IBM PC CONVERTIBLE

System Setup (SYS_SETUP)
098A
SUBTTL SYS_SETUP
*********************************************************************
ROUTINE-NAME: SYS_SETUP
FUNCTION: THIS ROUTINE INITIALIZES INTRPT VECTORS AND SETS UP DATA
AREAS FOR DEVICES PRIOR TO BOOTING FROM DISKETTE.
ENTRY CONDITIONS:
PURPOSE OF ENTRY: PERFORM SYSTEM SETUP PRIOR TO BOOT
INPUT CONDITIONS: NONE
RESTRICTIONS: NONE
EX IT CONDIT IONS:
NORMAL EXIT CONDITIONS: RETURN
ERROR EXIT CONDITIONS: NONE
REGISTERS MODIFIED: AX,BX,CX,DX
*********************************************************************
ASSUME DS:DATA,ES:ABSO
PROC NEAR
CLEAR THE RESET FLAG I F NOT LOOP MODE
098A 81 3E 0072 R ABCD
CMP
JE
MOV
RESELFLAG, LOOP_MODE
SYS_SETO
RESELFLAG,O
0990
74 06
0992 C7 06 0072 R 0000
SET UP THE INTERRUPT VECTORS TO TEMP INTERRUPT
0998 SYS_SETO:
0998 E8 OAOC CALL VECTOR_SETUP SETUP INTERRUPT VECTORS
COMPLETE THE VECTOR SETUP
099B 2B CO
SUB AX,AX
0990 8E CO MOV
ES,AX
099F 26 C7 06 01BO R IF53 R
MOV
WORD PTR[RESUME_PTR] ,OFFSET DUMMLRETURN
09A6 26 8C OE 01B2 R MOV WORD PTR [RESUME_PTR+2] ,CS ; SET SEGMENT
09AB 26 C7 06 0128 R IF53 R
MOV
WORD PTR [RTCA_PTR] ,OFFS ET DUMMLRETURN
09B2 26 8C OE 012A R MOV WORD PTR[RTCA_PTR+2] ,CS ; SET SEGMENT
SET UP KEYBOARD DATA AREA
09B7 E8 0831 R CALL KYBD_RESET ; RESET KEYBOARD
09BA
80 OE 00B4 R 08
OR KB_NMLCNTL, CLI CK_ON ; ACT I VATE KEYBOARD CLI CKER
DISABLE RTC PERIODIC,ALARM AND UPDATE INTERRUPTS AND RESET SET
09BF B4 OB
09Cl E8 07AA
09C4 24 OF
09C6 E8 07C8 R
09C9 E8 07E6 R
MOV
CALL
AND
CALL
CALL
AH, RTCMODE ; GET RTC MODE CONTROL
GELRTCREG
AL, NOT PI E_ENABLE+SELCLOCK+AI E_ENABLE+U IE_ENABLE
PULRTCREG ; UPDATE RTC MODE CONTROL
BALSALSETUP ; SETUP FOR BATTERY SAVINGS
TURN OFF MODEM I F ON BATTERY POWER AND PROFILE SO INDICATES
09CC E4 7F
09CE A8 40
0900 75 13
0902 B4 17
0904 E8 07AA
2-214 ROM BIOS
IN
TEST
JNZ
MOV
CALL
AL, PWR_STAT
AL,EXLPWR
SYS_SET2
AH, RTCSYS_PROFI
GELRTCREG
; CHECK FOR BATTERY OPERATION
GET SYSTEM PROFILE