Int 2F/AX=1684h/BX=000Fh

MS Windows - VPD - GET API ENTRY POINT

AX = 1684h
BX = 000Fh (virtual device ID for VPD device) (see #02642)
ES:DI = 0000h:0000h

Return:
ES:DI -> VxD API entry point (see #02653)
0000h:0000h if the VxD does not support API in current mode

See Also: AX=1684h"DEVICE API" - INT 20"Windows"



(Table 02653)
Call VPD entry point with:.
EDX = function number
0000h get VPD version
Return:
CF clear
AH = major version
AL = minor version
DX = ??? (CB01h)
0001h get valid??? printers
Return:
CF clear
AX = bitmask of ??? printers (bits 0-2)
0002h get ??? for printer
CX = printer port (0-2)
Return:
CF clear if successful
BX:AX = ???
CF set on error (invalid port number)
0003h set ??? for printer
CX = printer port (0-2)
BX:AX = ???
Return:
CF clear if successful
CF set on error (invalid port number)
0004h ???
CX = printer port (0-2)
EAX = VM handle
Return:
CF clear if successful
CF set on error (invalid port number)
0005h ???
CX = printer port (0-2)
EAX = VM handle
Return:
CF clear if successful
CF set on error (invalid port number or ???)
0006h-000Eh unused
Return:
CF set
000Fh ???
CX = printer port (0-2)
AX = ???
Return:
CF clear if successful
CF set on error (e.g. invalid port number)
0010h ???
CX = printer port (0-2)
Return:
CF clear if successful
CF set on error (e.g. invalid port number)
0011h ???
CX = printer port (0-2)
Return:
CF clear if successful
CF set on error (e.g. invalid port number)
0012h get port status
CX = printer port (0-2)
Return:
CF clear if successful
AX = port status (see #P0658 at PORT 03BCh"LPT")
CF set on error (e.g. invalid port number)
else
Return:
CF set

Note: These functions are apparently only available from the system VM, returning CF set

See Also: #02652 - #02654

Category: Windows - Int 2Fh - M

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