ribbon cable interface to ISA bus


Additionally, students can purchase their own ordinary breadboards, and plug into the solderless breadboards by way of a ribbon cable:
|  Pin  |  ISA Signal  |  Pin  |  ISA Signal  |
-----------------------------------------------
|   1   |      A0      |   2   |     VCC      |
-----------------------------------------------
|   3   |      A1      |   4   |     N/A      |
-----------------------------------------------
|   5   |      A2      |   6   |     N/A      |
-----------------------------------------------
|   7   |      A5      |   8   |     N/A      |
-----------------------------------------------
|   9   |      A6      |  10   |     N/A      |
-----------------------------------------------
|  11   |      A7      |  12   |     N/A      |
-----------------------------------------------
|  13   |      A8      |  14   |     N/A      |
-----------------------------------------------
|  15   |      A9      |  16   |     N/A      |
-----------------------------------------------
|  17   |      AEN     |  18   |     N/A      |
-----------------------------------------------
|  19   |      IOR     |  20   |     N/A      |
-----------------------------------------------
|  21   |      IOW     |  22   |     N/A      |
-----------------------------------------------
|  23   |      N/A     |  24   |     N/A      |
-----------------------------------------------
|  25   |      D0      |  26   |     N/A      |
-----------------------------------------------
|  27   |      D1      |  28   |     N/A      |
-----------------------------------------------
|  29   |      D2      |  30   |     N/A      |
-----------------------------------------------
|  31   |      D3      |  32   |     N/A      |
-----------------------------------------------
|  33   |      D4      |  34   |     N/A      |
-----------------------------------------------
|  35   |      D5      |  36   |     N/A      |
-----------------------------------------------
|  37   |      D6      |  38   |     N/A      |
-----------------------------------------------
|  39   |      D7      |  40   |     GND      |
-----------------------------------------------

A satisfactory breadboard is available from Active Surplus (As of Thurs. September 28th, 2000, Chris who works at Active reports that there are 27 in stock), which has 5 distribution strips and 3 terminal strips.

Other kinds of breadboards available from various vendors are also suitable.

It is preferable to have a breadboard wired up prior to class unless a student is exceptionally skilled in art of wiring to wire it up in class. Also, if each group purchases a breadboard, then the group can keep their circuit wired up for subsequent labs which build on this lab.