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# NORTHGATE COMPUTER SYSTEMS, INC.
ELEGANCE PENTIUM 90
Processor Pentium
Processor 60/66/75/90/100MHz
Speed
Chip Set OPTI
Max. Onboard 128MB
DRAM
Cache 256/1024KB
BIOS AMI/Phoenix
Dimensions 330mm x 218mm
I/O Options 32-bit VESA local bus slots (2), 32-bit PCI bus
slots (3), floppy drive interface, IDE interfaces
(2), parallel port, PS/2 mouse port, serial ports
(2)
NPU Options None
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+------------------+-----------|
| Speaker | J5 | IDE interface | J26 |
|------------------+----------+------------------+-----------|
| Power LED & | J6 | Serial port 2 | J27 |
| keylock | | | |
|------------------+----------+------------------+-----------|
| Keyboard | J8 | Turbo LED | JP33 |
| connector | | | (pins 1 - |
| | | | 2) |
|------------------+----------+------------------+-----------|
| PS/2 mouse port | J9 | IDE interface | JP33 |
| | | LED | (pins 3 - |
| | | | 4) |
|------------------+----------+------------------+-----------|
| IDE interface | J22 | 32-bit PCI bus | PC1 - PC3 |
| | | slots | |
|------------------+----------+------------------+-----------|
| Serial port 1 | J23 | Reset switch | S1 |
|------------------+----------+------------------+-----------|
| Parallel port | J24 | 32-bit VESA | SL1 & SL2 |
| | | local bus slots | |
|------------------+----------+------------------+-----------|
| Floppy drive | J25 | | |
| interface | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|-------------------------------------+---------+------------|
| » | Factory configured - do not | JP1 | Open |
| | alter | | |
|---+---------------------------------+---------+------------|
| » | Factory configured - do not | JP2 | Open |
| | alter | | |
|---+---------------------------------+---------+------------|
| » | Factory configured - do not | JP3 | Open |
| | alter | | |
|---+---------------------------------+---------+------------|
| » | Factory configured - do not | JP4 | pins 2 & 3 |
| | alter | | closed |
|---+---------------------------------+---------+------------|
| » | Factory configured - do not | JP6 | Open |
| | alter | | |
|---+---------------------------------+---------+------------|
| » | Factory configured - do not | JP8 | Open |
| | alter | | |
|---+---------------------------------+---------+------------|
| » | Factory configured - do not | JP10 | pins 2 & 3 |
| | alter | | closed |
|---+---------------------------------+---------+------------|
| » | Factory configured - do not | JP13 | Open |
| | alter | | |
|---+---------------------------------+---------+------------|
| » | CMOS memory normal operation | JP14 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+---------+------------|
| | CMOS memory clear | JP14 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+---------+------------|
| » | Monitor type select color | JP15 | Closed |
|---+---------------------------------+---------+------------|
| | Monitor type select monochrome | JP15 | Open |
|---+---------------------------------+---------+------------|
| » | Factory configured - do not | JP16 | Open |
| | alter | | |
|---+---------------------------------+---------+------------|
| » | I/O recovery delay delay | JP19 | Closed |
| | enabled | | |
|---+---------------------------------+---------+------------|
| | I/O recovery delay delay | JP19 | Open |
| | disabled | | |
|---+---------------------------------+---------+------------|
| » | LDEV# timing select end of | JP20 | Open |
| | first T2 | | |
|---+---------------------------------+---------+------------|
| | LDEV# timing select end of | JP20 | Closed |
| | second T2 | | |
|---+---------------------------------+---------+------------|
| » | Factory configured - do not | JP21 | Open |
| | alter | | |
|---+---------------------------------+---------+------------|
| » | Factory configured - do not | JP22 | Open |
| | alter | | |
|---+---------------------------------+---------+------------|
| » | Main board select SQ545 | JP23 | Closed |
|---+---------------------------------+---------+------------|
| | Main board select SQ503 | JP23 | Open |
|---+---------------------------------+---------+------------|
| » | Factory configured - do not | JP26 | Closed |
| | alter | | |
|---+---------------------------------+---------+------------|
| » | Factory configured - do not | JP28 | Open |
| | alter | | |
|---+---------------------------------+---------+------------|
| » | Factory configured - do not | JP29 | pins 1 & 2 |
| | alter | | closed |
|---+---------------------------------+---------+------------|
| » | Factory configured - do not | JP30 | Closed |
| | alter | | |
|---+---------------------------------+---------+------------|
| » | Port 3F7 mode select VESA | JP31 | pins 8 & 9 |
| | | | closed |
|---+---------------------------------+---------+------------|
| | Port 3F7 mode select ISA | JP31 | pins 7 & 8 |
| | | | closed |
|---+---------------------------------+---------+------------|
| » | IDE port address select primary | JP31 | pins 10 & |
| | | | 11 closed |
|---+---------------------------------+---------+------------|
| | IDE port address select | JP31 | pins 11 & |
| | secondary | | 12 closed |
|---+---------------------------------+---------+------------|
| » | VESA IDE enabled | JP31 | pins 19 & |
