_ _  |  |  _ _

         Index

80186 microprocessor, 419
80286 microprocessor, 419
8086 microprocessor, 419
8086 object language, 419
8086 object module format. See Object Module Formats (OMF)
Absolute Disk Read (Interrupt 25H), 46
Absolute Disk Write (Interrupt 26H), 49
Absolute segment, LSEG, 437, 439
ACBP byte, SEG ATTR, 437
Address mode, 427
Alignment attribute, 437
Alignment subfield, SEG ATTR, 437
Allocate Memory (Function 48H), 229
Application
        Frame Number, protected-mode, 431
Archive bit, 389
Array, character, 444
ASCII character set, 434
ASCIZ string, 239, 249
Assign list, 14
Attribute byte, 13
Attribute field, 331
Attribute, LSEG
        Alignment, 437
        Combination, 438
        SEG ATTR field, SEGDEF, 437
Attribute
        primary, 456
        secondary, 456
        Target, 456
AUTOEXEC file, 386
Auxiliary Input (Function 03H), 60
Auxiliary Output (Function 04H), 62
base, definition, 426
Big subfield, SEG ATTR, 439
BIN format file, 326
Binary line number, 450
BIOS Parameter ^Block (<BPB), 339
BIOS Parameter Block (BPB), 342, 351
Bit 8, 336
Bit 9, 337
Bitfield, 435
Block Count subfield, Iterated Data Block, 452
Block devices
        device drivers, 346
        disk drives, 327
        example, 355
        installation, 339
Boot sector, 351
BPB pointer, 339
Buffered Keyboard Input (Function 0AH), 74
BUILD BPB, 332
Build BPB, 342, 343
Busy bit, 337, 346, 348
Byte, representation, 435
C language, 444
CALL instruction, 427
Cancel Assign-List Entry (Function 5FH, Code 04H), 294
Canonic Frame, 429
Canonic Frame, definition, 422
Carry flag, 22
Case-Mapping, 160
Change, 168
Change Directory Entry (Function 56H), 256
Character array, 444
Character device driver, example, 371
Character devices, 327
Character set
        definition, 405
Check Keyboard Status (Function 0BH), 76
CHKSUM field, SAMREC, 434
Class Name, definition, 422
CLOCK device, 332, 353
Close, 178
Close File (Function 10H), 87
Cluster, 387
Code page
        definition, 405
Code segment, CS, 424
Combination attribute, 438
Combination subfield, SEG ATTR, 438
COMDEF record, 424
        field
        CHKSUM, 443
        Communal Length, repeated, 445
        Communal Name, repeated, 444
        Data Segment Type, repeated, 445
        Record Length, 443
        RECTYP, 443
        Type Index, repeated, 444
        length fields, format, 445
        order with respect to COMENT, 444
        purpose, 443
        schematic, 443
COMENT record
        field
        CHKSUM, 458
        Comment, 459
        Comment Type, 458
        Record Length, 458
        RECTYP, 458
        order with respect to COMDEF, 444
        order with respect to LOCSYM, 447
        purpose, 458
        schematic, 458
        subfield of Comment Type
        Comment Class, 459
Command code field, 335
Command processor, 386
Command.com, 386
Commands, utility, NLS, 15, 405
Comment class subfield, Comment Type, 459
Comment field, COMENT, 459
Comment record, 432
Comment Record (COMENT), 458
Comment Type field, COMENT
        bit settings, 459
        definition, 458
        format, 459
Commit File (Function 68H), 304
Common blocks, FORTRAN, 444
Communal Length field, COMDEF, 445
Communal Name field, COMDEF, 444
Communal Name, ordering with External Name, 444
Communal Names Definition Record (COMDEF), 443
Communal names definition record. See COMDEF record
Communal variable, 460
        FAR, 445, 446
        HUGE, 447
        NEAR, 445, 446
        similarity to FORTRAN common block, 444
        uninitialized public variable, 444
Compatibility, ensuring, 465
Complete Name, definition, 423
Computer language
        C, 444
        FORTRAN, 444
COMSPEC, 400
Con device, 328
Content subfield, Iterated Data Block, 452
Control blocks, 397
Control information, 413
CONTROL-C, 152
CONTROL-C Address (Interrupt 23H), 386
CONTROL-C Handler Address (Interrupt 23H), 40
Country code, current, 405
Country code
        definition, 405
Country-dependent information, NLS, 15, 405
Country-dependent information
