vga_ts_read
vga_ts_write(vh, mode, vga_ts_read(vh, mode) | VGA_TS_MODE_BLANK);
vga_ts_write(vh, mode, vga_ts_read(vh, mode) & ~VGA_TS_MODE_BLANK);
return (vga_ts_read(&vc->hdl, mode) & VGA_TS_MODE_BLANK) == 0;
val = vga_ts_read(&vc->hdl, mode);
val = vga_ts_read(&vc->hdl, mode);
vga_ts_write(vh, mode, vga_ts_read(vh, mode) | VGA_TS_MODE_BLANK);
vga_ts_write(vh, mode, vga_ts_read(vh, mode) & ~VGA_TS_MODE_BLANK);
return (vga_ts_read(&vc->hdl, mode) & VGA_TS_MODE_BLANK) == 0;
val = vga_ts_read(&vc->hdl, mode);
val = vga_ts_read(&vc->hdl, mode);