VGA_GFX_DATA_ROTATE
vga_wgfx(cinfo->regbase, VGA_GFX_DATA_ROTATE, 0x00);
vga_wgfx(regbase, VGA_GFX_DATA_ROTATE, 0x00);
par->gdc[VGA_GFX_DATA_ROTATE] = 0x00;
oldop = vga_io_rgfx(VGA_GFX_DATA_ROTATE);
gdc[VGA_GFX_DATA_ROTATE] = 0x00;
gr3 = vga_rgfx(state->vgabase, VGA_GFX_DATA_ROTATE);
vga_wgfx(state->vgabase, VGA_GFX_DATA_ROTATE, 0x0);
vga_wgfx(state->vgabase, VGA_GFX_DATA_ROTATE, gr3);