VGA_CRTC_CURSOR_HI
vga_wcrt(cinfo->regbase, VGA_CRTC_CURSOR_HI, 0x00);
vga_wcrt(regbase, VGA_CRTC_CURSOR_HI, 0x00);
par->crtc[VGA_CRTC_CURSOR_HI] = 0x00;