INT 2F - Novell NetWare - Access Server Driver - INSTALLATION CHECK 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 #02910,#02911,#02912,#02913,#02914,#02915,#02916,#02917) ES:DX -> ID string SeeAlso: INT 7A/BX=001Ch (Table 02910) Call Access Server driver "initialize port" function with: AH = 01h AL = port number (00h-0Fh) ES:BX -> configuration parameter block (see #02923) interrupts disabled Return: CF clear if successful CF set on error SeeAlso: #02911 (Table 02911) 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 #02920) BH = receiver status (see #02921) DL = external status signals (see #02922) CF set on error interrupts disabled SeeAlso: #02910,#02912,#02915 (Table 02912) 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 SeeAlso: #02912,#02913 (Table 02913) 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 SeeAlso: #02912,#02914 (Table 02914) 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 SeeAlso: #02912,#02913 (Table 02915) 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 SeeAlso: #02916 (Table 02916) Call driver "get error counts and statistics" function with: AH = 07h AL = port number (00h-0Fh) ES:BX -> buffer for statistics (see #02924) interrupts disabled Return: CF clear if successful ES:BX buffer filled CF set on error interrupts disabled SeeAlso: #02917,#02918,#02919 (Table 02917) 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 #02925) if DX bit 4 set interrupts disabled Return: CF clear if successful CF set on error interrupts disabled (Table 02918) 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 SeeAlso: #02919 (Table 02919) 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 SeeAlso: #02918 (Table 02920) 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 02921) 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 02922) 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 02923) 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 02924) 00h BYTE port number 01h BYTE external status signals (see #02922) 02h BYTE transmitter status (see #02920) 03h BYTE receiver status (see #02921) 04h DWORDDoubleword; four bytes. Commonly used to hold a 32-bit segment:offset or selector:offset address. number of characters received 08h DWORDDoubleword; four bytes. Commonly used to hold a 32-bit segment:offset or selector:offset address. 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 02925) 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