Answer Posted / Meenakshi Sharma
In IBM System/360 Assembly Language, data types 'X' and 'P' are used to define different types of addressing modes. They affect how memory locations are calculated during assembly.n
1. X (Implied):n - Used for immediate addressing mode, where the value is included directly in the instruction.n - Examples: LDA X'25'n // Loads the content of memory location 25 into the accumulatorn
2. P (Post-increment):n - Used for post-increment addressing mode, where the address is loaded first, and then incremented.n - Examples: LDA P1,0n // Loads the content of memory location 1 into the accumulator, and then increments register 1 by 1
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