User`s guide

T-MOPSlcdSA User's Guide
Appendix F: Limitations and Hints 75
75
23.5Keyboard Controller
A Problem occurs when the SHIFT, NUMLOCK, ROLL or CAPSLOCK is pressed, which will update the
keyboard LED's via command EDh. The STPC does not acknowledge this and sends a beep on the
speaker.
Only the standard US 101key keyboard is supported.
When there is no PS/2 keyboard connected, several beeps ring out when booting DOS.
If you are using an USB keyboard in the system and you want to get into the BIOS Setup or get the
boot menu loaded, press <DEL> or <F11> once and keep it pressed until you are in the Setup /
boot menu. Don't press any other keys or the mentioned keys more often during POST.