        case conversion tables, 15, 405
        collating sequence, character sorting, 15, 405
        currency, 15, 405
        date, 15, 405
        DBCS environmental vector, 15, 405
        keyboard support, 15, 405
        time, 15, 405
        valid single-byte characters, 15, 405
Country.sys file, 406
Create, 125, 164, 170
Create File (Function 16H), 100
Create New File (Function 5BH), 273
Create Temporary File (Function 5AH), 269
Critical Error Handler Address (Interrupt 24H), 41, 386
CS register, 424
DAT field, LEDATA, 451
Data Record, 453
Data Segment Type field, COMDEF, 445
Data segment
        DS, 424
        ES, 424
        FAR, 445
        NEAR, 445
Delete Directory Entry (Function 41H), 184
Delete File (Function 13H), 94
Descriptor, Group Component, GRPDEF, 441
Device control, 11
Device drivers
        block, 327
        creating, 328, 390
        example, 355, 371
        installable, 325
        installing, 329
        non-resident, 325
        preserving registers, 355
        resident, 325
Device Handles, 9
Device header, 330
Device interrupt routine, 329
Device management, programming hints, 467
Device strategy routine, 329
Device-related function requests, 11
Direct Console Input (Function 07H), 68
Direct Console I/O (Function 06H), 66
Directory Entry, 12
Directory-Related Function Requests, 12
Directory-related function requests, 12
Disk allocation, 387
Disk Directory, 387
Disk formats
        IBM, 392
        standard MS-DOS, 392
Disk Transfer Address (DTA), 98, 250, 400
Dispatch table, 354
Display Character (Function 02H), 58
Display String (Function 09H), 72
Done bit, 336, 355
DS register, 424
Duplicate File Handle (Function 45H), 221
Eight Leaf Descriptor field, TYPDEF
        format, 461
        subfield
        EN, 461
        Leaf Descriptor, 461
Element Type Index subfield, Leaf Descriptor, 461
EN subfield, Eight Leaf Descriptor, 461
End address, 339
End Process (Function 4CH), 245, 399
Enumerated Data Offset field, LEDATA, 450
Error bit, 355
Error codes, 22
Error Handling, 27
Error handling, 386
ES register, 424
EXE device drivers, 326
.exe files, 413
exe files, 413
EXE format file, 326
EXE loader, 326
EXTDEF record, 424, 432
        field
        CHKSUM, 448
        External Name, repeated, 448
        Record Length, 448
        RECTYP, 448
        Type Index, repeated, 449
        purpose, 448
        schematic, 448
Extended error codes, 24
Extended FCB, 20
Extensions class, Microsoft, 447, 449
External Index, 428, 429, 430
External indices, 448
External Name field, EXTDEF, 448
External Name
        mapping, 448
        referenced in FIXUPP record, 448
External Names Definition Record (EXTDEF), 448
External names definition record. See EXTDEF record
FAR data segment, 445
FAR subfield, Leaf Descriptor, 461
FAR variable format, Leaf Descriptor, 461
FAT, 343, 390
FAT ID byte, 108, 111
FAT <ID byte, 351
FBVAL, definition, 431
FCB, 18
config.sys, 329
config.sys file, 325
io.sys file, 389
File Allocation Table, 390
File and directory management, programming hints, 469
File attributes, 13
File Control Block
        definition, 18
        extended, 20
        fields, 19
        format, 18
        opened, 18
        unopened, 18
File locking, programming hints, 470
Filename, 134
File-related function requests, 10
File-sharing function requests, 11
msdos.sys file, 386, 389
Find First File (Function 4EH), 249
Find Next File (Function 4FH), 252
FIX DAT subfield, Fixup
        internal structure, 455
        schematic, 455
Fixup field, FIXUPP
        data type
        Frame, 453
        Location, 453
        Mode, 453
        Target, 453
        definition, 453
        schematic, 454
        subfield
        LOCAT, 454
Fixup mode
        segment-relative, 454
        self-relative, 454
FIXUP record, 427
Fixup
        definition, 425
        Frame, 426
        Location, 426
FIXUPP record, 432
FIXUPP Record (FIXUPP), 452
FIXUPP record
        External Name referenced in, 448
        field
        CHKSUM, 453
