SECTION 6
Conversions and Interfaces
6-84 PEN*KEY
R
6100 Computer Programmer’s Reference Guide
INT 15h, Function AX = 8300h: Set Event Wait Interval
BIOS
Programs the realĆtime clock to generate an interrupt after the specified amount
of time and bit 7 of the byte pointed at by ES:BX is set. The duration of the wait
interval is a multiple of 976 microseconds.
On Entry:
AH = 83h
AL = 00h
CX = High byte of interval in microseconds
DX = Low byte of interval in microseconds
ES:BX = Pointer to byte in calling program's memory that has bit 7 set
when the interval expires
On Return:
Carry = 0 if successful:
AH = 0
1 if unsuccessful:
AH = Status
INT 15h, Function AX = 8301h: Cancel Event Wait Interval
BIOS
On Entry:
AH = 83h
AL = 01h
On Return:
None
INT 15h, Function AH = 85h: System Request Key
BIOS
Called by INT 09h ISR when the SYS REQ key is pressed. The default BIOS reĆ
turns AH = 0 and carry clear.
On Entry:
AH = 85h
AL = 00 = Key make
01 = Key break
On Return:
Carry = 0 if successful:
AH = 0
1 if unsuccessful:
AH = Status
INT 15h, Function AH = 86h: Wait
BIOS
Suspends the calling program for the specified time period. The values in CX
and DX are in microseconds but are rounded down to the nearest multiple of 976
microseconds.
On Entry:
AH = 86h
CX = High byte of interval in microseconds
DX = Low byte of interval in microseconds
On Return:
Carry = 0 if successful
1 if unsuccessful
6. Conversions and
Interfaces
Summary of Contents for PEN*KEY 6100
Page 1: ...PEN KEYR 6100 Computer PROGRAMMER S REFERENCE GUIDE P N 977 054 001 Revision B December 2000 ...
Page 14: ...CONTENTS xii PEN KEYR 6100 Computer Programmer s Reference Guide ...
Page 22: ...Preface 8 PEN KEYR 6100 Computer Programmer s Reference Guide PREFACE ...
Page 318: ...GENERAL INDEX Index 6 PEN KEYR 6100 Computer Programmer s Reference Guide ...
