name:         DP5380_DIP40
function:     Asynchronous SCSI interface
package:      DIP40,40
manufacturer: National Semiconductor

    +--()--+
 d0 | 1  40| d1
db7 | 2  39| d2
db6 | 3  38| d3
db5 | 4  37| d4
db4 | 5  36| d5
db3 | 6  35| d6
db2 | 7  34| d7
db1 | 8  33| a2
db0 | 9  32| a1
dbp |10  31| Vcc
gnd |11  30| ao
sel |12  29| wr
bsy |13  28| reset
ack |14  27| eop
atn |15  26| dack
rst |16  25| ready
i/o |17  24| rd
c/d |18  23| int
msg |19  22| drq
req |20  21| cs
    +------+


This pinout came from the Chipdir:
http://www.chipdir.org/

name:         DP5380_PLCC44
function:     Asynchronous SCSI interface
package:      PLCC44,44
manufacturer: National Semiconductor

+---------+---------+-----------+---------+
|  1 - nc | 12 - gnd| 23 - nc   | 34 - nc |
|  2 - d0 | 13 - gnd| 24 - cs   | 35 - Vcc|
|  3 - db7| 14 - sel| 25 - drq  | 36 - a1 |
|  4 - db6| 15 - bsy| 26 - int  | 37 - a2 |
|  5 - db5| 16 - ack| 27 - rd   | 38 - d7 |
|  6 - db4| 17 - atn| 28 - ready| 39 - d6 |
|  7 - db3| 18 - rst| 29 - dack | 40 - d5 |
|  8 - db2| 19 - i/o| 30 - eop  | 41 - d4 |
|  9 - db1| 20 - c/d| 31 - reset| 42 - d3 |
| 10 - db0| 21 - msg| 32 - wr   | 43 - d2 |
| 11 - dbp| 22 - req| 33 - ao   | 44 - d1 |
+---------+---------+-----------+---------+


This pinout came from the Chipdir:
http://www.chipdir.org/