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README.md
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@ -71,7 +71,31 @@ Using the premade files will have the 13-sector image loaded when jumpers on J1
### Configuring the address
**TODO**
The address for the I/O ports (DEVICE SELECT) can be changed by jumpering J3.
```
J3: DEVICE SELECT
C C C C C C C C
0 0 0 0 0 0 0 0
8 9 A B C D E F
x x x x x x x x
^ default
```
The address for the ROM (I/O SELECT... confusing, I know) can be set by jumpering J2.
```
J2: I/O SELECT
C C C C C C C C
1 3 5 7 9 B D F
x x x x x x x x
x x x x x x x x
^ default
```
The defaults are marked on the board.
### Ordering the boards