AMERICAN MEGATRENDS, INC.
MEGARUM II
| Device Type | Mainboard |
| Processor | Pentium II (2) |
| Processor Speed | 120/133/150/166/180/200/210/233/240/266/300/333/400MHz |
| Chip Set | Intel |
| Maximum Onboard Memory | 2GB (EDO & SDRAM supported) |
| Cache | 256/512KB (located on the Pentium II CPU) |
| BIOS | AMI |
| Dimensions | Unidentified |
| I/O Options | 64-bit PCI slots (2), 32-bit PCI slots (4), floppy drive interface, IDE interfaces (2), Wide SCSI interfaces (2), parallel port, PS/2 mouse port, serial ports (2), IR connector, VRM connectors (2), USB ports (2), ATX power connectors (2), AGP slot, RAID slot, MegaRAC connector |
CONNECTIONS |
|||
| Purpose | Location |
Purpose | Location |
| AGP slot | AGP |
CPU fan power 2 | JP2 |
| ATX power connector 1 | ATX1 |
IR connector | JP3 |
| ATX power connector 2 | ATX2 |
IDE interface 2 | JP4 |
| USB connector 1 | J1 | IDE interface 1 | JP5 |
| PS/2 mouse port | J2 | Floppy drive interface | JP9 |
| USB connector 2 | J3 | IDE interface LED | JP12 |
| VRM connector | J4 | Chassis intrusion connector | JP13 |
| Parallel port | J5 | Power switch | JP16 |
| Serial port 1 | J6 | Reset switch | JP17 |
| Serial port 2 | J7 | Chassis fan power 1 | JP18 |
| VRM connector | J8 | Chassis fan power 2 | JP19 |
| MegaRAC connector | J9 | Speaker | JP20 |
| Power LED & keylock | J15 | 32-bit PCI slots | PC1 - PC4 |
| Wide SCSI interface 2 | J17 | 64-bit PCI/RAID slot | PC5 |
| Wide SCSI interface 1 | J18 | 64-bit PCI slot | PC6 |
| CPU fan power 1 | JP1 | ||
USER CONFIGURABLE SETTINGS |
|||
Function |
Label |
Position |
|
|
System bus frequency auto-detect | JP6 | Open |
| System bus frequency 66MHz | JP6 | Closed | |
| » | CMOS memory normal operation | JP11 | Pins 1 & 2 closed |
|
CMOS memory clear | JP11 | Pins 2 & 3 closed |
| » | Flash BIOS size select 256KB | JP14 | Pins 1 & 2 closed |
| Flash BIOS size select 128KB | JP14 | Pins 2 & 3 closed | |
| » | Flash BIOS voltage select 12V | JP15 | Pins 1 & 2 closed |
| Flash BIOS voltage select 5V | JP15 | Pins 2 & 3 closed | |
| DIMM CONFIGURATION | ||||
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
8MB |
(1) 1M x 64 |
None |
None |
None |
16MB |
(1) 1M x 64 |
(1) 1M x 64 |
None |
None |
16MB |
(1) 2M x 64 |
None |
None |
None |
24MB |
(1) 1M x 64 |
(1) 1M x 64 |
(1) 1M x 64 |
None |
32MB |
(1) 1M x 64 |
(1) 1M x 64 |
(1) 1M x 64 |
(1) 1M x 64 |
32MB |
(1) 2M x 64 |
(1) 2M x 64 |
None |
None |
32MB |
(1) 4M x 64 |
None |
None |
None |
48MB |
(1) 2M x 64 |
(1) 2M x 64 |
(1) 2M x 64 |
None |
64MB |
(1) 2M x 64 |
(1) 2M x 64 |
(1) 2M x 64 |
(1) 2M x 64 |
64MB |
(1) 4M x 64 |
(1) 4M x 64 |
None |
None |
64MB |
(1) 8M x 64 |
None |
None |
None |
80MB |
(1) 4M x 64 |
(1) 4M x 64 |
(1) 1M x 64 |
(1) 1M x 64 |
96MB |
(1) 4M x 64 |
(1) 4M x 64 |
(1) 4M x 64 |
