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# JOY SYSTEMS, INC.
JOY 286-12
Processor 80286
Processor Speed 12MHz
Chip Set None
Max. Onboard DRAM 1MB
Cache None
BIOS AMI
Dimensions 330mm x 218mm
I/O Options None
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|--------------+-----------------------+----------+----------|
| Power LED | J1 pin 1 | Keylock | J1 pin 7 |
| (+5V) | | | |
|--------------+-----------------------+----------+----------|
| Slow LED | J1 pin 2 | VCC | J1 pin |
| (+5V) | | | 11 |
|--------------+-----------------------+----------+----------|
| Fast LED | J1 pin 3 | Speaker | J2 |
| (-5V) | | | |
|--------------+-----------------------+----------+----------|
| Reset switch | J1 pin 6 | External | J4 |
| | | battery | |
|--------------+-----------------------+----------+----------|
| GND | J1 pins 5, 8, 9, 15, | | |
| | & 16 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|-------------------------------+---------------+------------|
| » | Monitor type select | SW1/1 | Open |
| | monochrome | | |
|---+---------------------------+---------------+------------|
| | Monitor type select color | SW1/1 | Closed |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | W1 | N/A |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | 8-bit bus slot access 6 | W2 | pins 5 & 6 |
| | wait states | | closed |
|---+---------------------------+---------------+------------|
| | 8-bit bus slot access 5 | W2 | pins 3 & 4 |
| | wait states | | closed |
|---+---------------------------+---------------+------------|
| | 8-bit bus slot access 4 | W2 | pins 1 & 2 |
| | wait states | | closed |
|---+---------------------------+---------------+------------|
| » | 16-bit bus slot access 2 | W3 | pins 5 & 6 |
| | wait states | | closed |
|---+---------------------------+---------------+------------|
| | 16-bit bus slot access 1 | W3 | pins 7 & 8 |
| | wait states | | closed |
|---+---------------------------+---------------+------------|
| | 16-bit bus slot access 3 | W3 | pins 3 & 4 |
| | wait states | | closed |
|---+---------------------------+---------------+------------|
| | 16-bit bus slot access 4 | W3 | pins 1 & 2 |
| | wait states | | closed |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | W4 | N/A |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | W5 | N/A |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | W6 | pins 1 & 2 |
| | not alter | | open |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | W6 | pins 5 & 6 |
| | not alter | | open |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | W6 | pins 7 & 8 |
| | not alter | | closed |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | W7 | pins 2 & 3 |
| | not alter | | closed |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | W8 | pins 2 & 3 |
| | not alter | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 512KB | (2) 256K x 9 | NONE |
|------------------+--------------------+--------------------|
| 1MB | (2) 256K x 9 | (2) 256K x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | W6 |
|----------------------------+-------------------------------|
| 512KB | pins 3 & 4 closed |
|----------------------------+-------------------------------|
| 1MB | pins 3 & 4 open |
+------------------------------------------------------------+