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# GENOA SYSTEMS CORPORATION
TURBOEXPRESS 486PCI
Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2/Pentium
Overdrive
Processor 25/33/50(internal)/66(internal)MHz
Speed
Chip Set Intel Saturn
Max. Onboard 128MB
DRAM
Cache 128/256/512KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options 32-bit PCI local bus slots (4)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------+----------+----------------------+----------|
| Power LED & | JP17 | 32-bit PCI Local bus | S1 |
| keylock | | slot | |
|---------------+----------+----------------------+----------|
| Speaker | JP18 | 32-bit PCI Local bus | S2 |
| | | slot | |
|---------------+----------+----------------------+----------|
| Reset switch | JP19 | 32-bit PCI Local bus | S3 |
| | | slot | |
|---------------+----------+----------------------+----------|
| Turbo LED | JP20 | 32-bit PCI Local bus | S4 |
| | | slot | |
|---------------+----------+----------------------+----------|
| Turbo switch | JP21 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|----------------------------+-----------+-------------------|
| » | Cache enabled | JP4 | pins 2 & 3 closed |
|---+------------------------+-----------+-------------------|
| | Cache disabled | JP4 | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 2MB | (1) 1M x 36 | (1) 1M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 2M x 36 | (1) 2M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 1M x 36 | (1) 1M x 36 | (1) 2M x | (1) 2M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 2M x 36 | (1) 2M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x | (1) 2M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 4M x 36 | (1) 4M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 10MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 10MB | (1) 4M x 36 | (1) 4M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 12MB | (1) 2M x 36 | (1) 2M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 12MB | (1) 4M x 36 | (1) 4M x 36 | (1) 2M x | (1) 2M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 8M x 36 | (1) 8M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 18MB | (1) 1M x 36 | (1) 1M x 36 | (1) 8M x | (1) 8M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 18MB | (1) 8M x 36 | (1) 8M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 20MB | (1) 2M x 36 | (1) 2M x 36 | (1) 8M x | (1) 8M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 20MB | (1) 8M x 36 | (1) 8M x 36 | (1) 2M x | (1) 2M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 4M x 36 | (1) 4M x 36 | (1) 8M x | (1) 8M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 8M x 36 | (1) 8M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 8M x 36 | (1) 8M x 36 | (1) 8M x | (1) 8M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 16M x | (1) 16M x | NONE | NONE |
| | 36 | 36 | | |
|------+-------------+-------------+------------+------------|
| 34MB | (1) 1M x 36 | (1) 1M x 36 | (1) 16M x | (1) 16M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 34MB | (1) 16M x | (1) 16M x | (1) 1M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 36MB | (1) 16M x | (1) 16M x | (1) 2M x | (1) 2M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 36MB | (1) 2M x 36 | (1) 2M x 36 | (1) 16M x | (1) 16M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 40MB | (1) 4M x 36 | (1) 4M x 36 | (1) 16M x | (1) 16M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 40MB | (1) 16M x | (1) 16M x | (1) 4M x | (1) 4M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 48MB | (1) 8M x 36 | (1) 8M x 36 | (1) 16M x | (1) 16M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 48MB | (1) 16M x | (1) 16M x | (1) 8M x | (1) 8M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 64MB | (1) 16M x | (1) 16M x | (1) 16M x | (1) 16M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 64MB | (1) 32M x | (1) 32M x | NONE | NONE |
| | 36 | 36 | | |
|------+-------------+-------------+------------+------------|
| 66MB | (1) 1M x 36 | (1) 1M x 36 | (1) 32M x | (1) 32M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 66MB | (1) 32M x | (1) 32M x | (1) 1M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 68MB | (1) 2M x 36 | (1) 2M x 36 | (1) 32M x | (1) 32M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 68MB | (1) 32M x | (1) 32M x | (1) 2M x | (1) 2M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 72MB | (1) 4M x 36 | (1) 4M x 36 | (1) 32M x | (1) 32M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 72MB | (1) 32M x | (1) 32M x | (1) 4M x | (1) 4M x |
