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# IBM CORPORATION
APTIVA 2156 SL-A
Device Type Mainboard
Processor Pentium MMX
Processor Speed 300MHz
Chip Set Unidentified
Video Chip Set SIS
Maximum Onboard 256MB (SDRAM supported)
Memory
Maximum Video Unidentified
Memory
Cache 512KB
BIOS Unidentified
Dimensions 355mm x 304mm
I/O Options Floppy drive interface, game interface, IDE
interfaces (2), parallel port, PS/2 mouse
port, serial ports (2), VGA port, riser slot,
USB connector, ATX power connector, line in,
line out, microphone in, audio in – CD-ROM
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-----------------+------------|
| ATX power | ATX | Audio in – | J18 |
| connector | | CD-ROM | |
|------------------+----------+-----------------+------------|
| USB connector | J1 | Line out | J19 |
|------------------+----------+-----------------+------------|
| VGA port | J4 | Line in | J20 |
|------------------+----------+-----------------+------------|
| Buzzer | J5 | Microphone in | J21 |
|------------------+----------+-----------------+------------|
| IDE interface 1 | J6 | Game interface | J22 |
|------------------+----------+-----------------+------------|
| IDE interface 2 | J7 | Speaker | J23 |
|------------------+----------+-----------------+------------|
| Parallel port | J9 | Speaker | J25 |
|------------------+----------+-----------------+------------|
| PS/2 mouse port | J11 | Soft off power | JP7/pins 1 |
| | | supply | & 3 |
|------------------+----------+-----------------+------------|
| Serial port 1 | J12 | ACP LED | JP7/pins |
| | | | 2/4/6 |
|------------------+----------+-----------------+------------|
| Floppy drive | J14 | IDE interface | JP7/pins 5 |
| interface | | LED | & 7 |
|------------------+----------+-----------------+------------|
| Chassis fan | J17 | Riser slot | SL1 |
| power | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|----------------------------------+-------+-----------------|
| » | CMOS memory normal operation | JP3 | Pins 1 & 2 |
| | | | closed |
|---+------------------------------+-------+-----------------|
| | CMOS memory clear | JP3 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | (1) 1M x 64 | None |
|------------------+--------------------+--------------------|
| 16MB | (1) 2M x 64 | None |
|------------------+--------------------+--------------------|
| 16MB | (1) 1M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 24MB | (1) 2M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 32MB | (1) 4M x 64 | None |
|------------------+--------------------+--------------------|
| 32MB | (1) 2M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 40MB | (1) 4M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 48MB | (1) 4M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 64MB | (1) 8M x 64 | None |
|------------------+--------------------+--------------------|
| 64MB | (1) 4M x 64 | (1) 4M x 64 |
|------------------+--------------------+--------------------|
| 72MB | (1) 8M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 80MB | (1) 8M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 96MB | (1) 8M x 64 | (1) 4M x 64 |
|------------------+--------------------+--------------------|
| 128MB | (1) 16M x 64 | None |
|------------------+--------------------+--------------------|
| 128MB | (1) 8M x 64 | (1) 8M x 64 |
|------------------+--------------------+--------------------|
| 136MB | (1) 16M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 144MB | (1) 16M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 160MB | (1) 16M x 64 | (1) 4M x 64 |
|------------------+--------------------+--------------------|
| 192MB | (1) 16M x 64 | (1) 8M x 64 |
|------------------+--------------------+--------------------|
| 256MB | (1) 16M x 64 | (1) 16M x 64 |
|------------------------------------------------------------|
| Note: Board accepts SDRAM memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 |
|----------------------------+-------------------------------|
| 512KB | (2) 64K x 32 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO MEMORY CONFIGURATION |
|------------------------------------------------------------|
| Note: The location of the video memory is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU BUS SPEED SELECTION |
|------------------------------------------------------------|
| Speed | JP6 |
|----------------------------+-------------------------------|
| 60MHz | Pins 1 & 3, 4 & 6 closed |
|----------------------------+-------------------------------|
| 66MHz | Pins 1 & 3, 2 & 4 closed |
|----------------------------+-------------------------------|
| 75MHz | Pins 2 & 4, 3 & 5 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU MULTIPLIER SELECTION |
|------------------------------------------------------------|
| Multiplier | JP1 | JP2 |
|-------------+-------------------+--------------------------|
| 2x | Pins 1 & 2 closed | Pins 1 & 3, 4 & 6 closed |
|-------------+-------------------+--------------------------|
| 2.5x | Pins 1 & 2 closed | Pins 1 & 3, 2 & 4 closed |
|-------------+-------------------+--------------------------|
| 3x | Pins 1 & 2 closed | Pins 2 & 4, 3 & 5 closed |
|-------------+-------------------+--------------------------|
| 3.5x | Pins 1 & 2 closed | Pins 3 & 5, 4 & 6 closed |
|-------------+-------------------+--------------------------|
| 4x | Pins 2 & 3 closed | Pins 1 & 3, 2 & 4 closed |
|-------------+-------------------+--------------------------|
| 4.5x | Pins 2 & 3 closed | Pins 1 & 3, 2 & 4 closed |
|-------------+-------------------+--------------------------|
| 5x | Pins 2 & 3 closed | Pins 2 & 4, 3 & 5 closed |
|-------------+-------------------+--------------------------|
| 5.5x | Pins 2 & 3 closed | Pins 3 & 5, 4 & 6 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP4 | JP5 |
|---------+-------------------------+------------------------|
| 1.94 | Pins 3 & 5, 4 & 6 | Pins 2 & 4, 3 & 5 |
| | closed | closed |
|---------+-------------------------+------------------------|
| 2.24 | Pins 2 & 4, 3 & 5 | Pins 1 & 3, 2 & 4 |
| | closed | closed |
|---------+-------------------------+------------------------|
| 2.84 | Pins 1 & 3, 2 & 4 | Pins 1 & 3, 2 & 4 |
| | closed | closed |
|---------+-------------------------+------------------------|
| 2.94 | Pins 1 & 3, 2 & 4 | Pins 1 & 3, 4 & 6 |
| | closed | closed |
|---------+-------------------------+------------------------|
| 3.24 | Pins 1 & 3, 2 & 4 | Pins 2 & 4, 3 & 5 |
| | closed | closed |
+------------------------------------------------------------+