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# IBM CORPORATION
APTIVA 2144 TYPE C-1, APTIVA 2168 TYPE C-1
Device Type Mainboard
Processor 80486SX/80486SX2/80487SX/ODP486/80486DX/80486DX2
Processor 25/33/50(internal)/66(internal)MHz
Speed
Chip Set Unidentified
Video Chip Unidentified
Set
Maximum 64MB
Onboard
Memory
Maximum Video 1MB
Memory
Cache None
BIOS Unidentified
Dimensions 330mm x 218mm
I/O Options Floppy drive interface, IDE interfaces (2),
parallel port, PS/2 mouse port, serial ports
(2), riser slot, VGA feature connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| PS/2 mouse port | J2 | VGA feature | J14 |
| | | connector | |
|------------------+----------+-------------------+----------|
| Serial port 1 | J3 | IDE interface LED | J26 |
|------------------+----------+-------------------+----------|
| Serial port 2 | J4 | Speaker | J27 |
|------------------+----------+-------------------+----------|
| Parallel port | J5 | Soft off power | J29 |
| | | supply | |
|------------------+----------+-------------------+----------|
| VGA port | J6 | Soft off power | J30 |
| | | supply | |
|------------------+----------+-------------------+----------|
| Floppy drive | J7 | Chassis fan power | J38 |
| interface | | | |
|------------------+----------+-------------------+----------|
| IDE interface 1 | J9 | Wake on modem | JP5 |
| | | connector | |
|------------------+----------+-------------------+----------|
| IDE interface 2 | J10 | Riser slot | SL1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|--------------------------------+-------+-------------------|
| » | On board video disabled | J15 | Pins 1 & 2 closed |
|---+----------------------------+-------+-------------------|
| | On board video enabled | J15 | Pins 2 & 3 closed |
|---+----------------------------+-------+-------------------|
| | Parity enabled | J50 | Pins 1 & 2 closed |
|---+----------------------------+-------+-------------------|
| | Parity disabled | J50 | Pins 2 & 3 closed |
|---+----------------------------+-------+-------------------|
| » | Password normal operation | JP14 | Pins 1 & 2 closed |
|---+----------------------------+-------+-------------------|
| | Password clear | JP14 | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1MB | (1) 256K x 36 | None |
|------------------+--------------------+--------------------|
| 2MB | (1) 512K x 36 | None |
|------------------+--------------------+--------------------|
| 2MB | (1) 256K x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 3MB | (1) 512K x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 4MB | (1) 1M x 36 | None |
|------------------+--------------------+--------------------|
| 4MB | (1) 512K x 36 | (1) 512K x 36 |
|------------------+--------------------+--------------------|
| 5MB | (1) 1M x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 6MB | (1) 512K x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 8MB | (1) 2M x 36 | None |
|------------------+--------------------+--------------------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 9MB | (1) 2M x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 10MB | (1) 2M x 36 | (1) 512K x 36 |
|------------------+--------------------+--------------------|
| 12MB | (1) 2M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 16MB | (1) 4M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (1) 2M x 36 | (1) 2M x 36 |
|------------------+--------------------+--------------------|
| 17MB | (1) 256K x 36 | (1) 4M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 18MB | (1) 512K x 36 | (1) 4M x 36 |
|------------------+--------------------+--------------------|
| 20MB | (1) 4M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (1) 4M x 36 | (1) 2M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (1) 8M x 36 | None |
|------------------+--------------------+--------------------|
| 32MB | (1) 4M x 36 | (1) 4M x 36 |
|------------------+--------------------+--------------------|
| 33MB | (1) 8M x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 34MB | (1) 8M x 36 | (1) 512K x 36 |
|------------------+--------------------+--------------------|
| 36MB | (1) 8M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 40MB | (1) 8M x 36 | (1) 2M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (1) 8M x 36 | (1) 4M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (1) 8M x 36 | (1) 8M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO MEMORY CONFIGURATION |
|------------------------------------------------------------|
| Note: Board is factory installed with either 512KB or 1MB |
| video memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| Speed | J37 |
|------------------------------+-----------------------------|
| 25MHz | Closed |
|------------------------------+-----------------------------|
| 33MHz | Open |
|------------------------------+-----------------------------|
| 50iMHz | Closed |
|------------------------------+-----------------------------|
| 66iMHz | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | J24 | J25 | J31 |
|-----------+-------------------+--------------+-------------|
| 80486SX | Pins 2 & 3 closed | Pins 2 & 3 | Pins 1 & 2 |
| | | closed | closed |
|-----------+-------------------+--------------+-------------|
| 80486SX | Pins 2 & 3 closed | Pins 1 & 2 | Pins 2 & 3 |
| | | closed | closed |
|-----------+-------------------+--------------+-------------|
| 80487SX | Pins 1 & 2 closed | Pins 1 & 2 | Pins 2 & 3 |
| | | closed | closed |
|-----------+-------------------+--------------+-------------|
| ODP486 | Pins 1 & 2 closed | Pins 1 & 2 | Pins 2 & 3 |
| | | closed | closed |
|-----------+-------------------+--------------+-------------|
| 80486DX | Pins 2 & 3 closed | Pins 1 & 2 | Pins 2 & 3 |
| | | closed | closed |
|-----------+-------------------+--------------+-------------|
| 80486DX2 | Pins 2 & 3 closed | Pins 1 & 2 | Pins 2 & 3 |
| | | closed | closed |
|------------------------------------------------------------|
| Note: The settings for the 80486SX2 are unidentified. |
+------------------------------------------------------------+