VDP routine HMMM is not correct

Missing some data and when added data, does not work in some cases.

Invalid is : SUB A
should be SUB A,x  (D / E)

when copying  0,0 - 240,10  to 10,0...  fails (in OpenMSX, not checked yet on real MSX)
you need to reverse  240,0 - 0,10 to 10,0 works (very slow, if DIX and DIY is set correctly)

Also size of NX and NY result is incorrect.

Routine should be rewritten. (by ASCII)