CHICONY, INC.
CH-491E
|
Processor |
CX486S/80486SDX/CX487S/80487SX/CX486DX/AM486DX/80486DX/ CX486DX2/AM486DX2/80486DX2/Pentium Overdrive |
|
Processor Speed |
20/25/33/40/50(internal)/50/66(internal)MHz |
|
Chip Set |
Advanced |
|
Max. Onboard DRAM |
64MB |
|
Cache |
32/64/128/256KB |
|
BIOS |
AMI |
|
Dimensions |
220mm x 250mm |
|
I/O Options |
32-bit VESA local bus slots (3) |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J3 |
Speaker |
J7 |
|
Reset switch |
J4 |
Power LED & keylock |
J8 |
|
Turbo switch |
J5 |
32-bit VESA local bus slots |
SL1 - SL3 |
|
Turbo LED |
J6 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
» |
CMOS memory normal operation |
JP1 |
Open |
|
CMOS memory clear |
JP1 |
Closed | |
|
Address strobe delay disabled |
JP7 |
pins 1 & 2 closed | |
|
Address strobe delay enabled |
JP7 |
pins 2 & 3 closed | |
|
» |
PQFP CPU enabled |
JP12 |
Open |
|
PQFP CPU disabled |
JP12 |
Closed | |
|
» |
VGA card select normal card installed |
JP19 |
pins 1 & 2 closed |
|
VGA card select Weitek Power 9000 card installed |
JP19 |
pins 2 & 3 closed | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
1MB |
(4) 256K x 9 |
NONE |
|
1MB |
NONE |
(4) 256K x 9 |
|
2MB |
(4) 256K x 9 |
(4) 256K x 9 |
|
4MB |
(4) 1M x 9 |
NONE |
|
4MB |
NONE |
(4) 1M x 9 |
|
5MB |
(4) 1M x 9 |
(4) 256K x 9 |
|
5MB |
(4) 256K x 9 |
(4) 1M x 9 |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
|
16MB |
NONE |
(4) 4M x 9 |
|
17MB |
(4) 4M x 9 |
(4) 256K x 9 |
|
17MB |
(4) 256K x 9 |
(4) 4M x 9 |
|
20MB |
(4) 4M x 9 |
(4) 1M x 9 |
|
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
64MB |
(4) 16M x 9 |
NONE |
|
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) 16K x 8 or (1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | |||||
|
Size |
JP2 |
JP3 |
JP4 |
JP5 |
JP6 |
|
32KB |
2 & 3 |
2 & 3 |
Open |
Open |
Open |
|
64KB |
1 & 2 |
1 & 2 |
Open |
Open |
Closed |
|
128KB |
2 & 3 |
2 & 3 |
Open |
Closed |
Closed |
|
256KB |
1 & 2 |
1 & 2 |
Closed |
Closed |
Closed |
|
Note: Pins designated should be in the closed position. | |||||
|
CPU TYPE CONFIGURATION | |||||
|
Type |
JP15 |
JP16 |
JP17 |
JP18 |
JP20 |
|
CX486S |
2 & 3 |
Open |
Open |
2 & 3 |
2 & 3 |
|
80486SX |
2 & 3 |
Open |
Open |
2 & 3 |
2 & 3 |
|
CX487S |
1 & 2, 3 & 4 |
1 & 2 |
Open |
1 & 2 |
1 & 2 |
|
80487SX |
1 & 2, 3 & 4 |
2 & 3 |
Open |
2 & 3 |
2 & 3 |
|
CX486DX |
1 & 2, 3 & 4 |
1 & 2 |
Open |
2 & 3 |
2 & 3 |
|
AM80486DX |
1 & 2, 3 & 4 |
1 & 2 |
Open |
2 & 3 |
2 & 3 |
|
80486DX |
1 & 2, 3 & 4 |
1 & 2 |
Open |
2 & 3 |
2 & 3 |
|
CX486DX2 |
1 & 2, 3 & 4 |
1 & 2 |
Closed |
2 & 3 |
2 & 3 |
|
AM486DX2 |
1 & 2, 3 & 4 |
1 & 2 |
Open |
2 & 3 |
2 & 3 |
|
80486DX2 |
1 & 2, 3 & 4 |
1 & 2 |
Open |
2 & 3 |
2 & 3 |
|
P24T |
1 & 2, 3 & 4 |
1 & 2 |
Open |
2 & 3 |
2 & 3 |
|
Note: Pins designated should be in the closed position. | |||||
|
CPU SPEED CONFIGURATION | ||||
|
Speed |
JP8 |
JP9 |
JP10 |
JP11 |
|
20Mhz |
Closed |
Closed |
Closed |
Closed |
|
25MHz |
Open |
Open |
Closed |
Closed |
|
33MHz |
Open |
Open |
Closed |
Open |
|
40MHz |
Open |
Open |
Open |
Closed |
|
50iMHz |
Open |
Open |
Closed |
Closed |
|
50MHz |
Open |
Open |
Open |
Open |
|
66iMHz |
Open |
Open |
Closed |
Open |
|
VL BUS WAIT STATE CONFIGURATION | |
|
Wait states |
JP13 |
|
0 wait states |
Open |
|
1 wait state |
Closed |
|
VL BUS SPEED CONFIGURATION | |
|
CPU speed |
JP14 |
|
<= 33MHz |
Open |
|
> 33MHz |
Closed |