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 |