In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Peter Van der Zee wrote:

Well no, they are totally different issues.

Turbo refers to the mode the SX is operating in; that is downward compatible with some (1655??) PIC's reduced feature set. Hi-Z refers to an output's being temporarily disconnected so it neither sinks or sources. Inputs are always (relatively) Hi-Z.

TTL/CMOS depends somewat on your application. In the many years I have been programming the SX, I have never yet used TTL. I like the concept of the processor switching at half of Vcc. It allows me to play a lot of analog tricks with the SX.

Cheers,

Peter (pjv)

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