>>> Install Universal PCCOM Driver <<<

1. Login as a root user.

2. install all relative files
   # cd /
   # doscp a:dc.tz ./dc.tar.Z   ["dosget" in Interactive Unix]
   # zcat dc.tar | tar xvfp -

3. # cd /usr/sys/pccom/dc

4. Install PCCOM driver to the kernel.
   # ./install

5. Installing PCCOM 2/4/8-Port Device Driver for SCO UNIX System V.
   Press < Enter > to continue ....

6. How many ports in each PCCOM card do you want ( 2,4,8,a(bort) ) ?
   Press < 8 >

7. Is the speed of every PCCOM card "4X" ?
   Press < N >

8. How many PCCOM 8-Port cards are you installing ? 
   Press < 1 >

9. Which card do you like to setup ?
   Press < n >
 
10. Successfully Configure Cards.
    Press < Enter > to continue ....

11. PCCOM 8-Port name created as ttyj<c><x>, ttyJ<c><x>
    < c > - card number ( 1 )
    < x > - port identifier ( 1,2,3,4,5,6,7,8 )
    Would you like to adapt defaults tty name ?
    Press < y > 

12. Select baud rate for all ports ? 
    1) 1200 B   2) 2400 B   3) 9600 B   4) 19200 B   5) 38400 B
    Press < 3 > 

13. Now, start building new kernel, Press < Enter > to continue ....

14. Do you want this kernel to boot by default ?
    Press < y >

15. Do you want the kernel environment rebuilt ?
    Press < y >

16. It is successful to configure kernel. Press < Enter > to continue ....

17. New kernel Environment installed. Press < Enter > to continue ....

18. Before enabling terminals, please reboot the system to load new kernel,
    Press < Enter > to be end ....

19. reboot


>>> Remove Universal PCCOM Driver <<<

1. Login as a root user

2. # cd /usr/sys/pccom/dc

3. Remove PCCOM Driver from the kernel
   # ./remove


>>> Default Hardware Configuration of PCCOM 2-Port RS232/422 <<<

For XENIX :

1. First adapter
   I/O port address : 2A0H
   interrupt level  : IRQ4

2. Second adapter
   I/O port address : 1A0H
   interrupt level  : IRQ3

For UNIX :

1. First adapter
   I/O port address : 2A0H
   interrupt level  : IRQ4

2. Second adapter
   I/O port address : 1A0H
   interrupt level  : IRQ3


>>> Default Hardware Configuration of PCCOM 4-Port RS232/422 <<<

For XENIX :

1. First adapter
   I/O port address : 2A0H
   vector address   : 2BFH
   interrupt level  : IRQ4

2. Second adapter
   I/O port address : 1A0H
   vector address   : 1BFH
   interrupt level  : IRQ3

For UNIX :

1. First adapter
   I/O port address : 2A0H
   vector address   : 2BFH
   interrupt level  : IRQ4

2. Second adapter
   I/O port address : 1A0H
   vector address   : 1BFH
   interrupt level  : IRQ3


>>> Default Hardware Configuration of PCCOM 8-Port RS232/422 <<<

   1. Primary adapter
      I/O port address : 280H
      Interrupt vector : 2C0H
      interrupt level  : IRQ10

   2. Secondary adapter
      I/O port address : 240H
      Interrupt vector : 2D0H
      interrupt level  : IRQ12

For UNIX :                             For XENIX :

   3. Third adapter                       3. Third adapter
      I/O port address : 100H                I/O port address : 100H
      Interrupt vector : 140H                Interrupt vector : 140H
      interrupt level  : IRQ4                interrupt level  : IRQ4

   4. Fourth adapter                      4. Fourth adapter
      I/O port address : 180H                I/O port address : 180H
      Interrupt vector : 1C0H                Interrupt vector : 1C0H
      interrupt level  : IRQ3                interrupt level  : IRQ3


>>> The Possible IRQ Options of each PCCOM 2/4/8 Card <<<
    [ 3, 4, 5, 7, 10, 11, 12, or 15 ]


>>> Default Device Names to PCCOM 2/4/8-Port Driver <<<

1. The Device Name to PCCOM 2-Port Driver is /dev/ttyXYY

   X:  k(for null modem)
       K(for modem)

   YY: 11, 12(for the first card)
       21, 22(for the second card)

2. The Device Name to PCCOM 4-Port Driver is /dev/ttyXYY

   X:  i(for null modem)
       I(for modem)

   YY: 11, 12, 13, 14(for the first card)
       21, 22, 23, 24(for the second card)


3. The Device Name to PCCOM 8-Port Driver is /dev/ttyXYY

   X:  j(for null modem)
       J(for modem)

