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- MS400.1
- Carrying out the change:
- ------------------------
-
- Example will use COM2 as a multipurpose port and COM 3,4,5 for BBS.
-
-
- 1. Referring to your MS-400 booklet, set the address dip switches (SW1)
- for the lowest port you want to use. Example: COM2 (off off on).
-
- 2. Set the dip switches that select the IRQ lines for the multipurpose
- ports ONLY!! COM1 uses IRQ4, COM2 uses IRQ3. Example: SW2 #2 is on
- while all the rest are off.
-
- 3. Turn over the card to the side without the parts and locate the
- pins that correspond to the dip switches SW2 and SW3.
-
- 4. For each BBS only port, solder a diode across the DIP switch
- position that corresponds to IRQ2. The cathode should be away
- from the edge connector. The diode makes the path that the switch
- would have. One way to find the exact position is to turn on IRQ2
- for all the BBS ports and test for the proper pins with an ohm
- meter. Solder the diodes in place and then TURN OFF the IRQ2
- switches.
- CONTINUED IN FILE MS400.3