adds support for all different cursor behaviours set via VDU 23,16,x,y
needs to be fully tested to compare to how RISC OS behaves
also includes preliminary support for VDU 23,0,10,n and VDU 23,0,11,n to set cursor display start/end row plus VDU 23,0,&8A,n and VDU 23,0,&8B,n to adjust cursor display start/end column (the latter wasn't part of what a Beeb could do). this also includes the ability to set the flashing speed to fast (as opposed to the default slower flashing rate) and pick a "steady" (non-flashing) cursor. VDU 23,1,n now supports options 2 and 3 for "steady" and "flashing" options instead of the previous off/on
builds on #178
adds support for all different cursor behaviours set via VDU 23,16,x,y
needs to be fully tested to compare to how RISC OS behaves
also includes preliminary support for
VDU 23,0,10,nandVDU 23,0,11,nto set cursor display start/end row plusVDU 23,0,&8A,nandVDU 23,0,&8B,nto adjust cursor display start/end column (the latter wasn't part of what a Beeb could do). this also includes the ability to set the flashing speed to fast (as opposed to the default slower flashing rate) and pick a "steady" (non-flashing) cursor.VDU 23,1,nnow supports options 2 and 3 for "steady" and "flashing" options instead of the previous off/on