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

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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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