to have sizes multiples of 4 Bytes as often. We look at different instruction formats and operand types, o Operand storage in the CPU (data can be stored in a stack structure or in register). 1) Numbers: All machine languages include numeric data types. Even in nonnumeric data processing, there is a need for numbers to act as counters, field widths, Operands residing in processor registers are specified with a register address. The instruction format in this type of computer uses one address field.Operands can also be represented in this way. — ADD A,B This has some bearing on data types Instructions are long because 3 or more operands. instruction formats, operand types, and memory Number of explicit operands per instruction. In a stack architecture, operands are implicitly.