| | | | 20 closed |
|---+---------------------------------+---------+------------|
| | VESA IDE disabled | JP31 | pins 20 & |
| | | | 21 closed |
|---+---------------------------------+---------+------------|
| » | Parallel port IRQ select IRQ7 | JP32 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+---------+------------|
| | Parallel port IRQ select IRQ5 | JP32 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+---------+------------|
| » | Flash EPROM select normal | W1 | pins 1 & 2 |
| | operation | | closed |
|---+---------------------------------+---------+------------|
| | Flash EPROM select flash | W1 | pins 2 & 3 |
| | programming | | closed |
|------------------------------------------------------------|
| Note: The location of the following jumpers are |
| unidentified: JP1, JP2, JP3, JP28, JP29, & JP30. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 2MB | (2) 256K x 36 | NONE |
|------------------+--------------------+--------------------|
| 4MB | (2) 256K x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 4MB | (2) 512K x 36 | NONE |
|------------------+--------------------+--------------------|
| 6MB | (2) 256K x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 8MB | (2) 512K x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 10MB | (2) 1M x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 12MB | (2) 1M x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 36 | NONE |
|------------------+--------------------+--------------------|
| 18MB | (2) 256K x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 20MB | (2) 512K x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 1M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4M x 36 | NONE |
|------------------+--------------------+--------------------|
| 34MB | (2) 256K x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 36MB | (2) 512K x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 40MB | (2) 1M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 2M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 36 | NONE |
|------------------+--------------------+--------------------|
| 66MB | (2) 256K x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 68MB | (2) 512K x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 72MB | (2) 1M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 80MB | (2) 2M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 4M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG |
|------------------+--------------------+--------------------|
| 256KB | (8) 32K x 8 | (1) 32K x 8 |
|------------------+--------------------+--------------------|
| 1MB | (8) 128K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP37 | JP38 |
|-------------------+--------------------+-------------------|
| 256KB | Open | Open |
|-------------------+--------------------+-------------------|
| 1MB | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP9 | JP11 | JP12 |
|---------------+--------------+--------------+--------------|
| 50MHz | Open | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 60MHz | Closed | Open | Closed |
|---------------+--------------+--------------+--------------|
| 66MHz | Open | Closed | Open |
|---------------+--------------+--------------+--------------|
| 75MHz | Open | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 90MHz | Closed | Open | Closed |
|---------------+--------------+--------------+--------------|
| 100MHz | Open | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA CLOCK SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP31 |
|----------------------------+-------------------------------|
| » | 33MHz | pins 2 & 3, 4 & 5 closed |
|---+------------------------+-------------------------------|
| | 25MHz | pins 1 & 2, 4 & 5 closed |
|---+------------------------+-------------------------------|
| | 40MHz | pins 1 & 2, 5 & 6 closed |
|---+------------------------+-------------------------------|
| | 50MHz | pins 2 & 3, 5 & 6 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA CYCLE TIME CONFIGURATION |
|------------------------------------------------------------|
| Cycle time | JP31 |
|----------------------------+-------------------------------|
| » | > = 480ns | pins 14 & 15, 17 & 18 closed |
|---+------------------------+-------------------------------|
| | > = 200ns | pins 13 & 14, 16 & 17 closed |
|---+------------------------+-------------------------------|
| | > = 240ns | pins 14 & 15, 16 & 17 closed |
|---+------------------------+-------------------------------|
| | > = 383ns | pins 13 & 14, 17 & 18 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | JP25 |
|-------------------------------+----------------------------|
| <= 33MHz | Open |
|-------------------------------+----------------------------|
| > 33MHz | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| Setting | JP17 | JP18 |
|----------------------+------------------+------------------|
| » | LCLK/4 | Open | Closed |
|---+------------------+------------------+------------------|
| | LCLK/2 | Open | Open |
|---+------------------+------------------+------------------|
| | LCLK/3 | Closed | Open |
|---+------------------+------------------+------------------|
| | LCLK/5 | Closed | Closed |
+------------------------------------------------------------+