IBM PC CONVERTIBLE Technical Reference page 204

01F5 TLWTl:
01F5 EC IN AL,DX READ FROM I/O PORT
01F6 84 C7 TEST AL,BH
01F8 74 68 JZ WAILDONE
01FA TLWT2:
01FA E8 0277 CALL EVENLWAIT
01FD 72 64 JC
WAIT_EXIT
01FF EB E4 JMP TLWAIT
INVALID EVENT SO SET CARRY AND EXIT
0201 INLEVENT:
0201 F9
STC
SET CARRY FOR INVAL EVNT TVP
0202 EB 5F 90
JMP
WAIT_EXIT
TEST, RETURN I F NOT ZERO
0205
TNLWAIT:
0205 E8 026B R
CALL
PREP _WAIT
PREPARE FOR WAIT
0208 F6 C4 10 TEST
AH,10H TEST FOR I/O PORT READ
020B 75 08
JNZ TNLWTl
020D 26: 84 3D TEST BYTE PTR ES: [DI], BH
0210 75 50 JNZ WAIT_DONE RETURN I F ZERO
0212 EB 06 90 JMP TNLWT2
0215 TNLWTl:
0215 EC IN AL,DX READ FROM I/O PORT
0216 84 C7 TEST AL,BH
0218 75 48 JNZ WAIT_DONE
021A TNLWT2:
021A E8 0277 R CALL EVENLWAIT
0210 72 44
JC WAILEXIT
021F EB E4
JMP TNLWAIT
COMPARE, RETURN I F NOT EQUAL
0221 CNEQ_WAIT :
0221 E8 026B R CALL
PREP_WAIT
PREPARE FOR WAIT
0224 F6 C4 10 TEST AH,10H TEST FOR I/O PORT READ
0227 75 08
JNZ
CNEQ_WTl
0229 26: 38 3D CMP BYTE PTR ES: [Dll ,BH
022C 75 34 JNE WAIT_DONE
RETURN I F ZERO
022E EB 06 90 JMP CNEQ_WT2
0231 CNEQ_WTl :
0231 EC IN AL,DX
READ FROM I/O PORT
0232 3A C7 CMP AL, BH
0234 75 2C JNE WAILDONE
0236 CNEQ_WT2 :
0236 E8 0277 R CALL EVENLWAIT
0239 72 28 JC WAILEXIT
023B EB E4 JMP CNEQ_WAIT
COMPARE, RETURN I F ZERO
023D CEQ_WAIT :
023D E8 026B R CALL PREP_WAIT PREPARE FOR WAIT
0240 F6 C4 10 TEST AH,10H TEST FOR I/O PORT READ
0243
75 08
JNZ CEQ_WTl
0245 26: 38 3D
CMP BYTE PTR ES: [DI],BH
0248 74 18
JE
WAIT_DONE
RETURN I F ZERO
024A EB 06 90
JMP
CEQ_WT2
024D CEQ_WTl :
024D EC IN AL,DX READ FROM I/O PORT
024E 3A C7 CMP AL,BH
0250 74 10 JE WAIT_DONE
0252 CEQ_WT2:
0252 E8 0277 R CALL EVENLWAIT
ROM BIOS 2-179