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# IBM CORPORATION
PC300 (TYPE 6588)
Device Type Mainboard
Processor Pentium II
Processor Speed 233/266/300MHz
Chip Set Unidentified
Video Chip Set Unidentified
Maximum Onboard 512MB (EDO supported)
Memory
Maximum Video Unidentified
Memory
Cache 256/512KB (located on Pentium II CPU)
BIOS Unidentified
Dimensions 330mm x 218mm
I/O Options Ethernet 10BaseT connector, floppy drive
interface, IDE interfaces (2), parallel port,
PS/2 mouse port, serial port, VGA feature
connector, VGA port, riser slot, IR
connector, USB connectors (2), line in, line
out, wavetable connector, audio in – CD-ROM
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| 5v auxiliary | C1 | Ethernet 10BaseT | CN2 |
| power | | connector | |
|-------------------+----------+------------------+----------|
| Telejack | C2 | USB connector 2 | CN3 |
| connector | | | |
|-------------------+----------+------------------+----------|
| Audio in - CD-ROM | C3 | USB connector 1 | CN4 |
|-------------------+----------+------------------+----------|
| Wavetable | C4 | Parallel port | CN5 |
| connector | | | |
|-------------------+----------+------------------+----------|
| 5v power | C5 | PS/2 mouse port | CN6 |
|-------------------+----------+------------------+----------|
| 3.3v auxiliary | C6 | Line out | CN7 |
| power | | | |
|-------------------+----------+------------------+----------|
| Power switch | C7 | Line in | CN8 |
| connector | | | |
|-------------------+----------+------------------+----------|
| Power LED/IDE | C8 | VGA feature | CN9 |
| interface LED | | connector | |
|-------------------+----------+------------------+----------|
| CPU fan power | C9 | Floppy drive | CN10 |
| | | interface | |
|-------------------+----------+------------------+----------|
| Chassis fan power | C10 | IDE interface 2 | CN11 |
|-------------------+----------+------------------+----------|
| SCSI interface | C11 | IDE interface 1 | CN12 |
| LED | | | |
|-------------------+----------+------------------+----------|
| Wake on LAN | C12 | IR connector | J3M1 |
| connector | | | |
|-------------------+----------+------------------+----------|
| Wake on modem | C13 | Serial port | J4M1 |
| connector | | | |
|-------------------+----------+------------------+----------|
| Chassis security | C14 | Riser slot | SL1 |
| connector | | | |
|-------------------+----------+------------------+----------|
| VGA port | CN1 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|---------------------------------------+-------+------------|
| » | Flash BIOS normal operation | J1 | Pins 5 & 6 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Flash BIOS recovery mode | J1 | Pins 4 & 5 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Floppy drive normal operation | J2 | Pins 5 & 6 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Floppy drive read only | J2 | Pins 4 & 5 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | J4 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | CMOS memory normal operation | J4 | Pins 5 & 6 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | CMOS memory clear | J4 | Pins 4 & 5 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Password normal operation | J5 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Password clear | J5 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Setup access normal operation | J5 | Pins 5 & 6 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Setup access disabled | J5 | Pins 4 & 5 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 8MB | (1) 1M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 16MB | (1) 2M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 16MB | (1) 1M x 64 | (1) 1M x 64 | None |
|------------+---------------+---------------+---------------|
| 24MB | (1) 2M x 64 | (1) 1M x 64 | None |
|------------+---------------+---------------+---------------|
| 24MB | (1) 1M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 32MB | (1) 4M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 32MB | (1) 2M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 32MB | (1) 2M x 64 | (1) 2M x 64 | None |
|------------+---------------+---------------+---------------|
| 32MB | (1) 1M x 64 | (1) 1M x 64 | (1) 1M x 64 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 40MB | (1) 4M x 64 | (1) 1M x 64 | None |
|------------+---------------+---------------+---------------|
| 40MB | (1) 2M x 64 | (1) 2M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 48MB | (1) 4M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 48MB | (1) 4M x 64 | (1) 2M x 64 | None |
|------------+---------------+---------------+---------------|
| 48MB | (1) 2M x 64 | (1) 2M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 56MB | (1) 4M x 64 | (1) 2M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 64MB | (1) 8M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 64MB | (1) 4M x 64 | (1) 4M x 64 | None |
|------------+---------------+---------------+---------------|
| 64MB | (1) 2M x 64 | (1) 2M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 72MB | (1) 8M x 64 | (1) 1M x 64 | None |
|------------+---------------+---------------+---------------|
| 72MB | (1) 4M x 64 | (1) 4M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 80MB | (1) 8M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 80MB | (1) 4M x 64 | (1) 4M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 88MB | (1) 8M x 64 | (1) 2M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 96MB | (1) 8M x 64 | (1) 2M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 96MB | (1) 4M x 64 | (1) 4M x 64 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 104MB | (1) 8M x 64 | (1) 4M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 112MB | (1) 8M x 64 | (1) 4M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 128MB | (1) 16M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 128MB | (1) 8M x 64 | (1) 4M x 64 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 128MB | (1) 8M x 64 | (1) 8M x 64 | None |
|------------+---------------+---------------+---------------|
| 144MB | (1) 16M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 144MB | (1) 16M x 64 | (1) 2M x 64 | None |
|------------+---------------+---------------+---------------|
| 144MB | (1) 8M x 64 | (1) 8M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 152MB | (1) 16M x 64 | (1) 2M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 160MB | (1) 16M x 64 | (1) 2M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 160MB | (1) 8M x 64 | (1) 8M x 64 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 168MB | (1) 16M x 64 | (1) 4M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 176MB | (1) 16M x 64 | (1) 4M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 192MB | (1) 16M x 64 | (1) 4M x 64 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 192MB | (1) 8M x 64 | (1) 8M x 64 | (1) 8M x 64 |
|------------+---------------+---------------+---------------|
| 200MB | (1) 16M x 64 | (1) 8M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 208MB | (1) 16M x 64 | (1) 8M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 224MB | (1) 16M x 64 | (1) 8M x 64 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 256MB | (1) 16M x 64 | (1) 8M x 64 | (1) 8M x 64 |
|------------+---------------+---------------+---------------|
| 384MB | (1) 16M x 64 | (1) 16M x 64 | (1) 16M x 64 |
|------------+---------------+---------------+---------------|
| 512MB | (1) 32M x 64 | (1) 32M x 64 | None |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Note: 256KB/512KB cache is located on the Pentium II CPU. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO MEMORY CONFIGURATION |
|------------------------------------------------------------|
| Note: The size and location of the video memory is |
| unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| CPU speed | Clock speed | Multiplier | J2 | J3 |
|-----------+-------------+------------+-------+-------------|
| 233MHz | 66MHz | 3.5x | 2 & 3 | 2 & 3, 5 & |
| | | | | 6 |
|-----------+-------------+------------+-------+-------------|
| 266MHz | 66MHz | 4x | 1 & 2 | 1 & 2, 4 & |
| | | | | 5 |
|-----------+-------------+------------+-------+-------------|
| 300MHz | 66MHz | 4.5x | 1 & 2 | 2 & 3, 4 & |
| | | | | 5 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+