vcs_scr_readw
*con_buf++ = (vcs_scr_readw(vc, org++) & 0xff);
*con_buf16++ = vcs_scr_readw(vc, org++);
(vcs_scr_readw(vc, org) & 0xff00) | c, org);
vcs_scr_writew(vc, vc_compile_le16(c, vcs_scr_readw(vc, org)),
vcs_scr_writew(vc, vc_compile_le16(vcs_scr_readw(vc, org) >> 8, c),
u16 vcs_scr_readw(const struct vc_data *vc, const u16 *org);