Int 21/AX=4402h

Prev Next Ralf Interrups Categories Contents

------

WORKGRP.SYS - GET API ENTRY POINT

AX = 4402h
BX = file handle for device "NET$HLP$"
CX = 0008h
DS:DX -> buffer for entry point record (see #01485)

Return:
CF clear if successful AX = number of bytes actually read CF set on error AX = error code

Program: WORKGRP.SYS is the portion of Microsoft's Workgroup Connection which permits communication with PCs running Windows for Workgroups or LAN Manager

See Also: AH=3Fh"WORKGRP.SYS"

Format of WORKGRP.SYS entry point record: Offset Size Description (Table 01485) 00h WORD 3633h \ signature??? 02h WORD EF6Fh / 04h DWORD address of entry point (see #01486)

Note: First four bytes of buffer must be 6Fh E9h 33h 36h on entry when using IOCTL rather than READ to get the entry point record

(Table 01486) Call WORKGRP entry point with:.

STACK:
WORD function number (0000h-0009h)

Return:
STACK unchanged

See Also: #01487 - #01488 - #01489 - #01490 - #01491 - #01492 - #01493 - #01494

(Table 01487) Call WORKGRP function 00h with:.

STACK:
WORD 0000h (function "get ???")

Return:
DX:AX -> data table

(Table 01488) Call WORKGRP function 01h with:.

STACK:
WORD 0001h (function "hook ???")

Return:
STACK: DWORD pointer to ??? WORD 0001h (function number)

(Table 01489) Call WORKGRP function 02h with:.

STACK:
WORD 0002h (function "unhook ???"). ???

Return:
???

(Table 01490) Call WORKGRP function 03h with:.

STACK:
WORD 0003h (function "reenable printer port") WORD LPT port number

Return:
???

(Table 01491) Call WORKGRP function 04h with:.

STACK:
WORD 0004h (function "disable printer port") WORD LPT port number

Return:
???

(Table 01492) Call WORKGRP function 05h with:.

STACK:
WORD 0005h (function "???") ???

Return:
???

(Table 01493) Call WORKGRP function 06h with:.

STACK:
WORD 0006h (function "???")

Return:
STACK unchanged AX = 0000h DX = 0000h

(Table 01494) Call WORKGRP functions 07h-09h with:.

STACK:
WORD 0007h-0009h (NOP functions)

Return:
STACK unchanged AX = 0001h DX = 0000h

Category: Network - Int 21h - W

------

Prev Next Ralf Interrups Categories Contents