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# ACER, INC.
V12LC-1
Device Type Mainboard
Processor Pentium
Processor Speed 75/90/100MHz
Chip Set Unidentified
Video Chip Set Cirrus Logic
Maximum Onboard 128MB
Memory
Maximum Video 2MB
Memory
Cache 256KB
BIOS Unidentified
Dimensions 330mm x 218mm
I/O Options bus mouse port, Ethernet 10BaseT connector,
(backplane) floppy drive interface, green PC connector,
IDE interfaces (2), parallel port, PS/2 mouse
interface, PS/2 keyboard interface, serial
ports (2), VGA feature connector, VGA port,
riser slot
IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------+----------+--------------------+----------|
| RJ-45 ethernet | CN1 | Network/multimedia | CN11 |
| port | | interface | |
|-----------------+----------+--------------------+----------|
| PS/2 mouse port | CN3 | CPU fan connector | CN12 |
|-----------------+----------+--------------------+----------|
| Serial port 1 | CN4 | Hard disk LED | CN13 |
| | | connector | |
|-----------------+----------+--------------------+----------|
| Serial port 2 | CN5 | Hard disk LED | CN14 |
| | | connector | |
|-----------------+----------+--------------------+----------|
| Parallel port | CN6 | LED connector | CN15 |
|-----------------+----------+--------------------+----------|
| VGA port | CN7 | LED connector | CN16 |
|-----------------+----------+--------------------+----------|
| Floppy drive | CN8 | VGA feature | CN17 |
| interface | | connector | |
|-----------------+----------+--------------------+----------|
| IDE interface 2 | CN9 | Riser slot | SL1 |
|-----------------+----------+--------------------+----------|
| IDE interface 1 | CN10 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|--------------------------------+-------+-------------------|
| » | BIOS type select Acer | JP1 | Pins 1 & 2 closed |
|---+----------------------------+-------+-------------------|
| | BIOS type select OEM | JP1 | Pins 2 & 3 closed |
|---+----------------------------+-------+-------------------|
| » | Password disabled | JP2 | Pins 2 & 3 closed |
|---+----------------------------+-------+-------------------|
| | Password enabled | JP2 | Pins 1 & 2 closed |
|---+----------------------------+-------+-------------------|
| » | BIOS ROM type select flash | JP3 | Pins 1 & 2 closed |
| | ROM | | |
|---+----------------------------+-------+-------------------|
| | BIOS ROM type select EPROM | JP3 | Pins 2 & 3 closed |
|---+----------------------------+-------+-------------------|
| » | Onboard SMC665 enabled | JP6 | Pins 2 & 3 closed |
|---+----------------------------+-------+-------------------|
| | Onboard SMC665 disabled | JP6 | Pins 1 & 2 closed |
|---+----------------------------+-------+-------------------|
| » | Onboard GD543x enabled | JP7 | Pins 2 & 3 closed |
|---+----------------------------+-------+-------------------|
| | Onboard GD543x disabled | JP7 | Pins 1 & 2 closed |
|---+----------------------------+-------+-------------------|
| » | Enhanced IDE enabled | JP9 | Pins 2 & 3 closed |
|---+----------------------------+-------+-------------------|
| | Enhanced IDE disabled | JP9 | Pins 1 & 2 closed |
|---+----------------------------+-------+-------------------|
| » | M1451 delay disabled | JP11 | Pins 1 & 2 closed |
|---+----------------------------+-------+-------------------|
| | M1451 delay enabled | JP11 | Pins 2 & 3 closed |
|---+----------------------------+-------+-------------------|
| » | Reset function enabled | JP15 | Pins 2 & 3 closed |
|---+----------------------------+-------+-------------------|
| | SMM function enabled | JP15 | Pins 1 & 2 closed |
|---+----------------------------+-------+-------------------|
| » | Factory configured - do | JP16 | Reserved |
| | not alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|-----------------+-------------------+----------------------|
| 8MB | (2) 1M x 36 | None |
|-----------------+-------------------+----------------------|
| 16MB | (2) 2M x 36 | None |
|-----------------+-------------------+----------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|-----------------+-------------------+----------------------|
| 24MB | (2) 2M x 36 | (2) 1M x 36 |
|-----------------+-------------------+----------------------|
| 32MB | (2) 4M x 36 | None |
|-----------------+-------------------+----------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|-----------------+-------------------+----------------------|
| 40MB | (2) 4M x 36 | (2) 1M x 36 |
|-----------------+-------------------+----------------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 |
|-----------------+-------------------+----------------------|
| 64MB | (2) 8M x 36 | None |
|-----------------+-------------------+----------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|-----------------+-------------------+----------------------|
| 72MB | (2) 8M x 36 | (2) 1M x 36 |
|-----------------+-------------------+----------------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 |
|-----------------+-------------------+----------------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 |
|-----------------+-------------------+----------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
+------------------------------------------------------------+
+------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------|
| Note: The cache configuration is unidentified. |
+------------------------------------------------+
+------------------------------------------------------------+
| VIDEO MEMORY CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1MB | (2) 256K x 16 | None |
|------------------+--------------------+--------------------|
| 2MB | (2) 256K x 16 | (2) 256K x 16 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT DMA SELECTION |
|------------------------------------------------------------|
| Setting | JP4 | JP5 |
|------------------+--------------------+--------------------|
| » DMA1 | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| DMA3 | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| Speed | JP8 |
|----------------------------+-------------------------------|
| 75MHz | Pins 1 & 4 closed |
|----------------------------+-------------------------------|
| 90MHz | Pins 2 & 5 closed |
|----------------------------+-------------------------------|
| 100MHz | Pins 3 & 6 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | JP12 |
|----------------------------+-------------------------------|
| » Intel | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| Cyrix M1 | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU MULTIPLIER SELECTION |
|------------------------------------------------------------|
| Multiplier | JP14 |
|----------------------------+-------------------------------|
| » 1.5x | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 2x | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP13 |
|----------------------------+-------------------------------|
| » 3.3825v | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 3.5250v | Pins 2 & 3 closed |
+------------------------------------------------------------+
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