2-2
Section
ISA Board Installation
18
Set the I/O port addresses with the DIP switch as shown in the following table. Be
sure to set a range of addresses that isn’t being used by another device in order
to avoid a conflict. (A pin setting of 0 is OFF and 1 is ON.)
I/O port addresses
DIP switch pin settings
Remarks
(Hexadecimal)
1
2
3
4
5
6
200 to 207
0
0
0
0
0
0
Used for the game port.
208 to 20F
1
0
0
0
0
0
---
210 to 217
0
1
0
0
0
0
---
218 to 21F
1
1
0
0
0
0
---
220 to 227
0
0
1
0
0
0
---
228 to 22F
1
0
1
0
0
0
---
230 to 237
0
1
1
0
0
0
---
238 to 23F
1
1
1
0
0
0
---
240 to 247
0
0
0
1
0
0
---
248 to 24F
1
0
0
1
0
0
---
250 to 257
0
1
0
1
0
0
Factory default setting.
258 to 25F
1
1
0
1
0
0
---
260 to 267
0
0
1
1
0
0
---
268 to 26F
1
0
1
1
0
0
---
270 to 277
0
1
1
1
0
0
---
278 to 27F
1
1
1
1
0
0
Used for LPT2.
280 to 287
0
0
0
0
1
0
---
288 to 28F
1
0
0
0
1
0
---
290 to 297
0
1
0
0
1
0
---
298 to 29F
1
1
0
0
1
0
---
2A0 to 2A7
0
0
1
0
1
0
---
2A8 to 2AF
1
0
1
0
1
0
---
2B0 to 2B7
0
1
1
0
1
0
---
2B8 to 2BF
1
1
1
0
1
0
---
2C0 to 2C7
0
0
0
1
1
0
---
2C8 to 2CF
1
0
0
1
1
0
---
2D0 to 2D7
0
1
0
1
1
0
---
2D8 to 2DF
1
1
0
1
1
0
---
2E0 to 2E7
0
0
1
1
1
0
---
2E8 to 2EF
1
0
1
1
1
0
Used for COM port 4.
2F0 to 2F7
0
1
1
1
1
0
---
2F8 to 2FF
1
1
1
1
1
0
Used for COM port 2.
Note There are some boards marketed that cannot distinguish between I/O port
addresses 200 through 2FF and addresses 600 through 6FF. If one of these
boards is allocated address 2
jj
, it will occupy address 6
jj
as well.
To avoid any possible conflicts when assigning an address between 600 and
6FF, be sure to assign an address that corresponds to an unused address
between 200 and 2FF. (For example if 6A0 to 6A7 are selected, make sure that
2A0 to 2A7 are unused.)
2-2-4 Installation in the Computer
The ISA Board must be installed into one of the personal computer’s expansion
slots (ISA slots). When installing the board, turn off the computer’s power and
take precautions against static electricity. Refer to the computer’s user’s manual
for detailed installation procedures.