ACER, INC.
ACERMATE 486/G (A1GX)
Device Type | Mainboard |
Processor | 80486/80486WB/CX486DX2/IBM486DX2/AM486DX2/AM486DX4/ P24T |
Processor Speed | 25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz |
Chip Set | ALI M1429 |
Video Chip Set | Cirrus Logic |
Maximum Onboard Memory | 36MB |
Maximum Video Memory | 2MB |
Cache | 128/256KB |
BIOS | Unidentified |
Dimensions | 285mm x 220mm |
I/O Options | Floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port, riser slot |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Chassis fan power | C1 | PS/2 mouse port | CN5 |
Feature connector | C2 | Floppy drive interface | CN6 |
VGA port | CN1 | IDE interface 2 | CN7 |
Parallel port | CN2 | IDE interface 1 | CN8 |
Serial port 2 | CN3 | VGA feature connector | CN9 |
Serial port 1 | CN4 | Riser slot | SL1 |
USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
» | Factory configured - do not alter | J1 | Unidentified |
» | Factory configured - do not alter | J2 | Unidentified |
» | Factory configured - do not alter | J3 | Unidentified |
» | BIOS type select Acer | JP1 | Pins 2 & 3 closed |
BIOS type select OEM | JP1 | Pins 1 & 2 closed | |
» | Password disabled | JP2 | Pins 2 & 3 closed |
Password enabled | JP2 | Pins 1 & 2 closed | |
» | Normal boot enabled | JP3 | Pins 2 & 3 closed |
COM1 boot enabled | JP3 | Pins 1 & 2 closed | |
» | On board I/O enabled | JP6 | Pins 2 & 3 closed |
On board I/O disabled | JP6 | Pins 1 & 2 closed | |
» | On board video enabled | JP9 | Pins 2 & 3 closed |
On board video disabled | JP9 | Pins 1 & 2 closed | |
» | IDE address select 074H, 078H, 07CH | JP10 | Pins 2 & 3 closed |
IDE address select 0F4H, 0F8H, 0FCH | JP10 | Pins 1 & 2 closed | |
» | Factory configured - do not alter | JP11 | Unidentified |
» | Factory configured - do not alter | JP12 | Unidentified |
» | Factory configured - do not alter | JP19 | Unidentified |
» | Reset button enabled | JP28 | Pins 2 & 3 closed |
Reset/green PC button enabled | JP28 | Pins 1 & 2 closed | |
» | IDE interface enabled | JP29 | Pins 2 & 3 closed |
IDE interface disabled | JP29 | Pins 1 & 2 closed | |
» | BIOS type select EPROM | JPX1 | Pins 2 & 3 closed |
BIOS type select flash | JPX1 | Pins 1 & 2 closed |
SIMM CONFIGURATION | |||
Size | Bank 0 | Bank 1 | Bank 2 |
4MB | 4MB | None | None |
4MB | None | (1) 1M x 36 | None |
8MB | 4MB | (1) 1M x 36 | None |
8MB | None | (1) 2M x 36 | None |
8MB | None | (1) 1M x 36 | (1) 1M x 36 |
12MB | 4MB | (1) 2M x 36 | None |
SIMM CONFIGURATION (CON’T) | |||
Size | Bank 0 | Bank 1 | Bank 2 |
12MB | 4MB | (1) 1M x 36 | (1) 1M x 36 |
12MB | None | (1) 1M x 36 | (1) 2M x 36 |
16MB | 4MB | (1) 2M x 36 | (1) 1M x 36 |
16MB | None | (1) 4M x 36 | None |
16MB | None | (1) 2M x 36 | (1) 2M x 36 |
20MB | 4MB | (1) 4M x 36 | None |
20MB | None | (1) 1M x 36 | (1) 4M x 36 |
24MB | 4MB | (1) 1M x 36 | (1) 4M x 36 |
24MB | None | (1) 2M x 36 | (1) 4M x 36 |
28MB | 4MB | (1) 2M x 36 | (1) 4M x 36 |
32MB | None | (1) 4M x 36 | (1) 4M x 36 |
36MB | 4MB | (1) 4M x 36 | (1) 4M x 36 |
SIMM JUMPER CONFIGURATION | |||
Size | JP4 | JP5 | |
» | On board 4MB enabled | Pins 1 & 2 closed | Pins 2 & 3 closed |
