AVT CORPORATION
GXM-3
| Device Type | Mainboard |
| Processor | CX 686MX |
| Processor Speed | 180/200/233/266/300MHz |
| Chip Set | Cyrix |
| Video Chip Set | XpressGRAPHICS |
| Audio Chip Set | XpressAUDIO |
| Maximum Onboard Memory | 256MB (SDRAM supported) |
| Maximum Video Memory | Unidentified |
| Cache | Unidentified |
| BIOS | Award |
| Dimensions | 220mm x 190mm |
| I/O Options | 16-bit ISA slots (2), 32-bit PCI slots (2), CD-ROM interface, floppy drive interface, game interface, IDE interfaces (2), parallel port, keyboard port, PS/2 mouse interface, serial interfaces (2), VGA port, IR connector, USB interfaces (2), AT power connector, ATX power connector, line in, line out/speaker, microphone in |
CONNECTIONS |
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| Purpose | Location |
Purpose | Location |
| AT power connector | AT |
Soft off power supply | JP5/Pins 6 & 8 |
| ATX power connector | ATX |
IR connector | JP5/Pins 7, 9, 11 & 13 |
| Video and Audio connector | CN6 | Green PC connector | JP5/Pins 10 & 12 |
| Serial interface 1 | COM1 | Auxilliary Speaker | JP5/Pins 14 & 16 |
| Serial interface 2 | COM2 | PS/2 mouse interface | JP9 |
| Floppy drive interface | FLOPPY | Speaker | JSPK1 |
| Game port | GAME | Keyboard port | KB |
| 16-bit ISA slots | IS1 - IS2 | Power LED & keylock | KB-LOC |
| CPU fan power | JCFAN1 | Parallel interface | LPT |
| USB interfaces 1 | JP3/Pins 1, 3, 5 & 7 | 32-bit PCI slots | PC1 - PC2 |
| USB interfaces 2 | JP3/Pins 2, 4, 6 & 8 | Wake-on-LAN connector | WOL1 |
| IDE interface 1 | JP5/Pins 1 & 3 | Wake-on-modem connector | WOM1 |
| Reset switch | JP5/Pins 2 & 4 | ||
USER CONFIGURABLE SETTINGS |
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Function |
Label |
Position |
|
» |
ATX power supply selection | S2 | Open |
| AT power supply selection | S2 | Pins 1 & 3, 2 & 4 closed | |
DIMM CONFIGURATION |
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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 supports SDRAM memory. | ||
BATTERY SETTINGS |
||
Function |
JBAT1 | |
| » | CMOS memory normal operation | Pins 2 & 3 closed |
|
CMOS memory clear | Pins 3 & 4 closed |
| CMOS memory normal operation (External Battery) | Pins 1 & 2, 3 & 4 closed |
|
CPU SPEED SELECTION |
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Speed |
JP1/Pins 1 & 2 | JP1/Pins 3 & 4 | JP1/Pins 5 & 6 | JP1/Pins 7 & 8 | S1/Pins 1 & 2 | S1/Pins 3 & 4 |
180MHz |
Open | Open | Closed | Open | Closed | Open |
| 200MHz | Open | Open | Closed | Open | Open | Closed |
| 233MHz | Open | Open | Open | Closed | Open | Closed |
| 266MHz | Open | Open | Open | Open | Open | Closed |
CORE VOLTAGE SELECTION |
||
Voltage |
J4 | |
| » | 2.9V | Open |
| 3V | Pins 1 & 3 closed | |
| 3.6V | Pins 3 & 5 closed | |
I/O VOLTAGE SELECTION |
||
Voltage |
J4 | |
| » | 3.3V | Open |
| 3.45V | Pins 2 & 4 closed | |
| 3.6V | Pins 4 & 6 closed | |
CONNECTIONS |
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| Purpose | Location |
Purpose | Location |
| Line out/Speaker | CN1 | Video and Audio connector | CN6 |
| Line in | CN2 | Audio in - CD-ROM (Panasonic) | CN7 |
| Microphone in | CN3 | Audio in - CD-ROM (IDE) | CN6 |
| Composite connector | CN4 | S-Video connector | CN8 |
| VGA port | CN5 | ||
USER CONFIGURABLE SETTINGS |
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Function |
Label |
Position |
|
|
Speaker - right channel | JP10 | Pins 1 & 2 closed |
| Line out - right channel | JP10 | Pins 2 & 3 closed | |
| Speaker - left channel | JP11 | Pins 1 & 2 closed | |
| Line out - left channel | JP11 | Pins 2 & 3 closed | |