GENOA SYSTEMS CORPORATION
486F55
| 
 Processor  | 
 CX486S/AM486SX/80486SX/CX486S2/AM486SX2/80486SX2/ ODP487/80487SX/CX486DX/80486DX/CX486DX2/AM486DX2/ (SL)AM486DX2(WB)/(SL)AM486DX2(WT)/80486DX2/AM486DX4/ (SL)AM486DX4(WB)/(SL)AM486DX4(WT)/80486DX4/P24D/P24CT/ P24C(WB)/P24T/CX5X86  | 
| 
 Processor Speed  | 
 25/33/40/50(internal)/66(internal)/75(internal)/100(internal)MHz  | 
| 
 Chip Set  | 
 SIS  | 
| 
 Video Chip Set  | 
 None  | 
| 
 Maximum Onboard Memory  | 
 256MB  | 
| 
 Maximum Video Memory  | 
 None  | 
| 
 Cache  | 
 128/256/512KB  | 
| 
 BIOS  | 
 Award  | 
| 
 Dimensions  | 
 254mm x 218mm  | 
| 
 I/O Options  | 
 32-bit PCI slots (3), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, serial ports (2)  | 
| 
 NPU Options  | 
 None  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 Serial port  | 
 CN1  | 
 Turbo switch  | 
 J2  | 
| 
 Serial port  | 
 CN2  | 
 Green PC connector  | 
 J3  | 
| 
 Parallel port  | 
 CN3  | 
 Turbo LED  | 
 J4  | 
| 
 Floppy drive interface  | 
 CN4  | 
 Reset switch  | 
 J5  | 
| 
 IDE interface 2  | 
 CN5  | 
 Power LED & keylock  | 
 J6  | 
| 
 IDE interface 1  | 
 CN6  | 
 Speaker  | 
 J7  | 
| 
 IDE interface LED  | 
 J1  | 
 32-bit PCI slots  | 
 PC1 - PC3  | 
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Label  | 
 Position  | |
| 
 »  | 
 CMOS memory normal operation  | 
 JP2  | 
 Pins 1 & 2 closed  | 
| 
 CMOS memory clear  | 
 JP2  | 
 Pins 2 & 3 closed  | |
| 
 »  | 
 Parallel port IRQ select IRQ7  | 
 JP6  | 
 Pins 1 & 2 closed  | 
| 
 Parallel port IRQ select IRQ5  | 
 JP6  | 
 Pins 2 & 3 closed  | |
| 
 DRAM CONFIGURATION  | ||||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 Bank 2  | 
 Bank 3  | 
| 
 4MB  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
| 
 4MB  | 
 None  | 
 (1) 512K x 36  | 
 None  | 
 (1) 512K x 36  | 
| 
 4MB  | 
 None  | 
 (1) 512K x 36  | 
 None  | 
 (1) 512K x 36  | 
| 
 4MB  | 
 None  | 
 (1) 512K x 36  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
| 
 7MB  | 
 (1) 1M x 36  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
| 
 10MB  | 
 None  | 
 (1) 2M x 36  | 
 None  | 
 (1) 512K x 36  | 
| 
 13MB  | 
 (1) 256K x 36  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
| 
 16MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
| 
 16MB  | 
 None  | 
 (1) 2M x 36  | 
 None  | 
 (1) 2M x 36  | 
| 
 16MB  | 
 None  | 
 (1) 2M x 36  | 
 None  | 
 (1) 2M x 36  | 
| 
 16MB  | 
 None  | 
 (1) 2M x 36  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
| 
 19MB  | 
 (1) 4M x 36  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
| 
 28MB  | 
 (1) 4M x 36  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
| 
 34MB  | 
 None  | 
 (1) 8M x 36  | 
 None  | 
 (1) 512K x 36  | 
| 
 34MB  | 
 None  | 
 (1) 512K x 36  | 
 None  | 
 (1) 8M x 36  | 
| 
 40MB  | 
 None  | 
 (1) 8M x 36  | 
 None  | 
