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# EVEREX SYSTEMS, INC.
TEMPO 486-25/33/50 EV-18173
Processor 80486SX/80487SX/80486DX
Processor 25/33/50MHZ
Speed
Chip Set C & T/Suntac
Max. onboard 32MB
DRAM
SRAM Cache 32/64KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options Floppy drive interface, front panel connector,
IDE interface
parallel port, serial ports (2)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------------+----------+---------------+----------|
| Parallel Port | CN1 | Reset switch | J1 |
|----------------------+----------+---------------+----------|
| Serial Port (COM1) | CN2 | Speaker | J3 |
|----------------------+----------+---------------+----------|
| Serial Port (COM2) | CN3 | Front panel | J10 |
| | | connector | |
|----------------------+----------+---------------+----------|
| IDE interface | CN4 | IDE interface | J13 |
| | | LED | |
|----------------------+----------+---------------+----------|
| Floppy drive | CN5 | Unknown | J18 |
| interface | | | |
|------------------------------------------------------------|
| Note:The location of J1 is unknown. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|---------------------------------+---------------+----------|
| » | Factory configured - do not | JP1 | Unknown |
| | alter | | |
|---+-----------------------------+---------------+----------|
| » | Factory configured - do not | JP2 | Unknown |
| | alter | | |
|---+-----------------------------+---------------+----------|
| » | Factory configured - do not | JP3 | Unknown |
| | alter | | |
|---+-----------------------------+---------------+----------|
| » | Factory configured - do not | JP4 | Unknown |
| | alter | | |
|---+-----------------------------+---------------+----------|
| » | I/O bus speed select 1 wait | JP5 | Open |
| | state | | |
|---+-----------------------------+---------------+----------|
| | I/O bus speed select 0 wait | JP5 | Closed |
| | states | | |
|---+-----------------------------+---------------+----------|
| » | CMOS memory normal | JP8 | Unknown |
| | operation | | |
|---+-----------------------------+---------------+----------|
| | CMOS memory clear | JP11 | Unknown |
|---+-----------------------------+---------------+----------|
| » | Factory configured - do not | JP11 | Unknown |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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) 1M x 9 | (4) 256K x 9 |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 17MB | (4) 4M x 9 | (4) 256K x 9 |
|------------------+--------------------+--------------------|
| 20MB | (4) 1M x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Cache | TAG | Dirty Bit (DB) |
|-----------+---------------+---------------+----------------|
| 32KB | (4) 8K x 8 | (1) 8K x 8 | (1) 16K x 1 |
|-----------+---------------+---------------+----------------|
| 64KB | (4) 16K x 8 | (1) 16K x 8 | (1) 16K x 1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COM1 DTE/DCE CONFIGURATION |
|------------------------------------------------------------|
| Mode | Jumper Block COM1 |
|----------------------------+-------------------------------|
IMG IMG 2
| DCE | |
|----------------------------+-------------------------------|
IMG IMG 3
| DTE | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COM2 DTE/DCE CONFIGURATION |
|------------------------------------------------------------|
| Mode | Jumper Block COM2 |
|----------------------------+-------------------------------|
IMG IMG 4
| DCE | |
|----------------------------+-------------------------------|
IMG IMG 5
| DTE | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE RESISTOR CONFIGURATION |
|------------------------------------------------------------|
| Size | TR1 | TR2 |
|------------------+--------------------+--------------------|
| 32KB | Not Installed | Installed |
|------------------+--------------------+--------------------|
| 64KB | Installed | Not Installed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| TYPE | JP7 | JP9 |
|--------------------+--------------------+------------------|
| 80486SX | Pins 2 & 3 closed | Open |
|--------------------+--------------------+------------------|
| 80487SX | Pins 2 & 3 closed | Open |
|--------------------+--------------------+------------------|
| 80486DX | Pins 1 & 2 closed | Closed |
+------------------------------------------------------------+