On board 8MB enabled | Pins 2 & 3 closed | Pins 1 & 2 closed | |
On board memory disabled | Pins 1 & 2 closed | Pins 1 & 2 closed |
CACHE CONFIGURATION | |||
Size | Bank 0 | Bank 1 | TAG |
128KB | (4) 32K x 8 | None | (1) 32K x 8 |
256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
CACHE JUMPER CONFIGURATION | ||
Size | JP30 | JP31 |
128KB | Pins 1 & 2 closed | Pins 1 & 2 closed |
256KB | Pins 2 & 3 closed | Pins 2 & 3 closed |
VIDEO MEMORY CONFIGURATION | |||
Size | Bank 0 | Bank 1 | Bank 2 |
512KB | (1) 256K x 16 | None | None |
1MB | (1) 256K x 16 | (1) 256K x 16 | None |
2MB | (1) 256K x 16 | (1) 256K x 16 | (2) 256K x 16 |
CPU TYPE SELECTION | |||||
Type | JP13 | JP14 | JP15 | JP17 | JP18 |
80486 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
80486WB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
CX486DX2 * | 2 & 3 | Open | 1 & 2 | 1 & 2 | 2 & 3 |
IBM486DX2 * | 2 & 3 | Open | 1 & 2 | 1 & 2 | 2 & 3 |
CX486DX2 | 2 & 3 | Open | 1 & 2 | 1 & 2 | 2 & 3 |
IBM486DX2 | 2 & 3 | Open | 1 & 2 | 1 & 2 | 2 & 3 |
AM486DX2 | 2 & 3 | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 |
AM486DX2(WB) | 2 & 3 | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 |
AM 486DX4 | 2 & 3 | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 |
P24T | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
Note: Pins designated should be in the closed position. * = 3.3v, 3.45v CPU. |
CPU TYPE SELECTION (CON’T) | |||||
Type | JP19 | JP20 | JP21 | JP22 | JP23 |
80486 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
80486WB | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 |
CX486DX2 * | 2 & 3 | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 |
IBM486DX2 * | 2 & 3 | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 |
CX486DX2 | 2 & 3 | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 |
IBM486DX2 | 2 & 3 | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 |
AM486DX2 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
AM486DX2(WB) | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
AM 486DX4 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
P24T | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 |
Note: Pins designated should be in the closed position. * = 3.3v, 3.45v CPU. |
CPU TYPE SELECTION (CON’T) | ||||||
Type | JP25 | JP26 | JP27 | JP32 | JPX2 | JPX3 |
80486 | 2 & 3 | 2 & 3 | 3 & 4 | 1 & 2 | 2 & 3 | 2 & 3 |
80486WB | 2 & 3 | 1 & 2 | 3 & 4 | 1 & 2 | 2 & 3 | 2 & 3 |
CX486DX2 * | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 |
IBM486DX2 * | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 |
CX486DX2 | 1 & 2 | 2 & 3 | 3 & 4 | 1 & 2 | 2 & 3 | 2 & 3 |
IBM486DX2 | 1 & 2 | 2 & 3 | 3 & 4 | 1 & 2 | 2 & 3 | 2 & 3 |
AM486DX2 | 1 & 2 | 2 & 3 | 3 & 4 | 1 & 2 | 2 & 3 | 2 & 3 |
AM486DX2(WB) | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 |
AM 486DX4 | 1 & 2 | 2 & 3 | 3 & 4 | 1 & 2 | 2 & 3 | 2 & 3 |
P24T | 2 & 3 | 1 & 2 | 3 & 4 | 1 & 2 | 2 & 3 | 2 & 3 |
Note: Pins designated should be in the closed position. * = 3.3v, 3.45v CPU. |
DMA CHANNEL SELECTION | |||
Channel | JP7 | JP8 | |
1 | Pins 1 & 2 closed | Pins 1 & 2 closed | |
» | 3 | Pins 2 & 3 closed | Pins 2 & 3 closed |