YOUNG MICRO SYSTEMS, INC.
CROSS 486G-VLB
Processor | SL80486SX/80486SX/SL80486DX/80486DX/80486DX2/80486DX4/P24D/ Pentium Overdrive |
Processor Speed | 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz |
Chip Set | OPTI |
Max. Onboard DRAM | 128MB |
Cache | 64/128/256/512KB |
BIOS | AMI |
Dimensions | 254mm x 218mm |
I/O Options | 32-bit VESA local bus slots (3), green PC |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Turbo switch | J1 | Reset switch | J4 |
Power LED & keylock | J2 | Turbo LED | J5 |
Speaker | J3 | 32-bit VESA local bus slots | SL1 - SL3 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Factory configured - do not alter | JP1 | Open |
Factory configured - do not alter | JP2 | pins 1 & 2 closed | |
» | Monitor type select color | JP3 | Closed |
Monitor type select monochrome | JP3 | Open | |
» | Factory configured - do not alter | JP8 | Open |
» | Factory configured - do not alter | JP11 | Closed |
» | Factory configured - do not alter | JP12 | Open |
» | Factory configured - do not alter | JP13 | Open |
» | Factory configured - do not alter | JP14 | Open |
» | Factory configured - do not alter | JP15 | Open |
» | Factory configured - do not alter | JP16 | Open |
» | Factory configured - do not alter | JP17 | Open |
» | Factory configured - do not alter | JP18 | Open |
» | Factory configured - do not alter | JP20 | pins 2 & 3 closed |
» | Factory configured - do not alter | JP21 | pins 1 & 2 closed |
» | Factory configured - do not alter | JP22 | Open |
» | Factory configured - do not alter | JP25 | Open |
» | Factory configured - do not alter | JP28 | pins 1 & 2 closed |
» | Factory configured - do not alter | JP30 | Open |
» | Factory configured - do not alter | JP31 | pins 2 & 3 closed |
» | Factory configured - do not alter | JP38 | Open |
» | Factory configured - do not alter | JP39 | Open |
» | Factory configured - do not alter | JP40 | Closed |
DRAM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
1MB | (1) 256K x 36 | NONE | NONE | NONE |
4MB | (1) 512K x 36 | (1) 512K x 36 | NONE | NONE |
4MB | (1) 1M x 36 | NONE | NONE | NONE |
8MB | (1) 1M x 36 | (1) 1M x 36 | NONE | NONE |
8MB | (1) 2M x 36 | NONE | NONE | NONE |
16MB | (1) 4M x 36 | NONE | NONE | NONE |
16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 |
32MB | (1) 4M x 36 | (1) 4M x 36 | NONE | NONE |
32MB | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x 36 |
64MB | (1) 8M x 36 | (1) 8M x 36 | NONE | NONE |
64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 |
128MB | (1) 8M x 36 | (1) 8M x 36 | (1) 8M x 36 | (1) 8M x 36 |
CACHE CONFIGURATION | |||
Size | Bank 0 | Bank 1 | TAG |
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 |
512KB | (4) 128K x 8 | NONE | (1) 32K x 8 |
CACHE JUMPER CONFIGURATION | ||||||
Size | JP32 | JP33 | JP34 | JP35 | JP36 | JP37 |
64KB | Open | 2 & 3 | 2 & 3 | Open | Open | Open |
128KB | Open | 2 & 3 | 1 & 2 | Open | Closed | Open |
256KB | Open | 2 & 3 | 2 & 3 | Closed | Closed | Open |
512KB | Closed | Open | 1 & 2 | Closed | Closed | Closed |
Note: Pins designated should be in the closed position. |
CPU TYPE CONFIGURATION | ||||||
Type | JP9 | JP10 | JP19 | JP29 | JP106 | JP107 |
SL80486SX | Closed | Closed | Open | 2 & 3 | Open | Open |
80486SX | Closed | Closed | Open | 2 & 3 | Open | Open |
SL80486DX | Closed | Closed | 1 & 2 | 1 & 2, 3 & 4 | Open | Open |
80486DX | Closed | Closed | 1 & 2 | 1 & 2, 3 & 4 | Open | Open |
80486DX2 | Closed | Closed | 1 & 2 | 1 & 2, 3 & 4 | Open | Open |
80486DX4 | Open | Open | 1 & 2 | 1 & 2, 3 & 4 | Closed | Closed |
P24D | Closed | Closed | 1 & 2 | 1 & 2, 3 & 4 | Open | Open |
P24T | Open | Open | 1 & 2 | 1 & 2, 3 & 4 | Closed | Closed |
Note: Pins designated should be in the closed position. |
CPU SPEED CONFIGURATION | |||
Speed | JP5 | JP6 | JP7 |
25MHz | Open | Open | Closed |
33MHz | Closed | Open | Closed |
40MHz | Open | Closed | Closed |
50iMHz | Open | Open | Closed |
50MHz | Closed | Closed | Closed |
66iMHz | Closed | Open | Closed |
75iMHz | Open | Open | Closed |
100iMHz | Closed | Open | Closed |
CPU SPEED CONFIGURATION (80486DX4 ONLY) | |
Speed | JP26 |
2x | pins 1 & 2 closed |
2.5x | pins 2 & 3 closed |
3x | Open |
VESA WAIT STATE CONFIGURATION | |
Wait states | JP23 |
0 wait states | Open |
1 wait state | Closed |
BUS SPEED CONFIGURATION | |
CPU speed | JP24 |
<= 33MHz | Open |
> 33MHz | Closed |
BIOS CONFIGURATION | ||
Setting | JP4 | JP27 |
CMOS memory normal operation | pins 2 & 3 closed | pins 1 & 2 closed |
CMOS memory clear | pins 1 & 2 closed | pins 2 & 3 closed |