Nonmaskable Interrupt Handler (Blonmih); Nonmaskable Interrupt Handler (B 10Nmih); First Level Interrupt Handler (Nmlflih) - IBM PC CONVERTIBLE Technical Reference

Nonmaskable Interrupt Handler
(BIONMIH)
0000
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PUBLICS
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PUBLIC NMLFLIH
PUBLI C PULRTCNMI
PUBLIC GELRTCNMI
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EXTERNALS
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EXTRN
EXTRN
EXTRN
EXTRN
PAR_CHK: BYTE
ICON_PR:NEAR
ENABLE_NMI : NEAR
DISABLE_NMI :NEAR
ROMCODE SEGMENT BYTE PUBLIC
ASSUME CS: ROMCODE
IDENT BlONMIH,lO,OO
First Level Interrupt Handler
(NMI_FLIH)
; **********************************************************************
MODULE-NAME: NMLFLIH
OATE LAST MODI FI ED : 09/12/85
DESCRIPTIVE-NAME: THIS ROUTINE SUPPORTS THE SIX TYPES OF
NMI
SOURCES
COPYRIGHT: 7396-917 (C) COPYRIGHT IBM CORP. 1985
REFER TO COPYRIGHT INSTRUCTIONS FORM NUMBER G120-2083
CHANGE LEVEL: ECOOO
FUNCTION: THIS MODULE HANDLES NON-MASKIBLE INTERRUPTS. THE
SIX TYPES OF NMI' S ARE:
DISKETTE NMI - I/O INSTR. ISSUED WITH CONTROLLER OFF
I/O CHANNEL CHECK - I/O DEVICE CHANNEL .ERROR
SYSTEM SUSPEND 2 SECONDS BEFORE POWER OFF OCCURS
KYBD_DATA KEYBOARD HAS DATA IN PORT 7DH
KYBD_CLEAR INT 9 HANDLER ISSUED KYBD CLEAR I/O
RTC~LARM REAL TIME CLOCK INTERRUPT
MODULE SIZE: 2618 BYTES
2-26 ROM BIOS