AST RESEARCH, INC.
PREMMIA SE
| 
 Processor  | 
 80486SX/80486DX/80486DX2/Pentium Overdrive/Pentium  | 
| 
 Processor Speed  | 
 25/33/50(internal)/66(internal)MHz  | 
| 
 Chip Set  | 
 AST  | 
| 
 Max. Onboard DRAM  | 
 128MB  | 
| 
 Cache  | 
 64/128/256KB (with external cache card installed)  | 
| 
 BIOS  | 
 AST  | 
| 
 Dimensions  | 
 330mm x 218mm  | 
| 
 I/O Options  | 
 Floppy drive interfaces (2), IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port, SCSI backplane card  | 
| 
 NPU Options  | 
 None  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 Chassis fan power  | 
 J9  | 
 IDE interface  | 
 J22  | 
| 
 PS/2 mouse port  | 
 J12  | 
 Floppy drive interface (primary)  | 
 J24  | 
| 
 Parallel port  | 
 J13  | 
 Floppy drive interface (secondary)  | 
 J25  | 
| 
 Serial port 1  | 
 J14  | 
 External battery  | 
 J26  | 
| 
 Pentium/Cache upgrade connector  | 
 J17  | 
 Speaker  | 
 J27  | 
| 
 VGA port  | 
 J18  | 
 Chassis fan power  | 
 J28  | 
| 
 VGA feature connector  | 
 J19  | 
 Control console connector  | 
 J29  | 
| 
 Serial port 2  | 
 J20  | 
 IDE interface LED  | 
 J35  | 
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Jumper/Switch  | 
 Position  | |
| 
 »  | 
 Flash BIOS type select 5v - 5volt  | 
 E6  | 
 pins 2 & 3 closed  | 
| 
 Flash BIOS type select 12v - 12volt  | 
 E6  | 
 pins 1 & 2 closed  | |
| 
 »  | 
 Factory configured - do not alter  | 
 E800  | 
 pins 1 & 2 closed  | 
| 
 »  | 
 Factory configured - do not alter  | 
 E801  | 
 pins 2 & 3 closed  | 
| 
 »  | 
 Factory configured - do not alter  | 
 E802  | 
 pins 2 & 3 closed  | 
| 
 »  | 
 Factory configured - do not alter  | 
 E803  | 
 pins 1 & 2 closed  | 
| 
 »  | 
 Factory configured - do not alter  | 
 E804  | 
 pins 1 & 2 closed  | 
| 
 »  | 
 On board video enabled  | 
 SW1/1  | 
 On  | 
| 
 On board video disabled  | 
 SW1/1  | 
 Off  | |
| 
 »  | 
 Factory configured - do not alter  | 
 SW1/2  | 
 Off  | 
| 
 »  | 
 EISA CMOS memory normal operation  | 
 SW1/3  | 
 Off  | 
| 
 EISA CMOS memory clear  | 
 SW1/3  | 
 On  | |
| 
 »  | 
 Boot type select normal  | 
 SW1/4  | 
 Off  | 
| 
 Boot type select flash BIOS update  | 
 SW1/4  | 
 On  | |
| 
 »  | 
 Password disabled  | 
 SW1/5  | 
 On  | 
| 
 Password enabled  | 
 SW1/5  | 
 Off  | |
| 
 »  | 
 Factory configured - do not alter  | 
 SW1/6  | 
 Off  | 
| 
 »  | 
 System setup type select allow access  | 
 SW1/7  | 
 Off  | 
| 
 System setup type select deny access  | 
 SW1/7  | 
 On  | |
| 
 »  | 
 Factory configured - do not alter  | 
 SW1/8  | 
 Off  | 
| 
 »  | 
 I/O port address select 0398h  | 
 SW1/9  | 
 On  | 
| 
 I/O port address select 026Eh  | 
 SW1/9  | 
 Off  | |
| 
 »  | 
 Factory configured - do not alter  | 
 SW1/10  | 
 Off  | 
| 
 DRAM CONFIGURATION  | ||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
| 
 2MB  | 
 (2) 256K x 36  | 
 NONE  | 
| 
 4MB  | 
 (2) 256K x 36  | 
 (2) 256K x 36  | 
| 
 4MB  | 
 (2) 512K x 36  | 
 NONE  | 
| 
 6MB  | 
 (2) 256K x 36  | 
 (2) 512K x 36  | 
| 
 8MB  | 
 (2) 512K x 36  | 
 (2) 512K x 36  | 
| 
 10MB  | 
 (2) 256K x 36  | 
 (2) 1M x 36  | 
| 
 12MB  | 
 (2) 512K x 36  | 
 (2) 1M x 36  | 
| 
 16MB  | 
 (2) 2M x 36  | 
 NONE  | 
| 
 18MB  | 
 (2) 256K x 36  | 
 (2) 2M x 36  | 
| 
 20MB  | 
 (2) 512K x 36  | 
 (2) 2M x 36  | 
| 
 24MB  | 
 (2) 1M x 36  | 
 (2) 2M x 36  | 
| 
 32MB  | 
 (2) 2M x 36  | 
 (2) 2M x 36  | 
| 
 32MB  | 
 (2) 4M x 36  | 
 NONE  | 
| 
 34MB  | 
 (2) 256K x 36  | 
 (2) 4M x 36  | 
| 
 36MB  | 
 (2) 512K x 36  | 