None |
96MB |
(1) 4M x 64 |
(1) 4M x 64 |
(1) 2M x 64 |
(1) 2M x 64 |
128MB |
(1) 4M x 64 |
(1) 4M x 64 |
(1) 4M x 64 |
(1) 4M x 64 |
128MB |
(1) 8M x 64 |
(1) 8M x 64 |
None |
None |
128MB |
(1) 16M x 64 |
None |
None |
None |
144MB |
(1) 8M x 64 |
(1) 8M x 64 |
(1) 1M x 64 |
(1) 1M x 64 |
160MB |
(1) 8M x 64 |
(1) 8M x 64 |
(1) 2M x 64 |
(1) 2M x 64 |
192MB |
(1) 8M x 64 |
(1) 8M x 64 |
(1) 8M x 64 |
None |
192MB |
(1) 8M x 64 |
(1) 8M x 64 |
(1) 4M x 64 |
(1) 4M x 64 |
256MB |
(1) 8M x 64 |
(1) 8M x 64 |
(1) 8M x 64 |
(1) 8M x 64 |
256MB |
(1) 16M x 64 |
(1) 16M x 64 |
None |
None |
256MB |
(1) 32M x 64 |
None |
None |
None |
272MB |
(1) 16M x 64 |
(1) 16M x 64 |
(1) 1M x 64 |
(1) 1M x 64 |
288MB |
(1) 16M x 64 |
(1) 16M x 64 |
(1) 2M x 64 |
(1) 2M x 64 |
320MB |
(1) 16M x 64 |
(1) 16M x 64 |
(1) 4M x 64 |
(1) 4M x 64 |
384MB |
(1) 16M x 64 |
(1) 16M x 64 |
(1) 16M x 64 |
None |
384MB |
(1) 16M x 64 |
(1) 16M x 64 |
(1) 8M x 64 |
(1) 8M x 64 |
512MB |
(1) 16M x 64 |
(1) 16M x 64 |
(1) 16M x 64 |
(1) 16M x 64 |
512MB |
(1) 32M x 64 |
(1) 32M x 64 |
None |
None |
512MB |
(1) 64M x 64 |
None |
None |
None |
528MB |
(1) 32M x 64 |
(1) 32M x 64 |
(1) 1M x 64 |
(1) 1M x 64 |
544MB |
(1) 32M x 64 |
(1) 32M x 64 |
(1) 2M x 64 |
(1) 2M x 64 |
576MB |
(1) 32M x 64 |
(1) 32M x 64 |
(1) 4M x 64 |
(1) 4M x 64 |
640MB |
(1) 32M x 64 |
(1) 32M x 64 |
(1) 8M x 64 |
(1) 8M x 64 |
768MB |
(1) 32M x 64 |
(1) 32M x 64 |
(1) 32M x 64 |
None |
768MB |
(1) 32M x 64 |
(1) 32M x 64 |
(1) 16M x 64 |
(1) 16M x 64 |
1024MB |
(1) 32M x 64 |
(1) 32M x 64 |
(1) 32M x 64 |
(1) 32M x 64 |
1024MB |
(1) 64M x 64 |
(1) 64M x 64 |
None |
None |
1040MB |
(1) 64M x 64 |
(1) 64M x 64 |
(1) 1M x 64 |
(1) 1M x 64 |
1056MB |
(1) 64M x 64 |
(1) 64M x 64 |
(1) 2M x 64 |
(1) 2M x 64 |
1088MB |
(1) 64M x 64 |
(1) 64M x 64 |
(1) 4M x 64 |
(1) 4M x 64 |
1152MB |
(1) 64M x 64 |
(1) 64M x 64 |
(1) 8M x 64 |
(1) 8M x 64 |
1280MB |
(1) 64M x 64 |
(1) 64M x 64 |
(1) 16M x 64 |
(1) 16M x 64 |
1536MB |
(1) 64M x 64 |
(1) 64M x 64 |
(1) 64M x 64 |
None |
1536MB |
(1) 64M x 64 |
(1) 64M x 64 |
(1) 32M x 64 |
(1) 32M x 64 |
2048MB |
(1) 64M x 64 |
(1) 64M x 64 |
(1) 64M x 64 |
(1) 64M x 64 |
| Note: Board supports EDO & SDRAM memory. | ||||
CACHE CONFIGURATION |
| Note: 256KB/512KB cache is located on the Pentium II CPU. |
CPU SPEED SELECTION |
|||
CPU speed |
Clock speed |
Multiplier |
JP8 |
233MHz |
66MHz |
3.5x |
Pins 1 & 2, 7 & 8 closed |
266MHz |
66MHz |
4x |
Pins 3 & 4, 5 & 6 closed |
300MHz |
66MHz |
4.5x |
Pins 3 & 4, 7 & 8 closed |
333MHz |
66MHz |
5x |
Pins 5 & 6, 7 & 8 closed |
350MHz |
100MHz |
3.5x |
Pins 1 & 2, 7 & 8 closed |
| 400MHz | 100MHz | 4x | Pins 3 & 4, 5 & 6 closed |
| 450MHz | 100MHz | 4.5x | Pins 3 & 4, 7 & 8 closed |
| 500MHz | 100MHz | 5x | Pins 5 & 6, 7 & 8 closed |