Commentary by cpressey on Z80 works
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### Thomas Scherrer Z80-Family Official Support Page

Lots of good info about the Z80, including how to make a crystal oscillator to
serve as its clock circuit, and a handy listing of the Z80 opcodes:
[http://www.z80.info/z80code.txt](http://www.z80.info/z80code.txt).

### TI-85 Assembler Programming

### Part II: How to «open» microchip and what's inside? Z80, Multiclet, MSP430, PIC and more : ZeptoBars