JOINDATA SYSTEMS, INC.
G486PE
|
Processor |
80486SX/80486DX/80486DX2 |
|
Processor Speed |
20/25/33/40/50(internal)/50/66(internal)MHz |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64/128/256/512KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
None |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Speaker |
J4 |
Reset switch |
J9 |
|
Power LED & keylock |
J5 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
| » |
I/O bus speed select normal |
JP1 |
Open |
|
I/O bus speed select slow |
JP1 |
Closed | |
| » |
Monitor type select monochrome |
JP5 |
Open |
|
Monitor type select color |
JP5 |
Closed | |
| » |
Burst mode enabled |
JP7 |
Closed |
|
Burst mode disabled |
JP7 |
Open | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
4MB |
(4) 1M x 9 |
NONE |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
|
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
CACHE CONFIGURATION | |||||
|
Size |
Bank 0 |
Bank 1 |
TAG (U52) |
TAG (U52) |
Dirty Bit(U66) |
|
64KB |
4) 8K x 8 |
4) 8K x 8 |
(1) 8K x 8 |
N/A |
(1) 16K x 1 |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 8K x 8 |
N/A |
(1) 16K x 1 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 8K x 8 |
(1) 8K x 8 |
(1) 16K x 1 |
|
512KB |
(4) 128K x 8 |
NONE |
(1) 32K x 8 |
N/A |
(1) 64K x 1 |
|
Note:You may use a (1) 64K x 1 at U66 for all Cache SRAM sizes . | |||||
|
CACHE JUMPER CONFIGURATION | |||||||
|
Size |
JP6 |
JP11 |
JP12 |
JP13 |
JP14 |
JP15 |
JP16 |
|
64KB |
2 & 3 |
Open |
Open |
Open |
Open |
Open |
Open |
|
128KB |
1 & 2 |
Open |
Open |
Closed |
Open |
Closed |
Open |
|
256KB |
2 & 3 |
Open |
Closed |
Closed |
Closed |
Closed |
Open |
|
512KB |
1 & 2 |
Closed |
Closed |
Closed |
Closed |
Closed |
Closed |
|
Note:Pins designated should be in the closed position. | |||||||
|
CPU TYPE CONFIGURATION | ||||||
|
Type |
OSC1 |
JP2 |
JP3 |
JP8 |
JP9 |
JP10 |
|
80486DX2- 50 MHz |
50MHz |
Closed |
Closed |
1 & 2, 3 & 4 |
2 & 3 |
1 & 2 |
|
80486DX2- 50 MHz |
25MHz |
Closed |
Closed |
1 & 2, 3 & 4 |
1 & 2 |
1 & 2 |
|
80486DX- 50 MHz |
50MHz |
Closed |
Closed |
1 & 2, 3 & 4 |
1 & 2 |
1 & 2 |
|
80486DX- 33 MHz |
66MHz |
Closed |
Open |
1 & 2, 3 & 4 |
2 & 3 |
1 & 2 |
|
80486DX- 33 MHz |
33MHz |
Closed |
Open |
1 & 2, 3 & 4 |
1 & 2 |
1 & 2 |
|
80486DX- 25 MHz |
50MHz |
Open |
Open |
1 & 2, 3 & 4 |
2 & 3 |
1 & 2 |
|
80486DX- 25 MHz |
25MHz |
Open |
Open |
1 & 2, 3 & 4 |
1 & 2 |
1 & 2 |
|
80486SX- 25 MHz |
50MHz |
Open |
Open |
2 & 3 |
2 & 3 |
Open |
|
80486SX- 25 MHz |
25MHz |
Open |
Open |
2 & 3 |
1 & 2 |
Open |
|
80486SX- 20 MHz |
40MHz |
Open |
Open |
2 & 3 |
2 & 3 |
Open |
|
80486SX- 20 MHz |
20MHz |
Open |
Open |
2 & 3 |
1 & 2 |
Open |
|
Note:Pins designated should be in the closed position. | ||||||