2A3Fh

2A3Fh is a hexadecimal literal used in some assembly languages to denote a specific numeric value. In hexadecimal notation, the value corresponds to 0x2A3F, which equals 10815 in decimal. The digits used are 0–9 and A–F, with the h suffix indicating hex in many assemblers.

Notation and syntax vary by assembler. The h suffix marks a hexadecimal constant in several Intel-flavor assemblers such as MASM, TASM, and NASM. Because the first character here is a digit, no leading zero is required (unlike some cases where a hex constant starting with a letter would need a leading zero, e.g., 0A3Fh). Some assemblers also accept a 0x2A3F form as an alternative notation, but 2A3Fh is common in traditional hex-annotated code.

Typical usage in low-level programming involves using such literals as immediate operands, memory addresses, or bit masks. For example, 2A3Fh might be used to initialize a register or specify a constant in a jump or comparison, depending on the architecture and the assembler’s syntax.

Conversion details: 0x2A3F in binary is 0010 1010 0011 1111. The decimal value is 10815. Understanding these equivalents helps when cross-referencing values between documentation, code, and data dumps.

There is no broader meaning attached to the sequence 2A3Fh beyond its role as a hexadecimal constant. It is a conventional representation rather than an acronym or standardized identifier, and its interpretation depends on context within source code or data.