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IBM P"rson_1 Computer MACRO Assembler
Version 2.00
1-8
TEST I
----
06/10/85
POWER ON SELF TEST
(POST)
06-10-85
SYSDATA. INC -
DESCRIPTOR EQUATES
645
PAGE
640
C
INCLUDE SYSDATA.INC
641
C
1----- -------- - - - --- ----------------------------------------------- - - -----
648
649
C
C
;
PROTECTED MODE EQUATES FOR POST TESTS AND BIOS ROUTINES
;
- - - -
-
- - - - - - - - - - - - - - - -
-
-
-
- - -
---
-------
--
- - - - ---
-----
-
-
-
-
--
650
C
651
C
1----
LENGTH EQUATES FOR PROTECTED MODE TESTS
652
C
653
0300
C
SDA LEN
EOU
00300H
SYSTEM DATA AREA LENGTH
65.
0800
C
SYS-IDT LEN
EOU
256-8
256 SYSTEM lOT ENTRIES,
8 BYTES EACH
655
0088
e
GDT-LEN
EOU
TYPE GOT DEF
GOT STRUCTURE LENGTH
656
0008
e
DESe LEN
EOU
TYPE DATA DESC
LENGTH OF A DESCR IPTOR
651
1000
e
MCRT-S I ZE
EOU
-4-'02-4
-
MONOCHROME CRT SIZE
656
0
4000
e
CCRT-S I ZE
EOU
16-'024
COMPATIBLE COLOR CRT SIZE
659
0
FFFF
e
ECCRT SIZE
EOU
OFFFFH
SIZE OF EACH PORT I ON OF THE ENHANCED
660
0
FFFF
C
MAX SEG LEN
EQU
OFFFFH
MAX I MUM SEGMENT LENGTH :: 64K
661
0
0000
C
NULL SEG_LEN
EOU
OOOOOH
NULL SEGMENT LENGTH =
a
662
C
663
C
LOCATION EQUATES FOR PROTECTED MODE TESTS
66.
e
665
666
DOAO
0400
C
C
SYS
lOT LOC
SDA-LOC
EQU
EOU
ODOAOH
00-400H
I
THE SYSTEM lOT IS AT THE BOTTOM
;
SAME AS REAL
661
=
DBAO
e
GOT-LaC
EOU
(SYS lOT LaC
SYS
lOT LEN)
666
0
0000
C
MCRTCI LO
EOU
OOOOH
-
MONOCHROME CRT ADDRESS
669
0
OOOB
e
MCRT"-HI
EOU
OBH
10BOOOOH)
610
0
8000
C
CCRTCI-LO
EOU
BOOOH
COMPATIBLE COLOR CRT ADDRESS
611
0
0008
e
CCRTCI-H I
EOU
OBH
( OB8000H)
612
0
0000
C
ECCRTi LO LO
EOU
OOOOH
613
614
0
OOOA
0
0000
C
e
ECCRTCI-LO-HI
ECCRT.-HI-LO
EOU
EOU
O'H
OOOOH
(OAOOOOH)
615
616
611
0
OOOB
0000
0
OOOF
C
C
C
ECCRT.-HI-HI
CSEG. CO -
CSEGCI-H I
EOU
EOU
EOU
08H
OOOOH
OFH
(OBOOOOH)
CODE SEGMENT POST/BIOS
10FOOOOHI FOR TESTS
618
=
0000
C
NSEG.-LO
EOU
OOOOH
ABSO
619
0
0000
C
NSEG.:H 1
EOU
OOH
660
C
661
C
;----
DEFINITIONS FOR ACCESS RIGHTS BYTES
662
C
663
00F3
C
EOU
11110011B
PRESENT
664
C
DPL
=
3
665
666
C
C
CODE/DATA SEGMENT
NOT EXECUTABLE
661
C
GROW-UP (OFFSET <= LIMIT)
666
C
WRITABLE
669
C
1 ACCESSED
690
0
0093
C
CPLO OAT A ACCESS
EOU
100100119
IDPL=O
691
0
009B
C
CPLO-CODE- ACCESS
EOU
100 110119
; CPL 0 -
NON-CONFORM I NG
692
00E2
C
LOT i5ESC -
EOU
111000109
693
0
0081
C
FREE TSS
EOU
10000001B
69'
0
0086
C
INT GATE
EOU
100001109
695
0
0081
TRAP_GATE
EOU
100001118
696
691
0
000 I
VIRTUAL_ENABLE
EOU
0000000000000001B
I
PROTECTED MODE ENABLE
696
699
100
THE GLOBAL DESCRIPTOR TABLE DEFINITION FOR POWER ON SELF TESTS
10 I
102
GDT_DEF
STRUC
103
0000
DO
UNUSED ENTRY
104
0008
GOT PTR
DO
THIS ENTRY POINTS TO THIS TABLE
105
0010
SYS-IDT PTR
DO
POST
INTERRUPT DESCRIPTOR TABLE
106
0018
RSoA PTR
DO
THE REAL SYSTEM DATA AREA FOR POST
101
0020
C BWeRT PTR
DO
COMPATI8LE BW CRT FOR POST
106
002B
C-CCRT PTR
DO
COMPA T I BLE COLOR CRT FOR POST
109
110
0030
0038
E-CCRT-PTR
E-CCRT-PTR2
DO
DO
ENHANCED COLOR GRAPH I CS CRT (16 BYTES)
111
0040
SYS ROM CS
DO
CS - POST lOT. ROM RESIDENT
112
004B
ES TEMP
DO
DYNAN' C PO
I
NTER FOR ES
113
0050
CS-TEMP
DO
DYNAMIC POINTER FOR CS
114
005B
SS-TEMP
DO
DYNAM I C PO
I
NTER FOR SS
115
0060
OS-TEMP
DO
DYNAMIC POINTER FOR OS
116
0068
POST TR
DO
TR VALUE FOR THIS MACHINE'S TSS
111
0010
POST-TSS PTR
DO
" 6
0018
POST-LDTR
DO
LDTR VALUE FOR THIS MACHINE'S LOT
119
0080
POST-LOT PTR
DO
120
0088
GDT_DEF -
ENDS
121
122
;----
SEGMENT DESCRIPTOR TA8LE ENTRY STRUCTURE
123
124
DATA DESC
STRUC
125
126
0000
??
0002
?1
SEG LIMIT
OW
BASE La WORD
OW
SEGMENT LIM I T
(I
-
65535 BYTES)
24 BIT SEGMENT PHYS
I
CAL
121
126
0004
0005
9ASE-H I-BYTE
DB
DATA-ACe RIGHTS DB
ADDRESS
10 -
(16M-I))
ACCESS RIGHTS BYTE
129
0006
11
DATA-RESERVED
ow
RESERVED - MUST
BE
0000 FOR THE 80286
130
0008
DATA:DESC
ENDS
131
132
:----
GATE DESCRIPTOR TABLE ENTRY STRUCTURE
133
13.
GATE DESC
STRUC
135
0000
"
ENTRY POINT
ow
DESTINATION ROUTINE ENTRY POINT
136
0002
"
CS SELECTOR
OW
SELECTOR FOR DESTINATION SEGMENT
131
0004
WORD COUNT
DB
NUMBER OF WORDS TO COPY FROM STACK
136
0005
GATE-ACC RIGHTS DB
ACCESS RIGHTS BYTE
139
0006
GATE-RESERVED
OW
RESERVED - MUST BE 0000 FOR THE 80286
140
0008
GATE::::DESC
ENDS
141
142
.LlST
TESTl
5-35
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