        Fixup, repeated, 453
        Frame Datum, conditional, 448
        Record Length, 453
        RECTYP, 453
        Target Datum, conditional, 448
        Thread, repeated, 453
        purpose, 453
        schematic, 452
        subfield of FIX DAT, Fixup
        F, 455
        Frame, 456
        P, 456
        T, 456
        TARGT, 456
        subfield of Fixup
        Frame Datum, conditional, 456
        Target Datum, conditional, 456
        Target Displacement, conditional, 456
        subfield of LOCAT, Fixup
        Data Record Offset, 455
        LOC, 455
        M (mode), 454
        subfield of Thread
        Index, conditional, 454
        TRD DAT, 453
        subfield of TRD DAT, Thread
        D, 453
        Method, 453
        THRED, 454
Fixup
        segment-relative, 427, 431
        self-relative, 427, 430
        Target, 426
Flush, 349
Flush Buffer, Read Keyboard (Function 0CH), 78
Force Duplicate File Handle (Function 46H), 224
Format, 387
FORTRAN, common blocks, 444
FORTRAN language, 444
FOVAL, definition, 431
Frame Datum field, FIXUPP, 448
Frame Datum subfield, Fixup
        External Index, 456
        Group Index, 456
        Segment Index, 456
Frame Datum subfield, START ADDRS, 458
Frame Number, 431
Frame Number, conditional, 439
Frame Number, definition, 421
Frame Number subfield, Public Base, 442
Frame Number subfield, SEG ATTR, 439
Frame
        definition, 421
        Frame Number, 431
        nomenclature, 430
        specifying, 429
        specifying, FIXUPP, 454
Frames
        Thread Number, FIXUPP, 454
Free Allocated Memory (Function 49H), 232
Function, 114, 116, 119, 121, 123, 125, 127, 130, 133, 136, 138, 140, 142, 144, 146, 148, 150, 152, 154, 156, 158, 162, 164,
        166, 168, 170, 172, 178, 180
Function Requests
        alphabetic order, 31
        calling, 21
Function requests
        definition, 3
Function Requests
        definition, 21
        device-related, 11
        Directory-related, 12
        directory-related, 12
        file-related, 10
        file-sharing, 11
        Function 00H, 54
        Function 01H, 56
        Function 02H, 58
        Function 03H, 60
        Function 04H, 62
        Function 05H, 64
        Function 06H, 66
        Function 07H, 68
        Function 08H, 70
        Function 09H, 72
        Function 0AH, 74
        Function 0BH, 76
        Function 0CH, 78
        Function 0DH, 80, 98
        Function 0EH, 82
        Function 0FH, 84
        Function 10H, 87
        Function 11H, 89
        Function 12H, 92
        Function 13H, 94
        Function 14H, 96
        Function 15H, 98
        Function 16H, 100
        Function 17H, 102
        Function 19H, 104
        Function 1AH, 106
        Function 1BH, 108
        Function 1CH, 111
Function requests
        Function 25H, 39, 40
Function Requests
        Function 25H, 41
Function requests
        Function 35H, 39, 40
Function Requests
        Function 40H, 182
        Function 41H, 184
        Function 42H, 186
        Function 43H, 189
        Function 44H, Code 08H, 201
        Function 44H, Code 09H, 203
        Function 44H, Code 0AH, 205
        Function 44H, Code 0BH, 207
        Function 44H, Code 0CH, 209
        Function 44H, Code 0DH, 212
        Function 44H, Codes 00H and 01H, 192
        Function 44H, Codes 02H and 03H, 195
        Function 44H, Codes 04H and 05H, 197
        Function 44H, Codes 06H and 07H, 199
        Function 44H, Codes 0EH and 0FH, 220
        Function 45H, 221
Function requests
        Function 46H, 224
Function Requests
        Function 47H, 227
        Function 48H, 229
        Function 49H, 232
        Function 4AH, 235
        Function 4BH, Code 00H, 238
        Function 4BH, Code 03H, 242
        Function 4CH, 245
        Function 4DH, 247
        Function 4EH, 249
        Function 4FH, 252
        Function 54H, 254
        Function 56H, 256
        Function 57H, 259
        Function 58H, 262
        Function 59H, 265
        Function 5AH, 269
        Function 5BH, 273