 (1) 2M x 36  | 
| 
 49MB  | 
 (1) 256K x 36  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
| 
 52MB  | 
 (1) 1M x 36  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
| 
 64MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
| 
 64MB  | 
 None  | 
 (1) 8M x 36  | 
 None  | 
 (1) 8M x 36  | 
| 
 64MB  | 
 None  | 
 (1) 8M x 36  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
| 
 67MB  | 
 (1) 16M x 36  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
 (1) 256K x 36  | 
| 
 76MB  | 
 (1) 16M x 36  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
| 
 112MB  | 
 (1) 16M x 36  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
| 
 DRAM CONFIGURATION (CON’T)  | ||||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 Bank 2  | 
 Bank 3  | 
| 
 130MB  | 
 None  | 
 (1) 512K x 36  | 
 None  | 
 (1) 32M x 36  | 
| 
 136MB  | 
 None  | 
 (1) 32M x 36  | 
 None  | 
 (1) 2M x 36  | 
| 
 136MB  | 
 None  | 
 (1) 2M x 36  | 
 None  | 
 (1) 32M x 36  | 
| 
 136MB  | 
 (1) 1M x 36  | 
 (1) 1M x 36  | 
 None  | 
 (1) 32M x 36  | 
| 
 160MB  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
 None  | 
 (1) 8M x 36  | 
| 
 160MB  | 
 None  | 
 (1) 8M x 36  | 
 None  | 
 (1) 32M x 36  | 
| 
 160MB  | 
 None  | 
 (1) 32M x 36  | 
 None  | 
 (1) 8M x 36  | 
| 
 160MB  | 
 None  | 
 (1) 8M x 36  | 
 None  | 
 (1) 32M x 36  | 
| 
 160MB  | 
 (1) 4M x 36  | 
 (1) 4M x 36  | 
 None  | 
 (1) 32M x 36  | 
| 
 193MB  | 
 (1) 256K x 36  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
| 
 196MB  | 
 (1) 1M x 36  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
| 
 208MB  | 
 (1) 4M x 36  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
| 
 256MB  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
| 
 256MB  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
 None  | 
 (1) 32M x 36  | 
| 
 256MB  | 
 None  | 
 (1) 32M x 36  | 
 None  | 
 (1) 32M x 36  | 
| 
 256MB  | 
 None  | 
 (1) 32M x 36  | 
 (1) 16M x 36  | 
 (1) 16M x 36  | 
| 
 CACHE CONFIGURATION  | |||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 TAG  | 
| 
 128KB  | 
 (4) 32K x 8  | 
 None  | 
 (1) 8K/16K/32K x 8  | 
| 
 256KB (A)  | 
 (4) 64K x 8  | 
 None  | 
 (1) 16K/32K x 8  | 
| 
 256KB (B)  | 
 (4) 32K x 8  | 
 (4) 32K x 8  | 
 (1) 16K/32K x 8  | 
| 
 512KB  | 
 (4) 128K x 8  | 
 None  | 
 (1) 32K x 8  | 
| 
 CACHE JUMPER CONFIGURATION  | |||
| 
 Size  | 
 JP15  | 
 JP16  | 
 JP20  | 
| 
 128KB  | 
 Pins 1 & 2 closed  | 
 Pins 1 & 2 closed  | 
 Pins 2 & 3 closed  | 
| 
 256KB (A)  | 
 Pins 1 & 2 closed  | 
 Pins 2 & 3 closed  | 
 Pins 2 & 3 closed  | 
| 
 256KB (B)  | 
 Pins 1 & 2 closed  | 
 Pins 2 & 3 closed  | 
 Pins 1 & 2 closed  | 
| 
 512KB  | 
 Pins 2 & 3 closed  | 
 Pins 2 & 3 closed  | 
 Pins 2 & 3 closed  | 
| 
 CPU SPEED SELECTION  | ||
| 
 Speed  | 
 JP22  | 
 JP23  | 
| 
 25MHz  | 
 Open  | 
