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# NEC TECHNOLOGIES, INC.
POWERMATE 386SXMB
Processor 80386SX
Processor Speed 12/16MHz
Chip Set ETEQ
Max. Onboard DRAM 32MB
Cache 16/32KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options Proprietary external memory card slot
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------+----------+------------------------+----------|
| Speaker | JP8 | Proprietary external | S2 |
| | | memory card | |
|-------------+----------+------------------------+----------|
| External | JP10 | Reset switch | SW1 |
| battery | | | |
|-------------+----------+------------------------+----------|
| Power LED & | JP11 | | |
| keylock | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|-------------------------------+---------------+------------|
| » | Monitor type select color | JP1 | closed |
|---+---------------------------+---------------+------------|
| | Monitor type select | JP1 | open |
| | monochrome | | |
|---+---------------------------+---------------+------------|
| » | Auxiliary Reference Burst | JP7 | pins 1 & 2 |
| | enabled | | closed |
|---+---------------------------+---------------+------------|
| | Auxiliary Reference Burst | JP7 | pins 2 & 3 |
| | disabled | | closed |
|---+---------------------------+---------------+------------|
| | Battery select internal | JP9 | pins 1 & 2 |
| | | | closed |
|---+---------------------------+---------------+------------|
| | Battery select external | JP9 | pins 2 & 3 |
| | | | closed |
|---+---------------------------+---------------+------------|
| » | Proprietary system logic | JP31 | closed |
| | enabled | | |
|---+---------------------------+---------------+------------|
| » | Proprietary system logic | JP31 | closed |
| | enabled | | |
|---+---------------------------+---------------+------------|
| » | Main Reference Burst | JP45 | pins 1 & 2 |
| | enabled | | closed |
|---+---------------------------+---------------+------------|
| | Main Reference Burst | JP45 | pins 3 & 4 |
| | disabled | | closed |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | JP48 | open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | S1/switch 1 | open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | S1/switch 2 | open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Redundancy circuit | S1/switch 3 | closed |
| | duplication enabled | | |
|---+---------------------------+---------------+------------|
| | Redundancy circuit | S1/switch 3 | open |
| | duplication disabled | | |
|---+---------------------------+---------------+------------|
| » | Cache tag bit size select | S1/switch 4 | open |
| | 16-bit | | |
|---+---------------------------+---------------+------------|
| | Cache tag bit size select | S1/switch 4 | closed |
| | 32-bit | | |
|---+---------------------------+---------------+------------|
| » | Board power select Direct | S1/switch 5 | open |
| | Current | | |
|---+---------------------------+---------------+------------|
| | Board power select | S1/switch 5 | closed |
| | Alternating Current | | |
| | (onboard converter) | | |
|---+---------------------------+---------------+------------|
| » | Flash ROM programming | S1/switch 6 | open |
| | disabled | | |
|---+---------------------------+---------------+------------|
| | Flash ROM programming | S1/switch 6 | closed |
| | enabled | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | J1 | open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | J2 | open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | J3 | open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | J4 | open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | J5 | open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | J7 | open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | J10 | open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | J23 | open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | J68 | open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | J101 | open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | J102 | open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | J103 | open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | J206 | open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | J207 | open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | J208 | open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | J209 | open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | J212 | open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | J213 | open |
| | not alter | | |
|------------------------------------------------------------|
| Note:Locations of jumpers J1 - J213 are unknown. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|--------------+----------------------+----------------------|
| 1MB | (4) 256K x 9 | NONE |
|--------------+----------------------+----------------------|
| 2MB | (4) 256K x 9 | (4) 256K x 9 |
|--------------+----------------------+----------------------|
| 4MB | (4) 1M x 9 | NONE |
|--------------+----------------------+----------------------|
| 5MB | (4) 256K x 9 | (4) 1 M x 9 |
|--------------+----------------------+----------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|--------------+----------------------+----------------------|
| 16MB | (4) 4M x 9 | NONE |
|--------------+----------------------+----------------------|
| 17MB | (4) 256K x 9 | (4) 4M x 9 |
|--------------+----------------------+----------------------|
| 20MB | (4) 1M x 9 | (4) 4M x 9 |
|--------------+----------------------+----------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Cache SRAM | TAG |
|------------------+--------------------+--------------------|
| 16KB | (4) 8K x 4 | (1) 2K x 2 |
|------------------+--------------------+--------------------|
| 32KB | (8) 8K x 4 | (1) 2K x 2 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Jumper | JP4 | JP5 | JP6 | JP20 | JP21 |
|--------+--------+------------+-----------+--------+--------|
| 16KB | Closed | pins 1 & 2 | pins 2 & | Open | Closed |
| | | closed | 3 closed | | |
|--------+--------+------------+-----------+--------+--------|
| 32KB | Open | pins 2 & 3 | pins 1 & | Closed | Open |
| | | closed | 2 closed | | |
+------------------------------------------------------------+