   YY: 11, 12, 13, 14, 15, 16, 17, 18(for the first card)
       21, 22, 23, 24, 25, 26, 27, 28(for the second card)
       31, 32, 33, 34, 35, 36, 37, 38(for the third card)
       41, 42, 43, 44, 45, 46, 47, 48(for the fourth card)


>>> Enclosed Uilities for PCCOM 2/4/8-Port Driver <<<

1. For USL Unix, Interactive Unix

   1.1 Enable terminal
       # entty tty...

   1.2 Disable terminal
       # distty tty...


>>> Option for High Speed <<<

1. If you would like High-Speed Baud Rate for 16650 only,
   you can specify when installing.

2. If you choose High-Speed Baud Rate, the configuration of Baud Rate is
   changed as follows:

   Original             Extensible
   50                   14.4 K
   75                   28.8 K
   110                  57.6 K
   134                  76.8 K
   150                  115.2 K
   200                  153.6 K
   300                  230.4 K
   600                  460.8 K
   1200                 1200    (unchanged)
   2400                 2400    (unchanged)
   4800                 4800    (unchanged)
   9600                 9600    (unchanged)
   EXTA                 19200   (unchanged)
   EXTB                 38400   (unchanged)


>>> Transparent Printer upon the Universal PCCOM Driver <<<

1. The default device names to Transparent Printer(TP) are /dev/lpXYY,
   that is, the prefix name is changed from "tty" to "lp" but the other
   "XYY" is the same.

2 How to use TP

  2.1 Firstly, the corresponding TTY line must be opened formerly;

      2.1.1 e.g. under default device names, the corresponding TTY line of
            /dev/lpi11 is /dev/ttyi11.

      2.1.2 If the /dev/ttya01 is used for a TTY, it has to be enabled before
            you would like to print data through /dev/lpi11 to a printer
            connected to the terminal which is operated via /dev/ttyi11.

  2.2 Actually, any data transmission by means of /dev/lpXYY or /dev/ttyXYY
      is through the same serial line from PCCOM cards.

      2.2.1 By multiplexing a serial line, there are two sorts of data
            channels for TTY data(by /dev/ttyXYY) and TP data(by
            /dev/lpXYY).

      2.2.2 The channel for TP data which is uni-directional is used to
            transmit the data from a host to a terminal only.

      2.2.3 How to differentiate TTY data and TP data in the same serial line
            is that TP data are encapsulated within a couple of PRINT-ON and
            PRINT-OFF escape strings which are recognized by connected
            terminals.

      2.2.4 The PRINT-ON and PRTIN-OFF is defined by connected terminals.

  2.3 The scheme to multiplex a serial line for these two channels is based
      on time-division method.

      2.3.1 The time slices for TTY or TP data are generated according to the
            entry procedure, polling, in the PCCOM driver, which is
            periodically called by system clock.

      2.3.2 The period of system clocks are different among various
            operating systems, e.g. most Unixs is 100hz, but SCO Xenix is 50hz.

  2.4 The interval reserved for TTY or TP channel in the same serial line
      is important to output TP data to a low-speed printer through
      high-throughput line from PCCOM cards if there is no flow control
      XON/XOFF to the serial line.

  2.5 There is a utility "lpx" to adjust the time interval for TTY or TP data
      and the TP protocol.

      2.5.1 Usage:
            lpx [option] device_name
            option:
               -t number: set interval for TTY
               -l number: set interval for Transparent Printer
               -n string: set esc string to turn on printer
               -f string: set esc string to turn off printer
               -T : get interval for TTY
               -L : get interval for Transparent Printer
               -N : get esc_string to turn on printer
               -F : get esc_string to turn off printer
            device_name : lp<c><x>
               <c> : a, b, c, d, A, B, C, D
               <x> : 01, 02, 03, 04, 05, 06, 07, 08

      2.5.2 The range of interval reserved for TTY or TP channel is from 1 to
            maximum integer.

      2.5.3 The default setting for any /dev/lpXYY is as follows

            Interval for TTY : 50
            Interval for TP  : 1
            PRINT-ON escape  : "\033[5i" (ESC[5i)
            PRINT-OFF escape : "\033[4i" (ESC[4i)

      2.5.4 Examples to invoke lpx

            1. set 60 time slices reserved for /dev/ttya01

               # lpx -t 60 /dev/ttya01

            2. set 2 time silces reserved for /dev/lpa01

               # lpx -l 2 /dev/lpa01

            3. get the time slices reserved for /dev/lpa01

               # lpx -L /dev/lpa01

            4. set PRINT-ON string for /dev/lpa01

               # lpx -n "\033[5i" /dev/lpa01

            5. get PRINT-OFF string for /dev/lpa01

               # lpx -F /dev/lpa01
               \033[4i