Apex PDT Technical Reference Manual
7 Apex Programming Resource
COAM30002
Rev. 2.00
8/13/02
7-11
BeepOn
Syntax:
void BeepOn(unsigned int hertz)
Input:
Frequency of the sound in
hertz
.
Returns:
None
Notes:
Turns on the internal speaker at a given frequency (
hertz
).
To turn the speaker off after this function, call the function
BeepOff()
.
BeepOff
Syntax:
void BeepOff(void)
Input:
None
Returns:
None
Notes:
Turns the speaker off after it has been turned on by a call
to
BeepOn()
.
BeepVolume
Syntax:
char BeepVolume(unsigned char level)
Input:
VOL_OFF, VOL_LOW, VOL_MED, VOL_HIGH
corresponding to Off, Low, Medium, and High volume
settings. Symbolic constants are defined in
[a3lib.h]
.
Returns:
Previous setting on success, -1 on error
Notes:
Sets the Apex PDT beeper volume. This function returns
an error if attempted on BIOS's prior to v1.34.
Screen (Display) Functions
GetTextSize
Syntax:
int GetTextSize(void)
Input:
None
Returns:
TEXT_8X16, TEXT_8X8, TEXT_16X8, TEXT_16X16,
on success (symbolic names are defined in
[a3lib.h]
).
−
1 if attempted in non-text mode.
Notes:
Determines the current font size.
Summary of Contents for Apex III
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Page 12: ...Apex PDT Technical Reference Manual Table Of Contents COAM30002 Rev 2 00 8 13 02 viii...
Page 108: ...Apex PDT Technical Reference Manual 6 Utility Programs COAM30002 Rev 2 00 8 13 02 6 36...
Page 152: ...Apex PDT Technical Reference Manual 10 Power Management COAM30002 Rev 2 00 8 13 02 10 8...
Page 166: ...Apex III Technical Reference Manual Appendix A COAM30002 Rev 1 03 08 13 02 A 6...
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