Ties to 8- or 16-bit those instructions that aren't M/X-dependent.
Ties to 8- or 16-bit those instructions that aren't M/X-dependent.

This is technically redundant for PEI, PEA and PER since they have dedicated bus programs anyway, but it's good to be explicit.

TomHarte/CLK,TomHarte/CLK,TomHarte/CLK,TomHarte/CLK,TomHarte/CLK