Gcodes supported by StarCNC ( Oct 2019 )
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G00 Rapid positioning
G01 Linear interpolation with feedrate
G02 Circular/helical interpolation CW
G03 Circular/helical interpolation CCW
G04 Dwell (in milliseconds)


G17 Selection of the X-Y plane
G18 Not Supported   (Z-X plane )
G19 Not Supported   (Y-X plane ) 

G20 (Ignored) Inch input  
G21 (Ignored) Metric input

G28 Return to home position    ( future support on USB32)  

G53 Move to Machine coordinate ( future support on USB32)  
G54-G59 Work coordinate system

G73 Peck drilling cycle
G80 Canned cycle cancel
G81 Simple drilling cycle
G82 Drilling cycle with dwell
G83 Peck drilling cycle
G84 Righthand tapping cycle

G90 Absolute programming
G91 Incremental programming
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Standard M codes
M00 Program Pause 
M02 Program end

M03 Spindle on CW
M04 Spindle on CCW
M05 Spindle stop
M06 Tool change S=rpm

M08 setaux out1 On
M09 setaux out1 Off

M10 setaux out2 On
M11 setaux out2 Off

M30 End of program,rewind