 Open  | 
| 
 33MHz  | 
 Closed  | 
 Closed  | 
| 
 40MHz  | 
 Open  | 
 Closed  | 
| 
 50iMHz  | 
 Open  | 
 Open  | 
| 
 66iMHz  | 
 Closed  | 
 Closed  | 
| 
 75iMHz  | 
 Open  | 
 Open  | 
| 
 100iMHz  | 
 Closed  | 
 Closed  | 
| 
 CPU TYPE SELECTION  | ||||
| 
 Type  | 
 JP8  | 
 JP9  | 
 JP10  | 
 JP11  | 
| 
 CX486S  | 
 Open  | 
 1 & 2, 5 & 6  | 
 2 & 3, 5 & 6, 7 & 8  | 
 1 & 2, 4 & 5, 6 & 7  | 
| 
 AM486SX  | 
 Open  | 
 1 & 2, 4 & 5  | 
 2 & 3, 4 & 5, 6 & 7  | 
 3 & 4, 5 & 6  | 
| 
 80486SX  | 
 Open  | 
 1 & 2, 4 & 5  | 
 2 & 3, 4 & 5, 6 & 7  | 
 3 & 4, 5 & 6  | 
| 
 CX486S2  | 
 Open  | 
 1 & 2, 5 & 6  | 
 2 & 3, 5 & 6, 7 & 8  | 
 4 & 5, 6 & 7  | 
| 
 AM486SX2  | 
 Open  | 
 1 & 2, 4 & 5  | 
 2 & 3, 4 & 5, 6 & 7  | 
 3 & 4, 5 & 6  | 
| 
 80486SX2  | 
 Open  | 
 1 & 2, 4 & 5  | 
 2 & 3, 4 & 5, 6 & 7  | 
 3 & 4, 5 & 6  | 
| 
 ODP487  | 
 Open  | 
 1 & 2, 4 & 5  | 
 1 & 2, 4 & 5, 6 & 7  | 
 3 & 4, 5 & 6, 7 & 8  | 
| 
 80487SX  | 
 Open  | 
 1 & 2, 4 & 5  | 
 1 & 2, 4 & 5, 6 & 7  | 
 3 & 4, 5 & 6, 7 & 8  | 
| 
 CX486DX  | 
 Open  | 
 1 & 2, 5 & 6  | 
 1 & 2, 5 & 6, 7 & 8  | 
 4 & 5, 6 & 7  | 
| 
 80486DX  | 
 Open  | 
 1 & 2, 4 & 5  | 
 1 & 2, 4 & 5, 6 & 7  | 
 3 & 4, 5 & 6, 7 & 8  | 
| 
 CX486DX2  | 
 Open  | 
 1 & 2, 5 & 6  | 
 1 & 2, 5 & 6, 7 & 8  | 
 4 & 5, 6 & 7  | 
| 
 AM486DX2  | 
 Open  | 
 1 & 2, 4 & 5  | 
 1 & 2, 4 & 5, 6 & 7  | 
 3 & 4, 5 & 6, 7 & 8  | 
| 
 (SL)AM486DX2 (WB)  | 
 2 & 3  | 
 2 & 3, 4 & 5  | 
 1 & 2, 4 & 5, 6 & 7  | 
 3 & 4, 5 & 6  | 
| 
 (SL)AM486DX2 (WT)  | 
 2 & 3  | 
 2 & 3, 4 & 5  | 
 1 & 2, 4 & 5, 6 & 7  | 
 3 & 4, 5 & 6, 7 & 8  | 
| 
 80486DX2  | 
 Open  | 
 1 & 2, 4 & 5  | 
 1 & 2, 4 & 5, 6 & 7  | 
 3 & 4, 5 & 6, 7 & 8  | 
| 
 AM486DX4  | 
 Open  | 
 1 & 2, 4 & 5  | 
 1 & 2, 4 & 5, 6 & 7  | 
 3 & 4, 5 & 6  | 
| 
 (SL)AM486DX4 (WB)  | 
 Open  | 
 2 & 3, 4 & 5  | 
 1 & 2, 4 & 5, 6 & 7  | 
 3 & 4, 5 & 6  | 
| 
 (SL)AM486DX4 (WT)  | 
 Open  | 
 2 & 3, 4 & 5  | 
 1 & 2, 4 & 5, 6 & 7  | 
 3 & 4, 5 & 6, 7 & 8  | 
| 
 80486DX4  | 
 Open  | 
 1 & 2, 4 & 5  | 
 1 & 2, 4 & 5, 6 & 7  | 
 3 & 4, 5 & 6, 7 & 8  | 
| 
 P24D  | 
 Open  | 
 2 & 3, 4 & 5  | 
 1 & 2, 4 & 5, 6 & 7  | 
 3 & 4, 5 & 6, 7 & 8  | 
| 
 P24CT  | 
 Open  | 
 2 & 3, 4 & 5  | 
 1 & 2, 4 & 5, 6 & 7  | 
 3 & 4, 5 & 6, 7 & 8  | 
| 
 P24C (WB)  | 
 Open  | 
 2 & 3, 4 & 5  | 
 1 & 2, 4 & 5, 6 & 7  | 
 3 & 4, 5 & 6  | 
| 
 P24T  | 
 Open  | 
 2 & 3, 4 & 5  | 
 1 & 2, 4 & 5, 6 & 7  | 
 3 & 4, 5 & 6, 7 & 8  | 
| 
 CX5X86  | 
 Open  | 
 1 & 2, 4 & 5  | 
 1 & 2, 4 & 5, 6 & 7  | 
 3 & 4, 5 & 6, 7 & 8  | 
| 
 Note: Pins designated should be in the closed position.  | ||||
| 
 CPU VOLTAGE SELECTION  | ||||
| 
 Voltage  | 
 JP17  | 
 JP18  | 
 JP19  | |
| 
 3.3v  | 
 Open  | 
 Open  | 
 Open  | |
| 
 3.6v  | 
 Closed  | 
 Open  | 
 Open  | |
| » | 
 5v  | 
 Open  | 
 Closed  | 
 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  | |