Levi's TI-86 - Learn ASM from the start or just find some help in the tutorials. Good examples (with source). Bulletin board. - http://levi.sardonica.net/ti/
TI-86 Assembly Tutorial - Teach the reader how to program assembly for the ti86 graphic calculator from Texas Instruments. It will start with the theory behind assembly and will go on to cover instructions, ROM calls, assembler directives and some of the advanced graphics function - http://www.asm86.cwc.net/tutorial/
TI-85 Assembler Programming - Contains lessons on how to program the TI-85 calculator in Z80 assembly language, designed for beginners in Z80 programming. - http://www.sealiesoftware.com/ti-asm/
Programming - ticalc.org - Assembler resources, tutorials, program ideas, and emulators for the TI calculators. - http://www.ticalc.org/programming/index.html#asm