        Function 5CH, Code 00H, 275
        Function 5CH, Code 01H, 280
        Function 5EH, Code 00H, 283
        Function 5EH, Code 02H, 285
        Function 5FH, Code 02H, 287
        Function 5FH, Code 03H, 290
        Function 5FH, Code 04H, 294
        Function 62H, 296
        Function 65H, 298
        Function 66H, 301
        Function 67H, 303
        Function 68H, 304
        Handling errors, 22
        memory management, 5
        National Language Support, 15
        Network-related, 14
        network-related, 14
        numeric order, 28
        process management, 7
        standard character I/O, 4
        system-management, 15, 16
Generic IOCtl for devices (Function 44H, Code 0DH), 212
Generic IOCtl for handles (Function 44H, Code 0CH), 209
Generic IOCtl Function, 349
Get, 119, 136, 140, 146, 148, 154, 156, 158
Get Assign List Entry (Function 5FH, Code 02H), 287
Get Current Directory (Function 47H), 227
Get Current Disk (Function 19H), 104
Get Default Drive Data (Function 1BH), 108
Get Drive Data (Function 1CH), 111
Get Extended Country Information (Function 65H), 298
Get Extended Error (Function 59H), 265
Get Interrupt Vector (Function 35H), 39, 40
Get Machine Name (Function 5EH, Code 00H), 283
Get PSP (Function 62H), 296
Get Return Code Child Process (Function 4DH), 247
Get Verify State (Function 54H), 254
Get/Set Allocation Strategy (Function 58H), 262
Get/Set Date/Time of File (Function 57H), 259
Get/Set File Attributes (Function 43H), 189
Get/Set Global Code Page (Function 66H), 301
Get/Set IOCtl Drive Map (Function 44H, Codes 0EH and 0FH), 220
Get/Set Logical Drive Map Function, 350
Group Component Descriptor field, GRPDEF, 441
Group, definition, 421
Group definition record. See GRPDEF record
Group Definition Record (GRPDEF), 440
Group Index, 428, 429, 430
Group Index subfield, Line Number Base, 449
Group Index subfield, Public Base, 442
Group Name Index field, GRPDEF, 440
GRPDEF record, 432
        definition, 424
        field
        CHKSUM, 440
        Group Component Descriptor, repeated, 440
        Group Name Index, 440
        Record Length, 440
        RECTYP, 440
        schematic, 440
Handles
        definition, 9
        device, 9
Handling errors, 22
Header, 413
hibyte, definition, 426
Hidden files, 89, 92, 388
High-Level Language, 21
HUGE communal variable, 447
IBM disk format, 392
Index fields, 425
Index Number, 427, 429
Index subfield, Thread
        External Index, 454
        Group Index, 454
        Segment Index, 454
Index
        definition, 425
Indices, 425
Indices, external, 448
Init, 338
INIT code, 334
Installable device drivers, 328
Instruction Pointer (IP), 401, 430
Instruction
        CALL, 427
        JUMP, 427
        SHORT-JUMP, 427
Internal stack, 22, 355
Interrupt entry point, 325, 326, 354
Interrupt handlers, 21, 39, 40, 41
Interrupt routines, 333
Interrupt-handling, 123
Interrupts
        21H, 3
        Address of handlers, 21
        alphabetic order, 27
        definition, 3
        Interrupt 20H, 36, 54
        Interrupt 21H, 38
        Interrupt 22H, 39
        Interrupt 23H, 40, 56, 58, 64, 70, 74
        Interrupt 24H, 41
        Interrupt 25H, 46
        Interrupt 26H, 49
        Interrupt 27H, 52
        issuing, 21
        numeric order, 27
        programming hints, 465
        Vector table, 21
I/O Control for Devices (Function 44H), 332
IOCtl, 11
IOCtl bit, 332
IOCtl Block (Function 44H, Codes 4 and 5), 197
IOCtl Character (Function 44H, Codes 2 and 3), 195
IOCtl Data (Function 44H, Codes 0 and 1), 192
IOCtl Is Changeable (Function 44H, Code 08H), 201
IOCtl Is Redirected Block (Function 44H, Code 09H), 203
IOCtl Is Redirected Handle (Function 44H, Code 0AH), 205
IOCtl Retry (Function 44H, Code 0BH), 207
IOCtl Status (Function 44H, Codes 6 and 7), 199
IP. See Instruction Pointer (IP)
Iterated Data Block field, LIDATA, 451
Iterated Data Offset field, LIDATA, 451
JUMP instruction, 427
Keep, 150
Keyboard layouts, national, NLS, 15, 405
Language
        C, 444
