VGA_CRTC_CLAH
vga_set_crtc(VGA_REG_ADDR, VGA_CRTC_CLAH, addr >> 8);
addr = (vga_get_crtc(VGA_REG_ADDR, VGA_CRTC_CLAH) << 8) +
vga_set_crtc(VGA_CRTC_CLAH, off >> 8);
off = (vga_get_crtc(VGA_CRTC_CLAH) << 8) + vga_get_crtc(VGA_CRTC_CLAL);
vga_set_crtc(&console->vga.regs, VGA_CRTC_CLAH, addr >> 8);
addr = (vga_get_crtc(&console->vga.regs, VGA_CRTC_CLAH) << 8) +