IBM AT 5170 Technical Reference page 247

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IBM Personal Computer MACRO Assembler Version 2.00 I-I
TEST3 ---- 06/10{85 POST EXCEPTION INTERRUPT TESTS 06-10-85
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18,121
TITLE TEST3 ---- 06/10/85 POST EXCEPTION INTERRUPT TESTS
.286C
.L 1ST
TEST .20
ADD I T 10NAL PROTECTED I VIRTUAL MODE) TES T
DESCRIPTION
THE PROCESSOR I S PUT I N PROTECTED MODE AND
THE FOLLOWING FUNCTIONS ARE VERIFIED
1. 'o'ER I FY PROTECTED MODE
THE MACHINE STATUS IS CHECK FOR VIRTUAL MODE
2.
PROGRAMMED I NTERRUPT TEST
AN PROGRAMMED INTERRUPT 32 IS] SSUED AND
AND VERIFIED
3. EXCEPTION INTERRUPT 13 TEST
A OESCR
I
PTOR SEGMENT LIM I TIS SET TO ZERO
AND A WRITE TO THAT SEGMENT IS ATTEMPTED
AN EXCEPT
I
ON 13 IS EXPECTED AND 'o'ER I F
I
ED
4. LDT/SDT LTRISTR TEST
LOAD LOT REG I STER AND 'o'ER I FY CORRECT
LOAD TASK REGISTER AND VERIFY CORRECT
THEY ARE VERIFIED VIA THE STORE INSTRUCTION
5. THE CONTROL FLAGS OF THE 286 FOR DIRECTION
ARE VERIFIED VIA THE STD AND CLD COMMANDS
IN PROTECTEO MODE
BOUND INSTRUCTION TEST IEXCEPTION INT 51
CREATE A SIGNEO ARRAY INDEX WITHIN AND
OUTSIDE THE LIMITS. CHECK THAT NO EXC INT
IF WITHIN LIMIT AND THAT AN EXC )NT 5
OCCURS IF OUTSIDE THE LIMITS.
PUSH ALL POP ALL TEST
SET GENERAL PURPOSE REG I STERS TO 0 I FFERENT
VALUES ISSUE A PUSH ALL. CLEAR THE REGISTERS
ISSUE A POP ALL AND VERIFY CORRECT.
8.
CHECK THE VERR
I
VERW I NSTRUCTI ONS
THE ACCESS BYTE I S SET TO READ ONLY THEN TO
A WR I TE ONLY AND THE VERR
I
VERW INSTRUCT (ONS
ARE VERIFIED.
9.
CAUSE AN INTERRUPT 13 V (A A WR
I
TE TO A
READ ONL Y SEGMENT
10. \lER
I
FY THE ARPL
I
NSTRUCT ION FUNCT IONS
SET THE RPL F I ELO OF' A SELECTOR AND
'o'ER I FY THAT CURRENT SELECTOR RPL (S SET
CORRECTLY.
! I. VERIFY THE LAR INSTRUCTION FUNCTIONS
12. VERIFY THE LSL INSTRUCTION FUNCTIONS
13. LOw MEG CHIP SELEcT TEST
CODE SEGMENT BYTE PUBLIC
PUBL I C POST3
EXTRN CMOS WR I TE: NEAR
EXTRN
DDS:NEAR
EXTRN
PROC SHUTOOWNINEAR
EXTRN SYSINITI :NEAR
ASSUME CS:COOE
POST3 PROC
CALL DDS SET DATA SEGMENT
MO\l AL,OFOH
<> <><><><><><><><><> <> <>
OUT MFG PORT, AL <><> CHECKPOINT FO <><>
SET SHUTDOWN RETURN 7
MOV AX,1·H+CMOS SHUT OOWN+NMI I AOORESS FOR SHUTDOWN BYTE
CALL CMOS WRITE - - SET ERROR EXIT (DOUBLE EXCEPTION?i
; --- ENABLE PROTECTED MODE
MOV SP,POST SS SET STACK FOR SYSINITI
MOV
SS,SP
MOV SP,POST SP
CALL SYSINITl GO ENABLE PROTECTED MODE
1-----
SET TEMPORARY STACK
MO\l AX ,COT PTR
MOV ES,AX ­
MOV DS,AX
005A 0000
MDV ES:SS TEMP.BASE LO WORD,O
005C 00 MOV BYTE PTR ES: ISS-TEMP.BASE HI BYTE),O
MOV 5 I ,SS TEMP - - ­
MO\l SS,S] ­
MOV SP,MAX_SEG_LEN-2
VER I FY PROTECTED MODE
SMSW
AX
GET THE MACHINE STATUS WORD
08 OOF'H,OOIH,OEOH
TEST AX, V I RTUAL ENA8LE
ARE WE IN PROTECTED MODE
JNZ
T1 I ­
JMP ERROR_EX
I T
ERROR IF NOT
AL,OF!H <><> <> <><><><><><><><><>
MFG PORT,AL <><> CHECKPOINT Fl <><>
INTERRUPT TEST (PROGRAMMED INTERRUPT 32)
MOV
AL,OBOH SET EXCEPT I ON FLAG
OUT
OMA_PAGE+OAH,AL FOR INTERRUPT
10
INT 32 INTERRUPT
SUB CX,CX WAIT FOR INTERRUPT
LOOP! :
IN AL,OMA_PAGE+OAH
AND AL,AL
010 1HE
INTERRUPT OCCUR?
LOOPNZ LOOPI
JZ T1 2
JMP ERROR_EX I T MISSING INTERRUPT
CAUSE AN EXCEPT I ON
INTERRUPT
(GENERAL PROTECT I ON INTERRUPT (30)
AL,OF2H
TEST3
5-75