version 9.0

Major new release with some breaking changes over version 8, see below.

Some guidance on how to upgrade your programs from version 8 is here https://prog8.readthedocs.io/en/latest/upgrading8.html

• the -target option is now required, c64 is no longer a default.
• added ‘cbm’ block in the syslib module that now contains all CBM compatible kernal routines and variables
• added min(), max() builtin functions. For floats, use floats.minf() and floats.maxf().
• added clamp(value, minimum, maximum) to restrict a value x to a minimum and maximum value. For floats, use floats.clampf(f, minv, maxv).
• rename sqrt16() to just sqrt(), make it accept multiple numeric types including float. Removed floats.sqrt().
• abs() now supports multiple datatypes including float. Removed floats.fabs().
• divmod() now supports multiple datatypes. divmodw() has been removed.
• cx16diskio module merged into diskio (which got specialized for commander x16 target). load() and load_raw() with extra ram bank parameter are gone.
• drivenumber parameter removed from all routines in diskio module. The drive to work on is now simply stored as a diskio.drivenumber variable, which defaults to 8.
• for loops now skip the whole loop if from value already outside the loop range (this is what all other programming languages also do)
• asmsub params or return values passed in cpu flags (like carry) now must be declared as booleans (previously ubyte was still accepted).
• (on cx16) added diskio.save_raw() to save without the 2 byte prg header
• added sys.irqsafe_xxx irqd routines
• added gfx2.fill() flood fill routine
• added @split storage class for (u)word arrays to store them as split lsb/msb arrays which is more efficient (but doesn’t yet support all array operations)
• added -splitarrays command line option and ‘%option splitarrays’ to treat all word arrays as tagged with @split