CG2_N_PLANE
union bitplane ropplane[CG2_N_PLANE];
u_short word[CG2_HEIGHT][CG2_WIDTH/(CG2_N_PLANE * sizeof(u_short))];
u_short plane[CG2_FBSIZE/(CG2_N_PLANE * sizeof(u_short))];
union bitplane memplane[CG2_N_PLANE]; /* bit plane map */
union bitplane ropplane[CG2_N_PLANE];
u_short word[CG2_HEIGHT][CG2_WIDTH/(CG2_N_PLANE * sizeof(u_short))];
u_short plane[CG2_FBSIZE/(CG2_N_PLANE * sizeof(u_short))];
union bitplane memplane[CG2_N_PLANE]; /* bit plane map */