GENOA SYSTEMS CORPORATION
TURBOEXPRESS 486PCI-4G
Processor | 80486SX/80486Overdrive/80487SX/80486DX/80486DX2 |
Processor Speed | 25/33/50(internal)/66(internal)MHz |
Chip Set | Unidentified |
Video Chip Set | None |
Maximum Onboard Memory | 128MB |
Maximum Video Memory | None |
Cache | 128/256/512KB |
BIOS | Award |
Dimensions | 254mm x 218mm |
I/O Options | 32-bit PCI slots (4) |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Power LED & keylock | JP17 | Turbo LED | JP20 |
Speaker | JP18 | Turbo switch | JP21 |
Reset switch | JP19 | 32-bit PCI slots | PC1 – PC4 |
DRAM CONFIGURATION | ||
Size | Bank 0 | Bank 1 |
2MB | (2) 256K x 36 | None |
4MB | (2) 512K x 36 | None |
4MB | (2) 256K x 36 | (2) 256K x 36 |
6MB | (2) 512K x 36 | (2) 256K x 36 |
8MB | (2) 1M x 36 | None |
8MB | (2) 512K x 36 | (2) 512K x 36 |
10MB | (2) 1M x 36 | (2) 256K x 36 |
12MB | (2) 1M x 36 | (2) 512K x 36 |
16MB | (2) 2M x 36 | None |
16MB | (2) 1M x 36 | (2) 1M x 36 |
18MB | (2) 2M x 36 | (2) 256K x 36 |
20MB | (2) 2M x 36 | (2) 512K x 36 |
24MB | (2) 1M x 36 | (2) 2M x 36 |
32MB | (2) 4M x 36 | None |
32MB | (2) 2M x 36 | (2) 2M x 36 |
34MB | (2) 4M x 36 | (2) 256K x 36 |
36MB | (2) 512K x 36 | (2) 4M x 36 |
40MB | (2) 4M x 36 | (2) 1M x 36 |
48MB | (2) 2M x 36 | (2) 4M x 36 |
64MB | (2) 8M x 36 | None |
64MB | (2) 4M x 36 | (2) 4M x 36 |
66MB | (2) 8M x 36 | (2) 256K x 36 |
68MB | (2) 512K x 36 | (2) 8M x 36 |
72MB | (2) 8M x 36 | (2) 1M x 36 |
80MB | (2) 2M x 36 | (2) 8M x 36 |
96MB | (2) 8M x 36 | (2) 4M x 36 |
128MB | (2) 8M x 36 | (2) 8M x 36 |
Note: Banks are interchangeable. |
CACHE CONFIGURATION | |||
Size | Bank 0 | Bank 1 | TAG |
128KB | (4) 32K x 8 | None | (1) 32K x 8 |
256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
512KB | (4) 128K x 8 | None | (1) 32K x 8 |
CACHE JUMPER CONFIGURATION | ||||
Size | JP2 | JP3 | JP12 | JP13 |
128KB | Pins 1 & 2 closed | Pins 2 & 3 closed | Open | Open |
256KB | Pins 2 & 3 closed | Pins 1 & 2 closed | Closed | Open |
512KB | Pins 2 & 3 closed | Pins 2 & 3 closed | Closed | Closed |
CACHE CONFIGURATION | |
Setting | JP4 |
Enabled | Pins 2 & 3 closed |
Disabled | Pins 1 & 2 closed |
CPU SPEED SELECTION | |||
Speed | JP5 | JP10 | JP11 |
25MHz | Pins 1 & 2 closed | Open | Closed |
33MHz | Pins 2 & 3 closed | Closed | Open |
50iMHz | Pins 1 & 2 closed | Open | Closed |
66iMHz | Pins 2 & 3 closed | Closed | Open |
CPU TYPE SELECTION | |||
Type | JP14 | JP15 | JP16 |
80486SX | Pins 1 & 2 closed | Open | Pins 2 & 3 closed |
486Overdrive (168 pin) | Pins 1 & 2 closed | Pins 1 & 2 closed | Pins 1 & 2, 3 & 4 closed |
486Overdrive (169 pin) | Pins 1 & 2 closed | Pins 2 & 3 closed | Pins 1 & 2, 3 & 4 closed |
80487SX | Pins 1 & 2 closed | Pins 2 & 3 closed | Pins 1 & 2, 3 & 4 closed |
80486DX | Pins 1 & 2 closed | Pins 1 & 2 closed | Pins 1 & 2, 3 & 4 closed |
8048DX2 | Pins 1 & 2 closed | Pins 1 & 2 closed | Pins 1 & 2, 3 & 4 closed |
PCI TRIGGER SELECTION | |||
Setting | JP27 | JP28 | |
» | ISA IDE | Pins 2 & 3 closed | Closed |
Level | Pins 1 & 2 closed | Open | |
Edge | Pins 4 & 5 closed | Open |