TYPHOON 486 VESA Motherboard Settings and Configuration
TARGET MICRO
TYPHOON 486 VESA
Processor | 80486SX/80487SX/80486DX/80486DX2 |
Processor Speed | 20/25/33/50 (Internal)/50/66 (Internal) |
Chip Set | Unichip |
Max. onboard DRAM | 128MB |
Cache | 32/64/128/256KB |
BIOS | AMI |
Dimensions | 260mm x 220mm |
I/O Options | 32-bit VESA local bus slots (3) |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | J4 | Turbo switch | JP17 |
Power LED & keylock | J5 | Reset switch | JP18 |
Speaker | J6 | 32-bit VESA local bus slots | S1, S2, & S3 |
Turbo LED | JP16 |
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USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Monitor type select color | JP1 | Open |
| Monitor type select monochrome | JP1 | Closed |
» | CMOS memory normal operation | JP2 | pins 1 & 2 closed |
| CMOS memory clear | JP2 | pins 2 & 3 closed |
DRAM CONFIGURATION | ||
Size | Bank 0 | Bank 1 |
1MB | (4) 256K x 9 | NONE |
2MB | (4) 256K x 9 | (4) 256K x 9 |
4MB | (4) 1M x 9 | NONE |
5MB | (4) 256K x 9 | (4) 1M x 9 |
8MB | (4) 1M x 9 | (4) 1M x 9 |
16MB | (4) 4M x 9 | NONE |
20MB | (4) 4M x 9 | (4) 1M x 9 |
32MB | (4) 4M x 9 | (4) 4M x 9 |
64MB | (4) 16M x 9 | NONE |
80MB | (4) 16M x 9 | (4) 4M x 9 |
128MB | (4) 16M x 9 | (4) 16M x 9 |
CACHE CONFIGURATION | |||
Size | Bank 0 | Bank 1 | TAG |
32KB | (4) 8K x 8 | NONE | 8K x 8 |
64KB | (4) 8K x 8 | (4) 8K x 8 | 8K x 8 |
128KB | (4) 32K x 8 | NONE | 8K x 8 |
256KB | (4) 32K x 8 | (4) 32K x 8 | 32K x 8 |
CACHE JUMPER CONFIGURATION | ||||
Size | JP6 | JP7 | JP9 | JP11 |
32KB | Open | Open | Open | pins 2 & 3 |
64KB | Open | Closed | Open | pins 1 & 2 |
128KB | Open | Closed | Closed | pins 1 & 2, 3 & 4 |
256KB | Closed | Closed | Closed | pins 1 & 2, 4 & 5 |
Note:Pins designated should be in the closed position. | ||||
VESA LOCAL BUS SELECT | |||
Mode | JP40 | JP41 | JP42 |
VL-Bus Master | Open | Open | Open |
VL-Bus Slave | Closed | Closed | Closed |
VESA CLOCK CONFIGURATION | |
Mode | JP43 |
Adjusted VL-BUS clock | pins 1 & 2 closed |
Normal VL-BUS clock | pins 2 & 3 closed |
VESA BUS SPEED (ID3) CONFIGURATION | ||
CPU speed | JP19 (ID3) | JP44 |
£ 33MHz | Open | pins 2 & 3 closed |
> 33MHz | Closed | pins 1 & 2 closed |
VESA ID4 CONFIGURATION | |
Setting | JP20 (ID4) |
Reserved for future use | Closed |
CPU SPEED CONFIGURATION | |||
Speed | JP29 | JP30 | JP31 |
20MHz | Open | Closed | Closed |
25MHz | Closed | Open | Closed |
33MHz | Closed | Closed | Open |
50i MHz | Closed | Open | Closed |
50MHz | Open | Closed | Open |
66i MHz | Closed | Closed | Open |
CPU TYPE CONFIGURATION | |
Type | JP4 |
80486SX | 5 & 6 closed |
80487SX | pins 2 & 3, 4 & 5, 6 & 7 closed |
80486DX | pins 1 & 2, 4 & 5, 6 & 7 closed |
80486DX2 | pins 1 & 2, 4 & 5, 6 & 7 closed |
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