FORTRESS SYSTEMS INTERNATIONAL
GENESIS II 486 VESA/ISA
|
Processor |
CX486SX/AM486SX/80486SX/CX486DX/AM486DX/80486DX/ CX486DX2/AM486DX2/80486DX2/CX486DX4/AM486DX4/80486DX4 |
|
Processor Speed |
25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/ 100(internal)/120(internal)MHz |
|
Chip Set |
Unidentified |
|
Video Chip Set |
None |
|
Maximum Onboard Memory |
64MB |
|
Maximum Video Memory |
None |
|
Cache |
128/256/512/1024KB |
|
BIOS |
AMI/Award/MR BIOS |
|
Dimensions |
254mm x 218mm |
|
I/O Options |
32-bit VESA local bus slots (3), green PC connector |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Power LED & keylock |
JP16 |
Green PC connector |
JP20 |
|
Speaker |
JP17 |
Turbo LED |
JP21 |
|
Green PC LED |
JP18 |
Reset switch |
JP26 |
|
Turbo switch |
JP19 |
32-bit VESA local bus slots |
SL1 SL3 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
|
CMOS memory normal operation |
JP1 |
Pins 1 & 2 closed |
|
CMOS memory clear |
JP1 |
Pins 2 & 3 closed | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
1MB |
(1) 256K x 36 |
None |
None |
None |
|
2MB |
(1) 256K x 36 |
(1) 256K x 36 |
None |
None |
|
2MB |
(1) 512K x 36 |
None |
None |
None |
|
3MB |
(1) 256K x 36 |
(1) 512K x 36 |
None |
None |
|
3MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
None |
|
4MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
|
4MB |
(1) 512K x 36 |
(1) 512K x 36 |
None |
None |
|
4MB |
(1) 1M x 36 |
None |
None |
None |
|
5MB |
(1) 256K x 36 |
(1) 1M x 36 |
None |
None |
|
5MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 512K x 36 |
|
6MB |
(1) 512K x 36 |
(1) 1M x 36 |
None |
None |
|
8MB |
(1) 1M x 36 |
(1) 1M x 36 |
None |
None |
|
12MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
None |
|
16MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
|
16MB |
(1) 2M x 36 |
(1) 2M x 36 |
None |
None |
|
16MB |
(1) 4M x 36 |
None |
None |
None |
|
32MB |
(1) 4M x 36 |
(1) 4M x 36 |
None |
None |
|
48MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
None |
|
64MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
|
Note: Board accepts x 32 SIMMs. | ||||
|
DRAM JUMPER CONFIGURATION | |
|
Setting |
JP70 |
|
1 BK installed |
Pins 1 & 2 closed |
|
2 BK installed |
Pins 2 & 3 closed |
|
CACHE CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
128KB |
(4) 32K x 8 |
None |
|
256KB (A) |
(4) 32K x 8 |
(4) 32K x 8 |
|
256KB (B) |
(4) 64K x 8 |
None |
|
512KB (A) |
(4) 128K x 8 |
None |
|
512KB (B) |
(4) 64K x 8 |
(4) 64K x 8 |
|
1MB |
(4) 128K x 8 |
(4) 128K x 8 |
|
CACHE JUMPER CONFIGURATION | |||
|
Size |
JP6 |
JP11 |
JP12 |
|
128KB |
Open |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
|
256KB (A) |
Open |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
256KB (B) |
Open |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
|
512KB (A) |
Open |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
|
512KB (B) |
Pins 1 & 2 closed |
Open |
Pins 2 & 3 closed |
|
1MB |
Pins 2 & 3 closed |
Open |
Pins 2 & 3 closed |
|
CPU SPEED SELECTION | ||||
|
Speed |
JP2A |
JP2B |
JP2C |
JP22 |
|
25MHz |
Closed |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
Open |
|
33MHz |
Closed |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
Open |
|
40MHz |
Open |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
Closed |
|
50iMHz |
Closed |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
Open |
|
50MHz |
Open |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
Closed |
|
66iMHz |
Closed |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
Open |
|
75iMHz |
Closed |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
Open |
|
80iMHz |
Open |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
Closed |
|
100iMHz |
Closed |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
Open |
|
120iMHz |
Open |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
Closed |
|
CPU TYPE SELECTION | |
|
Type |
JP15 |
|
Cyrix |
Pins 2 & 3 closed |
|
AMD |
Pins 1 & 2 closed |
|
Intel |
Pins 1 & 2 closed |
|
VL BUS SPEED SELECTION | |
|
Speed |
JP13 |
|
<= 33MHz |
Closed |
|
>33 MHz |
Open |
|
FLASH BIOS VOLTAGE SELECTION | ||
|
Voltage |
JP5 |
JP80 |
|
5v |
Pins 1 & 2 closed |
Pins 1 & 3, 2 & 4 closed |
|
12v |
Pins 2 & 3 closed |
Pins 3 & 5, 4 & 6 closed |