Aaeon PCM-4330 Instructions Manual page 102

AX = 1C01h save video state
CX=
ES:BX =
AL =
AX = 1C02 h restore video state
CX=
ES:BX=
AL=
which video state
buffer to save video state in
1Ch (since function is supported)
which video state
buffer from which to restore video state
1Ch (since function is supported)