        FORTRAN, 444
Leaf Descriptor subfield, Eight Leaf Descriptor
        format
        FAR variable, 461
        NEAR variable, 461
        subfield
        NEAR, 461
        VARTYP, 461
LEDATA record
        field
        DAT, repeated, 451
        Enumerated Data Offset, 450
        Segment Index, 450
        schematic, 450
LEDATA
        field
        CHKSUM, 450
        Record Length, 450
        RECTYP, 450
        purpose, 450
Length fields, COMDEF, format, 445
Length in Bits subfield, Leaf Descriptor, 461
Length of Record Field, 335
LHEADR record
        field
        CHKSUM, 435
        L-module Name, 435
        Record Length, 435
        RECTYP, 435
        schematic, 435
LIDATA record
        field
        CHKSUM, 451
        Iterated Data Block, repeated, 451
        Iterated Data Offset, 451
        Record Length, 451
        RECTYP, 451
        Segment Index, 451
        purpose, 451
        schematic, 451
        subfield of Iterated Data Block
        Block Count, 452
        Content, 452
        Repeat Count, 452
Line Number Base field, LINNUM, 449
Line number, binary, 450
Line Number field, LINNUM, 450
Line Number Offset field, LINNUM, 450
Line Numbers Record (LINNUM), 449
LINK, 413
Linker, Microsoft, 419, 420, 422, 423, 424, 425, 431, 436, 438, 440, 442, 444, 446, 448, 450, 459
Link-time semantics, 446, 462
LINNUM record
        field
        CHKSUM, 449
        Line Number Base, 449
        Line Number Offset, repeated, 450
        Line Number, repeated, 450
        Record Length, 449
        RECTYP, 449
        purpose, 449
        schematic, 449
        subfield of Line Number Base
        Group Index, 449
        Segment Index, 449
List of Names Record (LNAMES), 436
L-module Header Record (LHEADR), 435
L-module Name, 436
LNAMES record, 432
        field
        CHKSUM, 436
        Name, repeated, 436
        Record Length, 436
        RECTYP, 436
        schematic, 436
Load and Execute Program (Function 4BH, Code 00H), 238
Load module, 413, 414
Load Overlay (Function 4BH, Code 03H), 242
Loadsize, 414
lobyte, definition, 426
Local Base field, LOCSYM, 447
Local buffering, 329
Local Name field, LOCSYM, 447
Local Offset field, LOCSYM, 447
Local symbol, 447, 448
Local Symbols Record (LOCSYM), 447
LOCAT subfield, Fixup
        internal structure, 454
        schematic, 454
Location
        types, 426
        base, 426
        hibyte, 426
        lobyte, 426
        offset, 426
        pointer, 426
Lock (Function 5CH, Code 00H), 275
LOCSYM record
        field, 447
        CHKSUM, 447
        Local Base, 447
        Local Name, repeated, 447
        Local Offset, repeated, 447
        Record Length, 447
        RECTYP, 447
        Type Index, repeated, 447
        order with respect to COMENT, 447
        purpose, 447
        schematic, 447
Logical Enumerated Data Record (LEDATA), 450
Logical Iterated Data Record (LIDATA), 451
Logical sector, 390
Logical sector numbers, 392
Logical Segment. See LSEG
LSEG
        absolute
        Combination attribute, 438
        Alignment attribute
        absolute segment, 437
        relocatable segment, 437
        canonic Frame, 429
        Class name, 422
        Combination attribute
        absolute segment, 438
        relocatable segment, 438
        combining, 438
        Complete name, 423
        definition, 421
        Overlay Name, 423
        relocatable
        byte-aligned, 437
        Combination attribute, 438
        page-aligned, 437
        paragraph-aligned, 437
        word-aligned, 437
        Segment Name, 422
Make Assign-List Entry (Function 5FH, Code 03H), 290
Mapping
        logical to physical starting address, 458
MAS. See Memory Address Space (MAS)
MATTR subfield, MOD TYP, 457
Maxalloc, 414
Media <Check, 340
Media descriptor byte, 340, 351
Media, determining, 353
Memory address, 430
Memory Address Space (MAS), 420, 439
Memory control block, 5
Memory image, 8086, 450
Memory image, LSEGs in, 424
Memory image, relocatable, 419
Memory management function requests, 5
