Time Of Day (B15Tod) - IBM PC CONVERTIBLE Technical Reference

Time of Day (B15TOD)
0000
ROMCODE SEGMENT BYTE PUBLIC
ASSUME CS:ROMCODE,DS:DATA
IDENT BI5TOD,15,00
; *********************************************************************
MODULE-NAME : B15TOD
DATE LAST MODIFIED: 9/12/85
DESCRIPTIVE-NAME: TIME OF DAY SUPPORT
COPYRIGHT: 7396-917 (C) COPYRIGHT IBM CORP. 1985
REFER TO COPYRIGHT INSTRUCTIONS FORM NUMBER G120-2083
CHANGE LEVEL: 0.0
FUNCTION: TOD_PROC
SELTOD
ALLOW READ/SET OF REAL TIME CLOCK
INITIALIZE TIMER DATA AREA
TMRO_INT8
INITIALIZLSTATUS
RTCLTST
SYSTEM TIMER INTERRUPT HANDLER
INITIALIZE REAL TIME CLOCK
TEST REAL TIME CLOCK FOR TIME UPDATE
MODULE SIZE: 936 BYTES
ENTRY CONDITIONS:
REFER TO ROUTINE PROLOGUES
EXIT CONDITIONS:
REFER TO ROUTINE PROLOGUES
ROUTINES IN MODULE:
TOD_PROC
SELTOD
TMRO_INT8
ALLOW READ/SET OF REAL TIME CLOCK
INITIALIZE TIMER DATA AREA
TIMER 0 INTERRUPT HANDLER
INTERNAL DATA AREAS TABLES: NONE
EXTERNALL Y REFERENCED ROUTINES: REFER TO EXTRN LIST
EXTERNALL Y REFERENCED DATA AREAS: TIMER DATA AREA
CHANGE ACT I V ITY: NONE
; *********************************************************************
*****************************************************************
EXTERNAL REFERENCES
*****************************************************************
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
EXTRN
GELRTCNMI: NEAR
PULRTCNMI : NEAR
DDS:NEAR
ENABLE_NMI :NEAR
DISABLLNMI: NEAR
KB_NOISE:NEAR
ROM BIOS 2-153