Int 2F/AX=1684h/BX=377Bh

MS Windows - MX1501HAD - GET API ENTRY POINT

AX = 1684h
BX = 377Bh (virtual device ID for MX1501HAD device)
ES:DI = 0000h:0000h

Return:
ES:DI -> VxD API entry point (see #02708)
0000h:0000h if the VxD does not support an API

Note: The drivers VCMD95C.VXD and VCMD.386 are part of the driver disks provided with the chip-card-reader/keyboard combination MX 1501 HAD, produced by Cherry

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



(Table 02708)
Call CHERRY VCMD95C.VXD entry point with:.
AX = function
0001h get version
Return:
AX = version number (0100h) (AH = major, AL = minor)
0002h hook INT 09 (and 8???)
0003h unhook INT 09 (and 8???)
0004h get number of bytes in FIFO
Return:
AX = bytes in FIFO
0005h get next FIFO-data
Return:
AX = data
BL = port number
BH = direction (1=in, 0=out)
DX:CX = timestamp
0006h clear FIFO
0007h output byte
DX = port number
BL = keyboard command
Return:
Data in FIFO (see #02710)
(value, port, in/out, timestamp)
0008h input byte
DX = port number
Return:
Data in FIFO (see #02710)
(value, port, in/out, timestamp)
0009h input byte immediately
DX = port number
Return:
AX = data
000Ah read next FIFO data (nondestructive)
Return:
AX = data
BL = port number
BH = direction (1=in, 0=out)
DX:CX = timestamp
000Bh get timestamp
Return:
DX:CX = timestamp (in ms)
000Ch enable IRQ 1
000Dh disable IRQ 1
000Eh enable data retrieval

Note: Sets a flag in the internal mode-byte which tells the driver to recognize the data 000Fh disable data retrieval

Note: Resets a flag in the internal mode-byte 0010h get retrieval mode

Return:
AX = current retrieval mode
0011h set retrieval mode
BX = new retrieval mode (see #02709)
Return:
AX = old retrieval mode
0012h get command value
Return:
AX = command value
0013h set command value
BX = command value

See Also: #02706 - #02711


Bitfields for retrieval mode:

Bit(s)  Description     (Table 02709)
0      enable data retrieval
1      0 = interrupt-driven.
1 = polling mode
2      0 = read port 60h everytime.
1 = read port 60h only when OBF of port 64h is set
3      0 = don't call old INT 9.
1 = call INT 9 before our INT-handler
4-7    reserved

See Also: #02708 - #02710


Format of FIFO entry (1024 entries in FIFO):

Offset  Size    Description     (Table 02710)
00h    BYTE    data byte
01h    BYTE    I/O port
02h    BYTE    direction (1=in, 0=out)
03h    BYTE    reserved
04h    DWORD   timestamp

See Also: #02708 - #02709

Category: Uncatagorized - Int 2Fh - M

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