W65C816S in the context of Machine code

W65C816S in the context of Machine code

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⭐ Core Definition: W65C816S

The W65C816S (also 65C816 or 65816) is a 16-bit microprocessor (MPU) developed and sold by the Western Design Center (WDC). Introduced in 1985, the W65C816S is an enhanced version of the WDC 65C02 8-bit MPU, itself a CMOS enhancement of the venerable MOS Technology 6502 NMOS MPU. The 65C816 is the CPU for the Apple IIGS and, in modified form, the Super Nintendo Entertainment System.

The 65 in the part's designation comes from its 65C02 compatibility mode, and the 816 signifies that the MPU has selectable 8- and 16-bit register sizes. In addition to the availability of 16-bit registers, the W65C816S extends memory addressing to 24 bits, supporting up to 16 megabytes of random-access memory. It has an enhanced instruction set and a 16-bit stack pointer, as well as several new electrical signals for improved system hardware management.

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👉 W65C816S in the context of Machine code

In computing, machine code is data encoded and structured to control a computer's central processing unit (CPU) via its programmable interface. A computer program consists primarily of sequences of machine-code instructions. Machine code is classified as native with respect to its host CPU since it is the language that the CPU interprets directly. A software interpreter is a virtual machine that processes virtual machine code.

A machine-code instruction causes the CPU to perform a specific task such as:

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W65C816S in the context of Native code

In computing, machine code is data encoded and structured to control a computer's central processing unit (CPU) via its programmable interface. A computer program consists primarily of sequences of machine-code instructions. Machine code is classified as native with respect to its host CPU since it is the language that the CPU interprets directly. Some software interpreters translate the programming language that they interpret into a virtual machine code (bytecode) and process it with a P-code machine.

A machine-code instruction causes the CPU to perform a specific task such as:

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LINKED FROM (PARENTS)
← Machine code ← Machine language ← Machine instructions ← Native code ← Machine instruction
LINKS TO (CHILDREN)
Microprocessor → Western Design Center → WDC 65C02 → 8-bit computing → CMOS → MOS Technology → MOS Technology 6502 → NMOS logic → Apple IIGS → Super Nintendo Entertainment System → 16-bit computing → Processor register → Memory address → 24-bit computing → Megabyte → Random-access memory → Call stack →