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# NIAGARA SMD TECHNOLOGY, INC.
NT924 REV-PB CACHE
Processor CX M1/AM K5/IBM/SGS/Thompson/Pentium
Processor Speed 75/90/100/120/133/150/166/180/200MHz
Chip Set Intel
Maximum Onboard 128MB
Memory
Cache 256/512KB
BIOS Award/Phoenix
Dimensions 330mm x 218mm
I/O Options 32-bit PCI slots (4), floppy drive interface,
green PC connector, IDE interfaces (2),
parallel port, PS/2 mouse interface, serial
ports (2), cache slot
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|----------------------+-------+--------------------+--------|
| IDE interface 1 | IDE1 | IDE interface LED | J13 |
|----------------------+-------+--------------------+--------|
| IDE interface 2 | IDE2 | Green PC LED | J14 |
|----------------------+-------+--------------------+--------|
| PS/2 mouse interface | J3 | Turbo LED | J15 |
|----------------------+-------+--------------------+--------|
| Serial port 1 | J4 | Reset switch | J16 |
|----------------------+-------+--------------------+--------|
| Serial port 2 | J6 | Speaker | J17 |
|----------------------+-------+--------------------+--------|
| Floppy drive | J7 | Power LED & | J18 |
| interface | | keylock | |
|----------------------+-------+--------------------+--------|
| Parallel port | J8 | 32-bit PCI slots | PC1 - |
| | | | PC4 |
|----------------------+-------+--------------------+--------|
| chassis fan power | J9 | Cache slot | SL1 |
|----------------------+-------+--------------------+--------|
| Green PC connector | J12 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|---------------------------------------+-------+------------|
| | Jumper information unavailable | JP2 | N/A |
|---+-----------------------------------+-------+------------|
| | Keyboard clock select depends on | JP4 | Pins 1 & 2 |
| | ISA clock | | closed |
|---+-----------------------------------+-------+------------|
| | Keyboard clock select set at | JP4 | Pins 2 & 3 |
| | 12MHz | | closed |
|---+-----------------------------------+-------+------------|
| | Jumper information unavailable | JP6 | N/A |
|---+-----------------------------------+-------+------------|
| ยป | Flash BIOS voltage select 5v | JP7 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Flash BIOS voltage select 12v | JP7 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 32 | None |
|------------------+--------------------+--------------------|
| 8MB | (2) 512K x 32 | (2) 512K x 32 |
|------------------+--------------------+--------------------|
| 10MB | (2) 1M x 32 | (2) 256K x 32 |
|------------------+--------------------+--------------------|
| 10MB | (2) 256K x 32 | (2) 1M x 32 |
|------------------+--------------------+--------------------|
| 12MB | (2) 1M x 32 | (2) 512K x 32 |
|------------------+--------------------+--------------------|
| 12MB | (2) 512K x 32 | (2) 1M x 32 |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 32 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 32 | (2) 1M x 32 |
|------------------+--------------------+--------------------|
| 18MB | (2) 2M x 32 | (2) 256K x 32 |
|------------------+--------------------+--------------------|
| 18MB | (2) 256K x 32 | (2) 2M x 32 |
|------------------+--------------------+--------------------|
| 20MB | (2) 2M x 32 | (2) 512K x 32 |
|------------------+--------------------+--------------------|
| 20MB | (2) 512K x 32 | (2) 2M x 32 |
|------------------+--------------------+--------------------|
| 24MB | (2) 2M x 32 | (2) 1M x 32 |
|------------------+--------------------+--------------------|
| 24MB | (2) 1M x 32 | (2) 2M x 32 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4M x 32 | None |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 32 | (2) 2M x 32 |
|------------------+--------------------+--------------------|
| 34MB | (2) 4M x 32 | (2) 256K x 32 |
|------------------+--------------------+--------------------|
| 34MB | (2) 256K x 32 | (2) 4M x 32 |
|------------------+--------------------+--------------------|
| 36MB | (2) 4M x 32 | (2) 512K x 32 |
|------------------+--------------------+--------------------|
| 36MB | (2) 512K x 32 | (2) 4M x 32 |
|------------------+--------------------+--------------------|
| 40MB | (2) 4M x 32 | (2) 1M x 32 |
|------------------+--------------------+--------------------|
| 40MB | (2) 1M x 32 | (2) 4M x 32 |
|------------------+--------------------+--------------------|
| 48MB | (2) 4M x 32 | (2) 2M x 32 |
|------------------+--------------------+--------------------|
| 48MB | (2) 2M x 32 | (2) 4M x 32 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 32 | None |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 32 | (2) 4M x 32 |
