| 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.