Memory management, programming hints, 468
Memory model
        huge, 459
        large, 459
        medium, 459
        small, 459
Microprocessor
        80186, 419
        80286, 419
        8086, 419
Microsoft Extensions class, 447, 449
Microsoft linker, 419, 420, 422, 423, 424, 425, 431, 436, 438, 440, 442, 444, 446, 448, 450, 459
Microsoft Networks, 14, 467
Microsoft Networks Manager's Guide, 14
Microsoft Networks User's Guide, 14
Minalloc, 414
MOD TYP field, MODEND
        MATTR subfield, 457
        module attributes, 457
Mode, address, 427
Mode
        fixup
        segment-relative, 454
        self-relative, 454
MODEND record
        field
        CHKSUM, 457
        MOD TYP, 457
        Record Length, 457
        RECTYP, 457
        START ADDRS, conditional, 458
        purpose, 457
        schematic, 457
        subfield of START ADDRS
        Frame Datum, conditional, 458
        Target Datum, conditional, 458
        Target Displacement, conditional, 458
Module, definition, 420
Module End Record (MODEND), 457
Module header record, definition, 423
Module
        record ordering in, 431
Move File Pointer (Function 42H), 186
MS-DOS, 8086 object language, 419
MS-DOS initialization, 385
MS-DOS memory map, 397
MS-DOS User's Reference, 9
Multitasking, 325
Name field, 334
Name field, SAMREC, 434
Name Indices, 436
National keyboard layouts, NLS, 15, 405
National Language Support Function Requests, 15
National Language Support (NLS)
        restrictions, 405
        unsupported features, 405
National Language Support system calls, 406
NEAR data segment, 445
NEAR subfield, Leaf Descriptor, 461
NEAR variable format, Leaf Descriptor, 461
Network-related Function Requests, 14
Network-related function requests, 14
Non IBM format bit, 332
Non-destructive Read No Wait, 346
NUL device, 332
Number field, SAMREC, 434
Number of Elements subfield, Leaf Descriptor, 461
Object language, 8086, 419
Object Module Formats, 419
Object Module Formats (OMF), 420
Object module
        restrictions, 420
offset, definition, 426
Offset subfield, SEG ATTR, 439
Old system calls, 17
OMF. See Object Module Formats (OMF)
Open, 172
Open File (Function 0FH), 84
Opened FCB, 18
Operating system
        MS-DOS, 419
        PC-DOS, 419
        XENIX, 419
Overlay Name, definition, 423
Parameter block, 239
Parse, 133
Path command, 400
PC-DOS, 8086 object language, 419
Physical Segment. See PSEG
Pointer to Next Device field, 330
Predefined device handles, 9
Print Character (Function 05H), 64
Printer Setup (Function 5EH, Code 02H, 285
Process management function requests, 7
Process management, programming hints, 468
Processor. See Microprocessor
Program, 125
Program End Process (Interrupt 20H), 36
Program segment, 398
Program Segment Prefix, 18, 21, 41, 239, 398, 399, 414
Programming hints
        device management, 467
        file and directory management, 469
        file locking, 470
        interrupts, 465
        memory management, 468
        miscellaneous, 471
        process management, 468
        recommendations, 465
        system calls, 466
Programming interfaces, NLS, 15, 405
Prompt command, 400
Protected-mode
        application Frame Number, 431
PSEG
        definition, 421
PUBDEF record, 424, 429
PUBDEF record. See also
PUBDEF record
        field
        Public Base, repeated, 441
        Public Name, repeated, 443
        Public Offset, repeated, 443
        Record Length, 441
        RECTYP, 441
        Type Index, repeated, 443
        purpose, 441
        schematic, 441
        subfield of Public Base
        Frame Number, conditional, 442
        subfield, Public Base
        Frame Number, conditional, 441
        Group Index, 441
        Segment Index, 441
Public Base field, PUBDEF, 441
Public Name field, PUBDEF, 443
Public names definition record. See PUBDEF record
Public Names Definition Record (PUBDEF), 441
Public Offset field, PUBDEF, 443
Public symbol, 442, 448
Public variable, 444
Random, 114, 116, 127, 130
Read, 180