| | 36 | 36 | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CONT.) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 80MB | (1) 8M x 36 | (1) 8M x | (1) 32M x | (1) 32M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 80MB | (1) 32M x | (1) 32M x | (1) 8M x | (1) 8M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 96MB | (1) 16M x | (1) 16M x | (1) 32M x | (1) 32M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 96MB | (1) 32M x | (1) 32M x | (1) 16M x | (1) 16M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 128MB | (1) 32M x | (1) 32M x | (1) 32M x | (1) 32M x |
| | 36 | 36 | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
|------------+---------------+---------------+---------------|
| 512KB | (4) 128K x 8 | NONE | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP2 | JP3 | JP12 | JP13 |
|-------+-----------------+----------------+--------+--------|
| 128KB | pins 1 & 2 | pins 2 & 3 | Open | Open |
| | closed | closed | | |
|-------+-----------------+----------------+--------+--------|
| 256KB | pins 2 & 3 | pins 1 & 2 | Closed | Open |
| | closed | closed | | |
|-------+-----------------+----------------+--------+--------|
| 512KB | pins 2 & 3 | pins 2 & 3 | Closed | Closed |
| | closed | closed | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP14 | JP15 | JP16 |
|---------------+--------------+--------------+--------------|
| 80486SX | pins 1 & 2 | Open | pins 2 & 3 |
| | closed | | closed |
|---------------+--------------+--------------+--------------|
| 80487SX | pins 1 & 2 | pins 2 & 3 | Closed |
| | closed | closed | |
|---------------+--------------+--------------+--------------|
| 80486DX | pins 1 & 2 | pins 1 & 2 | Closed |
| | closed | closed | |
|---------------+--------------+--------------+--------------|
| ODP486SX | pins 1 & 2 | pins 2 & 3 | Closed |
| | closed | closed | |
|---------------+--------------+--------------+--------------|
| 80486DX2 | pins 1 & 2 | pins 1 & 2 | Closed |
| | closed | closed | |
|---------------+--------------+--------------+--------------|
| Pentium | pins 2 & 3 | pins 2 & 3 | Closed |
| Overdrive | closed | closed | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP5 | JP10 | JP11 |
|--------------+-------------------+------------+------------|
| 25MHz | pins 1 & 2 closed | Open | Closed |
|--------------+-------------------+------------+------------|
| 33MHz | pins 2 & 3 closed | Closed | Open |
|--------------+-------------------+------------+------------|
| 50i MHz | pins 1 & 2 closed | Open | Closed |
|--------------+-------------------+------------+------------|
| 66i MHz | pins 2 & 3 closed | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PCI INTERRUPT SELECT |
|------------------------------------------------------------|
| Setting | JP22 | JP23 | JP24 |
|---------------+----------------+-------------+-------------|
| » | IRQ15 | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 |
| | | closed | closed | closed |
|-----+---------+----------------+-------------+-------------|
| | IRQ11 | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 |
| | | closed | closed | closed |
|-----+---------+----------------+-------------+-------------|
| | IRQ5 | pins 1 & 2 | pins 1 & 2 | pins 2 & 3 |
| | | closed | closed | closed |
|-----+---------+----------------+-------------+-------------|
| | None | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | | closed | closed | closed |
|------------------------------------------------------------|
| Note:There are three jumpers to be set for the PCI |
| interrupt connection. When you connect an ISA IRQ to |
| the PCI bus, that IRQ is unavailable to the ISA bus. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PCI IDE IRQ14 CONNECTION |
|------------------------------------------------------------|
| Type | JP27 | JP28 |
|-------------------------------+-------------------+--------|
| ISA IDE controller | pins 3 & 4 closed | Closed |
|-------------------------------+-------------------+--------|
| PCI IDE controller (edge | pins 4 & 5 closed | Open |
| trigger) | | |
|-------------------------------+-------------------+--------|
| PCI IDE controller (level | pins 1 & 2 closed | Open |
| trigger) | | |
+------------------------------------------------------------+