| 501-1316 | 501-1742 |
|---|---|
| 8MB w 1MB SIMMS |
32MB w 4MB SIMMS |
| JUMPER | PINS | SETTING | DESCRIPTION |
|---|---|---|---|
| J0200 | 1-2 3-4 5-6 |
In In Out |
FPC normally low FPC normally low FPC normally high |
| J0900 | 1-2 | In | Enable Sysclock |
| J1900 | 1-2 1-2 |
In Out |
CPU has 4MB SIMMs CPU has 1MB SIMMs |
| J2100 J2101 |
1-2 In |
In Out |
Enable 27512 EPROM Enable 27256 EPROM |
| J2302 J2303 |
1-2 1-2 |
In In |
Set Ports A,B to RS-232 (+ 12V) Set Ports A,B to RS-232 (- 12V) |
| J2302 J2303 |
2-3 2-3 |
In In |
Set Ports A,B to RS-423 (+ 5V) Set Ports A,B to RS-423 (- 5V) |
| J2400 | 1-2 | In | Enable serial port clock |
| J2402 | 1-2 2-3 |
Out In |
Mouse TD enabled (optional) Mouse TD grounded (default) |
| J2502 J2503 |
1-2 1-2 |
In In |
Set Ports C,D to RS-232 (+ 12V) Set Ports C,D to RS-232 (- 12V) |
| J2502 J2503 |
2-3 2-3 |
In In |
Set Ports C,D to RS-423 (+ 5V) Set Ports C,D to RS-423 (- 5V) |
| J2701 J2800 J2801 J2803 |
1-2 1-2 1-2 1-2 |
Out In In Out |
Disable VME loopback Enable VME reset Out Enable VME arbiter Enable VME reset IN |
| J2900 | 1-2 | In | Enable 16 MHz clock to backplane |
| J3001 | 1-2 3-4 5-6 7-8 9-10 11-12 13-14 15-16 |
In/Out In In In In In In In |
Not connected Enable VME interrupt level 1 Enable VME interrupt level 2 Enable VME interrupt level 3 Enable VME interrupt level 4 Enable VME interrupt level 5 Enable VME interrupt level 6 Enable VME interrupt level 7 |
| J3100 | 1-2 | In | Enable 32 MHz clock |
| J3101 | 1-2 | In | Enable 48 MHz clock |