Read Keyboard and Echo (Function 01H), 56
Read Keyboard (Function 08H), 70
Read Only Memory, 385
Read or Write, 344
Record format
        abbreviation, 433
        bitfields, 435
        conditional field, 434
        repeated field, 434
Record formats, 419
Record format
        sample (SAMREC), 433
        SAMREC (sample record)
        CHKSUM field, 434
        Name field, 434
        Number field, 434
        Record Length field, 434
        SAMREC(sample record)
        RECTYP field, 434
        title, 433
Record Length field, SAMREC, 434
Record order
        definition, 431
        semantic rules, 431
        syntax, 431
Record Size, 98
Record
        COMDEF, 443, 462
        COMENT, 458
        comment, 432
        Data, 432
        EXTDEF, 432, 448, 462
        FIXUP, 427
        FIXUPP, 432, 452
        GRPDEF, 424, 432, 440
        LEDATA, 450
        LHEADR, 435
        LIDATA, 451
        LINNUM, 449
        LNAMES, 432, 436
        LOCSYM, 447
        MODEND, 457
        PUBDEF, 429, 441, 462
        RECTYP(record type), 433
        SAMREC (sample record), 433
        SEGDEF, 423, 432, 437
        symbol definition
        COMDEF, 424
        EXTDEF, 424
        PUBDEF, 424
        THEADR, 435
        TYPDEF, 462
RECTYP(record type)field, 433
Reference self-relative, 430
Reference
        segment-relative, 430
References
        WIRTH:CACM, Nov. 1977), 432
Register
        CS, 424
        DS, 424
        ES, 424
Registers, treatment of, 22
Register
        SS, 424
Relocatable memory image, 419
Relocatable segment, LSEG, 437
Relocation information, 413
Relocation item offset value to a word in the load, 415
Relocation table, 414
Remove, 166
Rename File (Function 17H), 102
Repeat Count subfield, Iterated Data Block, 452
request header, 334
Request packet, 325
Reset Disk (Function 0DH), 80, 98
Resident device drivers, 325
ROM, 385
Root directory, 387
SAMREC (sample record)
        schematic, 433
Search for First Entry (Function 11H), 89
Search for Next Entry (Function 12H), 92
Sector count, 354, 355
SEG ATTR field, SEGDEF, 437
SEGDEF record, 432
        definition, 423
        field
        CHKSUM, 437
        Class Name Index, 439
        Overlay Name Index, 440
        Record Length, 437
        RECTYP, 437
        SEG ATTR, 437
        Segment Name Index, 439
        schematic, 437
        subfield of SEG ATTR
        Alignment, 437
        Big, 439
        Combination, 438
        Offset, conditional, 439
SEGDEF recrod
        field
        Segment Length, 439
Segment addressing, 424
Segment definition record. See SEGDEF record
Segment Definition Record (SEGDEF), 437
Segment Index, 428, 429, 430, 437
Segment Index field, LEDATA, 450
Segment Index field, LIDATA, 451
Segment Index subfield, Group Component Descriptor, 441
Segment Index subfield, Line Number Base, 449
Segment Index subfield, Public Base, 442
Segment Length field, SEGDEF, 439
Segment Name, definition, 422
Segment Name Index field, SEGDEF, 439
Segment
        absolute, LSEG, 437, 439
        attribute
        Alignment, 437
        Combination, 438
        logical (LSEG), 421
        physical (PSEG), 421
Segment-relative fixup, 427, 431
Segment-relative reference, 430
Segment
        relocatable, LSEG, 437
Select Disk (Function 0EH), 82
Self-relative fixup, 427, 430, 455
Self-relative reference, 430
Semantic rules, record ordering, 432
Semantics, link-time, 446, 462
Sequential Read (Function 14H), 96
Sequential Write (Function 15H), 98
Set, 121, 123, 138, 142, 162
Set Block (Function 4AH), 235, 401
Set command, 400
Set Disk Transfer Address (Function 1AH), 106
Set Handle Count(Function 67H), 303
Set Interrupt Vector (Function 25H), 39, 40, 41
Set/Reset, 144
SHORT-JUMP instruction, 427
SS register, 424
Stack segment, SS, 424
Standard character I/O function requests, 4
START ADDRS field, MODEND
        Format, 458
Start sector, 354
Start segment value the relocation item offset, 415
static request header, 325
Status, 348
Status field, 336
Strategy entry point, 325, 326, 354
