Properties of S Files and How to Open a File with .s Extension

S files exist as 2 different types. Please find information about each of them below.

Type 1: Source Code File

General Information

Title	S File Extension
Extension	.s
Full Form	Source Code File
File Type	Text File
Developer	Various
MIME Type	text/x-asm

File Function

Primary Function	Contain assembly code
Additional Functions	Direct hardware manipulation, Bootstrapping other software
Features	Low-level, CPU instructions

File Characteristics

Quality	Depends on code
Supports Layers	N/A
Supports Transparency	N/A
Editable	Yes

Use Cases

System Programming	Yes
Embedded Systems	Yes
Performance Critical	Yes

Security and Practices

Security Risks	Vulnerable code
Best Practices	Secure coding, Peer review

Historical/Version Information

Initial Release	Dates back to early computing
Latest Version	Varies by assembler

Associated Types

Similar Extensions

.asm, .bin, .hex

Software Compatibility

Software	Usage Policy	OS Compatibility
GNU Assembler (GAS)	Free	Various Unix, Windows
Microsoft Macro Assembler (MASM)	Free with Visual Studio	Windows
Integrated Development Environments (IDEs)	Free, Paid	Varies

Type 2: Microsoft Train Simulator Shape File

The .S files store shape data for Microsoft Train Simulator. They contain geometry, images, size, texture and lighting effects for the train models. These files allow customizing and displaying locomo...