|------------------+--------------------+--------------------|
| 66MB | (2) 8M x 32 | (2) 256K x 32 |
|------------------+--------------------+--------------------|
| 66MB | (2) 256K x 32 | (2) 8M x 32 |
|------------------+--------------------+--------------------|
| 68MB | (2) 8M x 32 | (2) 512K x 32 |
|------------------+--------------------+--------------------|
| 68MB | (2) 512K x 32 | (2) 8M x 32 |
|------------------+--------------------+--------------------|
| 72MB | (2) 8M x 32 | (2) 1M x 32 |
|------------------+--------------------+--------------------|
| 72MB | (2) 1M x 32 | (2) 8M x 32 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|---------------+-----------------------+--------------------|
| 80MB | (2) 8M x 32 | (2) 2M x 32 |
|---------------+-----------------------+--------------------|
| 80MB | (2) 2M x 32 | (2) 8M x 32 |
|---------------+-----------------------+--------------------|
| 96MB | (2) 8M x 32 | (2) 4M x 32 |
|---------------+-----------------------+--------------------|
| 96MB | (2) 4M x 32 | (2) 8M x 32 |
|---------------+-----------------------+--------------------|
| 128MB | (2) 8M x 32 | (2) 8M x 32 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. Board also accepts x 36 |
| SIMMs. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE SIZE |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG | SL1 |
|-----------+--------+--------+-----------------+------------|
| 256KB (A) | 256KB | None | (1) 8K/16K x 8 | Not |
| | | | | installed |
|-----------+--------+--------+-----------------+------------|
| 256KB (B) | None | None | None | Installed |
|-----------+--------+--------+-----------------+------------|
| 512KB (A) | 256KB | 256KB | (1) 16K/32K x 8 | Not |
| | | | | installed |
|-----------+--------+--------+-----------------+------------|
| 512KB (B) | None | None | None | Installed |
|------------------------------------------------------------|
| Note: The orientation of banks 0 & 1 is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER |
|------------------------------------------------------------|
| Size | JP10 | JP11 |
|------------------+--------------------+--------------------|
| 256KB (A/B) | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 512KB (A/B) | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE |
|------------------------------------------------------------|
| Setting | JP8 |
|------------------------------------+-----------------------|
| CX M1 | Pins 1 & 2 closed |
|------------------------------------+-----------------------|
| AM K5 | Pins 1 & 2 closed |
|------------------------------------+-----------------------|
| P54C | Pins 1 & 2 closed |
|------------------------------------+-----------------------|
| P55C (reserved for future upgrade) | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED (INTEL) |
|------------------------------------------------------------|
| Setting | JP3 | JP12 | JP13 | JPS1 | JPS2 |
|----------+---------+---------+---------+---------+---------|
| 75MHz | 1 & 2 | 2 & 3 | 2 & 3 | Closed | Closed |
|----------+---------+---------+---------+---------+---------|
| 90MHz | 2 & 3 | 2 & 3 | 2 & 3 | Open | Open |
|----------+---------+---------+---------+---------+---------|
| 100MHz | 2 & 3 | 2 & 3 | 2 & 3 | Open | Closed |
|----------+---------+---------+---------+---------+---------|
| 120MHz | 2 & 3 | 2 & 3 | 1 & 2 | Closed | Open |
|----------+---------+---------+---------+---------+---------|
| 133MHz | 2 & 3 | 2 & 3 | 1 & 2 | Open | Closed |
|----------+---------+---------+---------+---------+---------|
| 150MHz | 2 & 3 | 1 & 2 | 1 & 2 | Closed | Open |
|----------+---------+---------+---------+---------+---------|
| 166MHz | 2 & 3 | 1 & 2 | 1 & 2 | Open | Closed |
|----------+---------+---------+---------+---------+---------|
| 180MHz | 2 & 3 | 1 & 2 | 2 & 3 | Closed | Open |
|----------+---------+---------+---------+---------+---------|
| 200MHz | 2 & 3 | 1 & 2 | 2 & 3 | Open | Closed |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED(CYRIX/IBM/SGS/THOMPSON) |
|------------------------------------------------------------|
| Setting | JP3 | JP12 | JP13 | JPS1 | JPS2 |
|----------+---------+---------+---------+---------+---------|
| 100MHz | 1 & 2 | 2 & 3 | 1 & 2 | Closed | Closed |
|----------+---------+---------+---------+---------+---------|
| 120MHz | 2 & 3 | 2 & 3 | 1 & 2 | Closed | Open |
|----------+---------+---------+---------+---------+---------|
| 133MHz | 1 & 2 | 2 & 3 | 1 & 2 | Open | Open |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+