PI1 Motherboard Settings and Configuration
ACER, INC.
PI1
Processor | CX M1/Pentium |
Processor Speed | 75/90/100MHz |
Chip Set | Unidentified |
Video Chip Set | Cirrus Logic |
Maximum Onboard Memory | 128MB |
Maximum Video Memory | 2MB |
Cache | 256KB |
BIOS | Unidentified |
Dimensions | 330mm x 218mm |
I/O Options | Floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), feature connector, VGA port, riser slot |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Feature connector | CN1 | IDE interface 1 | CN9 |
PS/2 mouse port | CN2 | Front panel LEDs | J1 |
Serial port 1 | CN3 | Front panel LEDs | J2 |
Serial port 2 | CN4 | IDE interface LED | J3 |
Parallel port | CN5 | IDE interface LED | J4 |
VGA port | CN6 | Green PC connector/reset switch | JP15 |
Floppy drive interface | CN7 | Riser slot | SL1 |
IDE interface 2 | CN8 |
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USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
» | BIOS type select OEM BIOS installed | JP1 | Pins 2 & 3 closed |
| BIOS type select RESERVED BIOS | JP1 | Pins 1 & 2 closed |
» | Password disabled | JP2 | Pins 2 & 3 closed |
| Password enabled | JP2 | Pins 1 & 2 closed |
» | BIOS type select flash BIOS | JP3 | Pins 1 & 2 closed |
| BIOS type select EPROM | JP3 | Pins 2 & 3 closed |
» | On board SMC665 enabled | JP6 | Pins 2 & 3 closed |
| On board SMC665 disabled | JP6 | Pins 1 & 2 closed |
» | On board GD5434 enabled | JP7 | Pins 2 & 3 closed |
| On board GD5434 disabled | JP7 | Pins 1 & 2 closed |
» | IDE interface enabled | JP9 | Pins 2 & 3 closed |
| IDE interface disabled | JP9 | Pins 1 & 2 closed |
» | ADS# not delayed | JP11 | Pins 1 & 2 closed |
| ADS# delayed by one CPU clock | JP11 | Pins 2 & 3 closed |
» | Reset switch used as reset switch | JP15 | Pins 2 & 3 closed |
| Reset switch used as green PC connector | JP15 | Pins 1 & 2 closed |
DRAM CONFIGURATION | ||
Size | Bank 0 | Bank 1 |
8MB | (2) 1M x 36 | None |
16MB | None | (2) 2M x 36 |
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 |
DRAM CONFIGURATION (CON'T) | ||
Size | Bank 0 | Bank 1 |
48MB | (2) 2M x 36 | (2) 4M x 36 |
64MB | (2) 8M x 36 | None |
64MB | (2) 4M x 36 | (2) 4M x 36 |
72MB | (2) 1M x 36 | (2) 8M x 36 |
80MB | (2) 8M x 36 | (2) 2M x 36 |
96MB | (2) 4M x 36 | (2) 8M x 36 |
128MB | (2) 8M x 36 | (2) 8M x 36 |
Note: Banks are interchangeable. | ||
CACHE CONFIGURATION |
Note: 256KB cache is factory installed and is not configurable. |
VIDEO MEMORY CONFIGURATION | ||
Size | Bank 0 | Bank 1 |
1MB | 1MB | None |
2MB | 1MB | (2) 256K x 16 |
Note: Bank 0 is factory installed and is not configurable. | ||
CPU SPEED SELECTION | ||
CPU speed | Clock speed | JP8 |
75MHz | 50MHz | Pins 1 & 4 closed |
90MHz | 60MHz | Pins 2 & 5 closed |
100MHz | 66MHz | Pins 3 & 6 closed |
CPU TYPE SELECTION | |
Type | JP12 |
Cyrix | Pins 2 & 3 closed |
Intel | Pins 1 & 2 closed |
CPU VOLTAGE SELECTION | |
Voltage | JP13 |
3.3825v | Pins 1 & 2 closed |
3.5250v | Pins 2 & 3 closed |
CPU CORE CLOCK RATIO SELECTION | |
Ratio | JP14 |
3/2 | Pins 1 & 2 closed |
2x | Pins 2 & 3 closed |
DMA CHANNEL SELECTION | |||
Channel | JP4 | JP5 | |
» | 1 | Pins 1 & 2 closed | Pins 1 & 2 closed |
| 3 | Pins 2 & 3 closed | Pins 2 & 3 closed |
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