User`s manual

DIGITAL-LOGIC AG MSLB-P5 Manual V0.3
PRELIMINARY 160
Type Cylinders Heads Sectors Wrt Pre Landing
29 1218 15 36 -1 1218
30 1224 15 17 -1 1224
31 823 10 17 512 823
32 809 6 17 128 809
33 830 7 17 -1 830
34 830 10 17 -1 830
35 1024 5 17 -1 1024
36 1024 8 17 -1 1024
37 615 8 17 128 615
38 1024 8 26 -1 1024
39 925 9 17 -1 925
40 User def.
41 User def.
42 User def.
43 User def.
16.4 PhoenixBIOS Function Keys
The following are the special PhoenixBIOS function keys:
<F2> Enter SETUP program during POST
Ctrl-Alt-<-> Switch to slow CPU speed
Ctrl-Alt-<+> Switch to fast CPU speed
The speed switching keys are only operational when speed switching is available.Fehler! Ver-
weisquelle konnte nicht gefunden werden.
16.5 POST Errors and Beep Codes
16.5.1 Recoverable POST Errors
Whenever a recoverable error occurs during POST, PhoenixBIOS displays an error message de-
scribing the problem.
PhoenixBIOS also issues a beep code (one long tone followed by two short tones) during POST if the
video configuration fails (no card installed or faulty) or if an external ROM module does not properly
checksum to zero.
An external ROM module (e.g. VGA) can also issue audible errors, usually consisting of one long tone
followed by a series of short tones.
16.5.2 Terminal POST Errors
There are several POST routines that issue a POST Terminal Error and shut down the system if they
fail. Before shutting down the system, the terminal-error handler issues a beep code signifying the test
point error, writes the error to port 80h, attempts to initialize the video, and writes the error in the upper
left corner of the screen (using both mono and color adapters).
The routine derives the beep code from the test point error as follows:
1. The 8-bit error code is broken down to four 2-bit groups (Discard the most significant
group if it is 00).
2. Each group is made one-based (1 through 4) by adding 1.
3. Short beeps are generated for the numb er in each group.
Example:
Testpoint 01Ah = 00 01 10 10 = 1-2-3-3 beeps