Strategy routines, 333
Subfield OFFH, 441
Subfield
        Comment Type
        Comment Class, 459
        Eight Leaf Descriptor
        EN, 461
        Leaf Descriptor, 461
        Fixup
        Frame Datum, 456
        Target Datum, 456
        Target Displacement, 456
        Frame Number, conditional, 441
        Group Component Descriptor
        Segment Index, 441
        Iterated Data Block
        Block Count, 452
        Content, 452
        Repeat Count, 452
        Leaf Descriptor
        Element Type Index, 461
        FAR, 461
        Length in Bits, 461
        NEAR, 461
        Number of Elements, 461
        VAR SUBTYP, 461
        VARTYP, 461
        Line Number Base, LINNUM
        Group Index, 449
        Segment Index, 449
        MOD TYP
        MATTR, 457
        Public Base
        Group INdex, 441
        SEG ATTR
        Alignment, 437
        Big, 439
        Combination, 438
        Segment Index, 441
        START ADDRS
        Frame Datum, 458
        Target Datum, 458
        Target Displacement, 458
        Thread
        Index, 454
        TRD DAT, 453
Superseded system calls, 17
Symbol definition, 424
Symbol definition record
        COMDEF, 424
        EXTDEF, 424
        PUBDEF, 424
Symbol
        local, 447, 448
        public, 442, 448
Syntax, record ordering, 432
Sysinit, 326
System call
        National Language Support
        406
System calls
        definition, 3
        programming hints, 466
        replacements for old, 17
System Calls
        superseded calls, 3
System calls
        types of, 3
System files, 89, 92, 388
System prompt, 386
System-management function requests, 15, 16
Target Datum field, FIXUPP, 448
Target Datum subfield, Fixup
        External Index, 456
        Group Index, 456
        Segment Index, 456
Target Datum subfield, START ADDRS, 458
Target Displacement subfield, Fixup, 456
Target Displacment subfield, START ADDRS, 458
Target
        definition, 427
        nomenclature, 428
        specification attribute, 456
        specifying, 427
        specifying, FIXUPP, 454
        Thread Number, FIXUPP, 454
Terminate But Stay Resident (Interrupt 27H), 52
Terminate Process Exit Address (Interrupt 22H), 39
Terminate Program (Function 00H), 54
THEADR record
        field
        CHKSUM, 435
        Record Length, 435
        RECTYP, 435
        T-module Name, 435
        schematic, 435
Thread Data subfield. See TRD DAT subfield, Thread
Thread field, FIXUPP
        data type
        Frame, 453
        Target, 453
        definition, 453
Thread Number, THRED, 454
T-module, definition, 420
T-module Header Record (THEADR), 435
T-Module Name, 435
Transfer address, 354
TRD DAT subfield, Thread
        D subfield, 453
        internal structure, 453
        Method subfield, 453
        schematic, 453
        THRED subfield, 453
TYPDEF record
        communal variable, 460
        field
        CHKSUM, 460
        Eight Leaf Descriptor, 461
        Record Length, 460
        RECTYP, 460
        subfield of Eight Leaf Descriptor
        EN, 461
        subfield of Leaf Descriptor
        Element Type Index, 461
        FAR, 461
        Length in Bits, 461
        NEAR, 461
        Number of Elements, 461
        VAR SUBTYP, optional, 461
        VARTYP, 461
Type Index field, COMDEF, 444
Type Index field, EXTDEF, 449
Type Index field, LOCSYM, 447
Type Index field, PUBDEF, 443
Type-ahead buffer, 349
Unit code field, 335
Unlock (Function 5CH, Code 01H), 280
Unopened FCB, 18
User Stack, 42
User stack, 398
Utility commands, NLS, 15, 405
VAR SUBTYP subfield, Leaf Descriptor, 461
Variable
        communal, 444, 460
        FAR, 446
        HUGE", 447
        NEAR, 446
        public, 444
VARTYP subfield, Leaf Descriptor
        ARRAY, 461
        SCALAR, 461
        STRUCT, 461
Vector table, 21
Volume ID, 343
Volume label, 388
Wildcard, 134
Wildcard characters, 89, 92
Write Handle (Function 40H), 182
XENIX, 8086 object language, 419



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