video_row: dc.b 0 ; $01 if in row mode - x
; $00 if in column mode - y
video_increment: dc.b 0 ; $02 if in increment mode
; $00 if in decrement mode
video_enabled: dc.b 0 ; $20 if screen is blanked
video_6bit: dc.b 0 ; $40 if in 8 bit mode, $00 if in 6
; bit mode
video_busy: dc.b 0 ; always 0
video_cur_row: dc.b 0
video_cur_col: dc.b 0
EVEN
video_read:
rts
video_write:
rts