
_di	= $20F0	; destination address
_si	= $20F2	; source address

_vreg	= $20F6	; the current selected VDC register
_creg	= $20F7	; a copy of the VDC control register

_ax	= $20F8
_al	= $20F8
_ah	= $20F9
_bx	= $20FA
_bl	= $20FA
_bh	= $20FB
_cx	= $20FC
_cl	= $20FC
_ch	= $20FD
_dx	= $20FE
_dl	= $20FE
_dh	= $20FF

