TASM

TASM (Turbo Assembler) is a software assembler for x86 architecture released by Borland as part of the Turbo family. It was designed to produce machine code from assembly language for 8086, 80286, and 80386 era systems and was used on DOS and early Windows platforms. TASM provided support for macro assembly, local labels, conditional assembly, and a range of directives to control segments, data types, and symbol visibility. The tool included an integrated assembler that could produce object modules compatible with Borland's linkers and could be used in conjunction with Borland's other development tools such as Turbo Pascal, Turbo C, and Turbo Debugger.

TASM offered multiple options for syntax and instruction encoding, and aimed to ease porting of code coming from other assemblers. It was commonly used by systems programmers, game developers, and hobbyists who needed direct control over x86 machine code and performance-tuned routines. The package was distributed as part of the Turbo Assembler suite and was frequently used in DOS-era software development, with some use continuing into early Windows environments through compatibility layers and emulation.

Over time, Borland reduced its emphasis on stand-alone assemblers as its toolchains evolved and modern development moved toward integrated environments and alternative assemblers. TASM is now considered legacy software, of interest primarily to retro computing enthusiasts, historians, and those maintaining older DOS-based code bases.