GEMLIGHT COMPUTER, LTD.
GMB-486UNP (VER. 3.01)
Processor | CX486S(WB)/CX486S(WT)/CX486S2(WB)/CX486S2(WT)/80486SX/ 80487SX/CX486DX(WB)/CX486DX(WT)/CX486DX2(WB)/CX486DX2(WT)/80486DX/80486DX2 |
Processor Speed | 25/33/40/50(internal)/50/66(internal)MHz |
Chip Set | Unidentified |
Video Chip Set | None |
Maximum Onboard Memory | 128MB |
Maximum Video Memory | None |
Cache | 32/64/128/256KB |
BIOS | AMI |
Dimensions | 254mm x 218mm |
I/O Options | 32-bit VESA local bus slots (3) |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | J2 | Turbo switch | J51 pins 15 - 17 |
Power LED & keylock | J51 pins 1 - 5 | Reset switch | J51 pins 19 & 20 |
Speaker | J51 pins 7 - 10 | 32-bit VESA local bus slots | SL1 - SL3 |
Turbo LED | J51 pins 12 & 13 |
USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
» | Monitor type select color | JP32 | Closed |
Monitor type select monochrome | JP32 | Open | |
» | CMOS memory normal operation | JP33 | Pins 1 & 2 closed |
CMOS memory clear | JP33 | Pins 2 & 3 closed | |
» | Factory configured - do not alter | JP74 | Unidentified |
» | Factory configured - do not alter | JP75 | Unidentified |
» | Factory configured - do not alter | JP76 | Unidentified |
» | Factory configured - do not alter | JP77 | Unidentified |
» | VL-BUS clock adjust normal operation | JP118 | Pins 1 & 2 closed |
VL-BUS clock adjust reserved | JP118 | Pins 2 & 3 closed | |
» | Factory configured - do not alter | JP121 | Unidentified |
» | Factory configured - do not alter | JP122 | Pins 1 & 2 closed |
» | Factory configured - do not alter | JP123 | Open |
» | Factory configured - do not alter | JP124 | Open |
» | Factory configured - do not alter | JP125 | Open |
» | Factory configured - do not alter | JXN | Pins 1 & 2 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 | (1) 8K x 8 |
64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 |
128KB | (4) 32K x 8 | None | (1) 8K x 8 |
256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
CACHE JUMPER CONFIGURATION | |||
Size | JP5 | JP7 | JP58 |
32KB | Open | Open | Pins 2 & 3 closed |
64KB | Closed | Open | Pins 1 & 2 closed |
128KB | Closed | Closed | Pins 1 & 2, 3 & 4 closed |
256KB | Closed | Closed | Pins 1 & 2, 4 & 5 closed |
CPU SPEED SELECTION | |||
Speed | JP34 | JP35 | JP36 |
25MHz | Closed | Open | Closed |
33MHz | Closed | Closed | Open |
40MHz | Open | Open | Closed |
50iMHz | Closed | Open | Closed |
50MHz | Open | Closed | Open |
66iMHz | Closed | Closed | Open |
CPU TYPE SELECTION | |||
Type | JP25 | JP28 | JP30 |
CX486S (WB) | Closed | Open | Pins 5 & 6 closed |
CX486S (WT) | Closed | Open | Pins 5 & 6 closed |
CX486S2 (WB) | Closed | Open | Pins 5 & 6 closed |
CX486S2 (WT) | Closed | Open | Pins 5 & 6 closed |
80486SX (PQFP) | Open | Open | Open |
80486SX (PGA) | Closed | Open | Pins 5 & 6 closed |
80487SX | Closed | Open | Pins 1 & 2, 4 & 5, 6 & 7 closed |
CX486DX (WB) | Closed | Open | Pins 2 & 3, 4 & 5, 6 & 7 closed |
CX486DX (WT) | Closed | Open | Pins 2 & 3, 4 & 5, 6 & 7 closed |
CX486DX2 (WB) | Closed | Open | Pins 2 & 3, 4 & 5, 6 & 7 closed |
CX486DX2 (WT) | Closed | Open | Pins 2 & 3, 4 & 5, 6 & 7 closed |
80486DX | Closed | Open | Pins 2 & 3, 4 & 5, 6 & 7 closed |
80486DX2 | Closed | Open | Pins 2 & 3, 4 & 5, 6 & 7 closed |
P24T | Closed | Open | Pins 1 & 2, 4 & 5, 6 & 7 closed |
CPU TYPE SELECTION (CON’T) | ||||
Type | JP70 | JP72 | JP80 | JP120 |
CX486S (WB) | Pins 2 & 3 closed | Pins 1 & 2 closed | Pins 2 & 3 closed | Open |
CX486S (WT) | Pins 2 & 3 closed | Pins 1 & 2 closed | Pins 1 & 2 closed | Open |
CX486S2 (WB) | Pins 2 & 3 closed | Pins 1 & 2 closed | Pins 2 & 3 closed | Closed |
CX486S2 (WT) | Pins 2 & 3 closed | Pins 1 & 2 closed | Pins 1 & 2 closed | Closed |
80486SX (PQFP) | Pins 1 & 2 closed | Pins 2 & 3 closed | Pins 1 & 2 closed | Open |
80486SX (PGA) | Pins 1 & 2 closed | Pins 2 & 3 closed | Pins 1 & 2 closed | Open |
80487SX | Pins 1 & 2 closed | Pins 2 & 3 closed | Pins 1 & 2 closed | Open |
CX486DX (WB) | Pins 2 & 3 closed | Pins 1 & 2 closed | Pins 2 & 3 closed | Open |
CX486DX (WT) | Pins 2 & 3 closed | Pins 1 & 2 closed | Pins 1 & 2 closed | Open |
CX486DX2 (WB) | Pins 2 & 3 closed | Pins 1 & 2 closed | Pins 2 & 3 closed | Closed |
CX486DX2 (WT) | Pins 2 & 3 closed | Pins 1 & 2 closed | Pins 1 & 2 closed | Closed |
80486DX | Pins 1 & 2 closed | Pins 2 & 3 closed | Pins 1 & 2 closed | Open |
80486DX2 | Pins 1 & 2 closed | Pins 2 & 3 closed | Pins 1 & 2 closed | Open |
P24T | Pins 1 & 2 closed | Pins 2 & 3 closed | Pins 1 & 2 closed | Open |