 (2) 4M x 36  | 
| 
 40MB  | 
 (2) 1M x 36  | 
 (2) 4M x 36  | 
| 
 48MB  | 
 (2) 2M x 36  | 
 (2) 4M x 36  | 
| 
 64MB  | 
 (2) 4M x 36  | 
 (2) 4M x 36  | 
| 
 64MB  | 
 (2) 8M x 36  | 
 NONE  | 
| 
 66MB  | 
 (2) 256K x 36  | 
 (2) 8M x 36  | 
| 
 68MB  | 
 (2) 512K x 36  | 
 (2) 8M x 36  | 
| 
 72MB  | 
 (2) 1M x 36  | 
 (2) 8M x 36  | 
| 
 80MB  | 
 (2) 2M x 36  | 
 (2) 8M x 36  | 
| 
 96MB  | 
 (2) 4M x 36  | 
 (2) 8M x 36  | 
| 
 128MB  | 
 (2) 8M x 36  | 
 (2) 8M x 36  | 
| 
 VIDEO MEMORY CONFIGURATION  | ||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
| 
 515KB  | 
 (2) 256K x 4  | 
 NONE  | 
| 
 1MB  | 
 (2) 256K x 4  | 
 (2) 256K x 4  | 
| 
 Note: Bank 0- is factory installed and is not configurable.  | ||
| 
 MISCELLANEOUS TECHNICAL NOTE  | 
| 
 Note: CPU speed is dependent upon main board model.  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 DC power connector 1  | 
 CN1  | 
 SCSI connector  | 
 J4  | 
| 
 DC power connector 2  | 
 CN2  | 
 SCSI connector  | 
 J7  | 
| 
 SCSI connector  | 
 J1  | 
 SCSI drive cage connector  | 
 J8  | 
| 
 SCSI drive cage connector  | 
 J2  | 
 SCSI drive cage connector  | 
 J9  | 
| 
 SCSI drive cage connector  | 
 J3  | 
 SCSI connector  | 
 J10  | 
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Jumper  | 
 Position  | |
| 
 »  | 
 Terminator power jumper enabled  | 
 E13  | 
 Closed  | 
| 
 Terminator power jumper disabled  | 
 E13  | 
 Open  | |
| 
 »  | 
 Terminator power jumper enabled  | 
 E14  | 
 Closed  | 
| 
 Terminator power jumper disabled  | 
 E14  | 
 Open  | |
| 
 SCSI ID CONFIGURATION (J1)  | |||
| 
 Setting  | 
 E1  | 
 E2  | 
 E3  | 
| 
 ID0  | 
 Open  | 
 Open  | 
 Open  | 
| 
 ID1  | 
 Closed  | 
 Open  | 
 Open  | 
| 
 ID2  | 
 Open  | 
 Closed  | 
 Open  | 
| 
 ID3  | 
 Closed  | 
 Closed  | 
 Open  | 
| 
 ID4  | 
 Open  | 
 Open  | 
 Closed  | 
| 
 ID5  | 
 Closed  | 
 Open  | 
 Closed  | 
| 
 ID6  | 
 Open  | 
 Closed  | 
 Closed  | 
| 
 ID7  | 
 N/A  | 
 N/A  | 
 N/A  | 
| 
 Note: ID7 is factory reserved - do not alter.  | |||
| 
 SCSI ID CONFIGURATION (J4)  | |||
| 
 Setting  | 
 E4  | 
 E5  | 
 E6  | 
| 
 ID0  | 
 Open  | 
 Open  | 
 Open  | 
| 
 ID1  | 
 Closed  | 
 Open  | 
 Open  | 
| 
 ID2  | 
 Open  | 
 Closed  | 
 Open  | 
| 
 ID3  | 
 Closed  | 
 Closed  | 
 Open  | 
| 
 ID4  | 
 Open  | 
 Open  | 
 Closed  | 
| 
 ID5  | 
 Closed  | 
 Open  | 
 Closed  | 
| 
 ID6  | 
 Open  | 
 Closed  | 
 Closed  | 
| 
 ID7  | 
 N/A  | 
 N/A  | 
 N/A  | 
| 
 Note: ID7 is factory reserved - do not alter.  | |||
| 
 SCSI ID CONFIGURATION (J7)  | |||
| 
 Setting  | 
 E7  | 
 E8  | 
 E9  | 
| 
 ID0  | 
 Open  | 
 Open  | 
 Open  | 
| 
 ID1  | 
 Closed  | 
 Open  | 
 Open  | 
| 
 ID2  | 
 Open  | 
 Closed  | 
 Open  | 
| 
 ID3  | 
 Closed  | 
 Closed  | 
 Open  | 
| 
 ID4  | 
 Open  | 
 Open  | 
 Closed  | 
| 
 ID5  | 
 Closed  | 
 Open  | 
 Closed  | 
| 
 ID6  | 
 Open  | 
 Closed  | 
 Closed  | 
| 
 ID7  | 
 N/A  | 
 N/A  | 
 N/A  | 
| 
 Note: ID7 is factory reserved - do not alter.  | |||
| 
 SCSI ID CONFIGURATION (J10)  | |||
| 
 Setting  | 
 E10  | 
 E11  | 
 E12  | 
| 
 ID0  | 
 Open  | 
 Open  | 
 Open  | 
| 
 ID1  | 
 Closed  | 
 Open  | 
 Open  | 
| 
 ID2  | 
 Open  | 
 Closed  | 
 Open  | 
| 
 ID3  | 
 Closed  | 
 Closed  | 
 Open  | 
| 
 ID4  | 
 Open  | 
 Open  | 
 Closed  | 
| 
 ID5  | 
 Closed  | 
 Open  | 
 Closed  | 
| 
 ID6  | 
 Open  | 
 Closed  | 
 Closed  | 
| 
 ID7  | 
 N/A  | 
 N/A  | 
 N/A  | 
| 
 Note: ID7 is factory reserved - do not alter.  | |||