t1asm

t1asm [options] input_file

-o output_file
    Specifies the output file name.

-b
    Create a binary file instead of an executable.

-l
    Generate a listing file.

-i include_path
    Add a directory to the include path.

-v
    Enable verbose output.

-Dsymbol=value
    Define a preprocessor symbol.

-w
    Disable warnings.

t1asm is a versatile assembler designed for creating programs for the Texas Instruments TI-83+ graphing calculator. It takes assembly language source code as input and translates it into machine code compatible with the Z80 microprocessor used in the TI-83+. The assembler supports a wide range of Z80 instructions, directives, and macros, allowing programmers to create complex and efficient applications for the calculator.

t1asm is often used in conjunction with other tools in the TI-83+ development ecosystem, such as disassemblers and emulators, to create, debug, and test programs. It offers features for managing memory allocation, handling interrupts, and interfacing with the calculator's hardware. This allows developers to extend the functionality of their calculators and create games, utilities, and other custom software.

t1asm is specifically designed for the TI-83+ calculator and may not be compatible with other platforms or Z80-based systems without modifications. Syntax and directives might differ from other Z80 assemblers. It also has limited debugging capabilities; often, emulators are needed for extensive debugging.

When t1asm encounters an error, it attempts to provide informative error messages, including the line number and a description of the error. These error messages can be invaluable for debugging assembly code. However, understanding Z80 assembly language and the TI-83+'s memory model is often necessary to fully interpret the error messages.

t1asm was developed as a tool to create assembly programs for the TI-83+ graphing calculator. The exact development history is difficult to trace, as many such tools were created within the TI calculator community. It gained popularity among TI-83+ programmers for its relatively simple syntax and its ability to generate compact, fast code. It provided an alternative to using the limited onboard programming environment of the calculator itself, enabling more complex applications and games to be developed.

make(1), ld(1), objdump(1)