Int 2F Fn 7AF1 - Novell Netware - Access Server Driver - Installation Ch [N]
AX = 7AF1h
BL = sequence number (01h first driver, 02h second, 00h no driver)
Return: AX <> 7AF1h if present
BH = total number of drivers
---if BL nonzero on entry---
AL = number of ports provided by specified driver
ES:DI -> driver entry point
(see #2596,#2597,#2598,#2599,#2600,#2601,#2602,#2603)
ES:DX -> ID string
See Also: INT 7A/BX=001Ch
(Table 2596)
Call Access Server driver "initialize port" function with:
AH = 01h
AL = port number (00h-0Fh)
ES:BX -> configuration parameter block (see #2609)
interrupts disabled
Return: CF clear if successful
CF set on error
See Also: #2597
(Table 2597)
Call Access Server driver "get port status" function with:
AH = 02h
AL = port number (00h-0Fh)
interrupts disabled
Return: CF clear if successful
BL = transmitter status (see #2606)
BH = receiver status (see #2607)
DL = external status signals (see #2608)
CF set on error
interrupts disabled
See Also: #2596,#2598,#2601
(Table 2598)
Call Access Server driver "get input from port" function with:
AH = 03h
AL = port number (00h-0Fh)
CX = size of data buffer
ES:BX -> buffer for data
interrupts disabled
Return: CF clear if successful
CF set on error
interrupts disabled
CX = number of bytes read
Note: the driver will add a NUL to the buffer when a break signal is detected
See Also: #2598,#2599
(Table 2599)
Call driver "send output data to port" function with:
AH = 04h
AL = port number (00h-0Fh)
CX = number of bytes to send
ES:BX -> buffer containing data
interrupts disabled
Return: CF clear if successful
CF set on error
interrupts disabled
CX = number of bytes actually written
See Also: #2598,#2600
(Table 2600)
Call driver "get I/O character counts" function with:
AH = 05h
AL = port number (00h-0Fh)
interrupts disabled
Return: CF clear if successful
BX = number of bytes pending transmission
CX = number of bytes available for reading
CF set on error
interrupts disabled
See Also: #2598,#2599
(Table 2601)
Call driver "control XON/XOFF" function with:
AH = 06h
AL = port number (00h-0Fh)
DL = new state
(00h software flow control disabled, else enabled)
interrupts disabled
Return: CF clear if successful
CF set on error
interrupts disabled
See Also: #2602
(Table 2602)
Call driver "get error counts and statistics" function with:
AH = 07h
AL = port number (00h-0Fh)
ES:BX -> buffer for statistics (see #2610)
interrupts disabled
Return: CF clear if successful
ES:BX buffer filled
CF set on error
interrupts disabled
See Also: #2603,#2604,#2605
(Table 2603)
Call driver "general request" function with:
AH = 08h
AL = port number (00h-0Fh)
DX = requested operations
bit 0: flush transmit buffers
bit 1: flush receive buffers
bit 4: define XON/XOFF characters
ES:BX -> XON/XOFF characters (see #2611) if DX bit 4 set
interrupts disabled
Return: CF clear if successful
CF set on error
interrupts disabled
(Table 2604)
Call driver "deadman timer management" function with:
AH = 09h
AL = port number (00h-0Fh)
BX = next time interval in seconds (0000h to disable timer)
interrupts disabled
Return: CF clear
interrupts disabled
See Also: #2605
(Table 2605)
Call driver "get buffer sizes" function with:
AH = 0Ah
AL = port number (00h-0Fh)
interrupts disabled
Return: CF clear if successful
BX = size of transmit buffer
CX = size of receive buffer
CF set on error
interrupts disabled
See Also: #2604
(Table 2606)
Values for Access Server transmitter status:
00h uninitialized
01h ready, not transmitting
02h transmitting
03h XOFF received
04h transmitting, buffer full
05h XOFF received and buffer full
(Table 2607)
Values for Access Server receiver status:
00h uninitialized
01h ready
02h receive buffer full, data may have been lost
Bitfields for external status signals:
Bit(s) Description (Table 2608)
7,6 undefined
5 CTS active
4 DSR active
3 DCD active
2,1 undefined
0 ring indicator
Format of Access Server configuration parameter block:
Offset Size Description (Table 2609)
00h BYTE receive baud rate index
00h 50 bps, 01h 75 bps, 02h 110 bps, 03h 134.5 bps,
04h 150 bps, 05h 300 bps, 06h 600 bps, 07h 1200 bps,
08h 1800 bps, 09h 2000 bps, 0Ah 2400 bps, 0Bh 3600 bps,
0Ch 4800 bps, 0Dh 7200 bps, 0Eh 9600 bps, 0Fh 19200 bps,
10h 38400 bps, 11h 57600 bps, 12h 115200 bps
01h BYTE receive bits per character (0=5 bits..3=8 bits)
02h BYTE receive stop bits
03h BYTE receive parity
00h none, 01h odd, 02h even, 03h mark, 04h space
04h BYTE transmit baud rate index (same as receive baud rate)
05h BYTE transmit bits per character (0=5 bits..3=8 bits)
06h BYTE transmit stop bits
07h BYTE transmit parity (same as receive parity)
08h BYTE DTR state (00h off, 01h on)
09h BYTE RTS state (00h off, 01h on)
0Ah BYTE flow control (00h none, 01h XON/XOFF, 02h RTS/CTS, 03h both)
0Bh BYTE break control (00h off, 01h on)
Format of Access Server statistics:
Offset Size Description (Table 2610)
00h BYTE port number
01h BYTE external status signals (see #2608)
02h BYTE transmitter status (see #2606)
03h BYTE receiver status (see #2607)
04h DWORD number of characters received
08h DWORD number of characters transmitted
0Ch WORD input parity errors
0Eh WORD input framing errors
10h WORD lost characters due to hardware overrun
12h WORD lost characters due to data buffer overrun
Note: the counts are not allowed to wrap around; once a count reaches FFFFh
or FFFFFFFFh, it is no longer incremented
Format of Access Server XON/XOFF characters:
Offset Size Description (Table 2611)
00h BYTE 04h (number of bytes following)
01h BYTE transmit XON character
02h BYTE transmit XOFF character
03h BYTE receive XON character
04h BYTE receive XOFF character