MSA
cmd_string[i++] = MSA(board->sad);
cmd_string[i++] = MSA(sad);
writes[i].value = enable ? MSA(address) : 0x0;
cmd_byte == MSA(board->sad)) {
cmd_byte == MSA(board->sad)) {
if ((read_byte(priv, CPTR) & gpib_command_mask) == MSA(board->sad))