J-BOND COMPUTER SYSTEMS CORPORATION
486 CACHE
|
Processor |
80486SX/80487SX/80486DX/ODP486SX/80486DX2 |
|
Processor Speed |
20/25/33/40/50(internal)/50/66(internal)MHz |
|
Chip Set |
ETEQ |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64/256KB |
|
BIOS |
AMI |
|
Dimensions |
221mm x 254mm |
|
I/O Options |
None |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
BATT |
Reset switch |
RST |
|
Power LED & keylock |
KEYLC |
Speaker |
SPK |
|
Turbo LED |
LED |
Turbo switch |
TBS |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
CPU speed select switchable at keyboard |
JP1 |
Closed | |
|
CPU speed select switchable at turbo switch |
JP1 |
Open | |
|
Battery type select internal |
JP7 |
Closed | |
|
Battery type select external |
JP7 |
Open | |
|
CPU speed select iOSC/2 |
JP50 |
pins 2 & 3 closed | |
|
CPU speed select iOSC/1 |
JP50 |
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 |
|
17MB |
(4) 4M x 9 |
(4) 256K x 9 |
|
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
CACHE CONFIGURATION | ||
|
Size |
Bank 0 |
TAG |
|
64KB |
(8) 8K x 8 |
(1) 8K x 8 |
|
256KB |
(8) 32K x 8 |
(1) 32K x 8 |
|
CACHEJUMPER CONFIGURATION | ||||
|
Size |
JP2 |
JP3 |
JP4 |
JP5 |
|
64KB |
Open |
pins 1 & 2 closed |
Open |
pins 1 & 2 closed |
|
256KB |
Closed |
pins 2 & 3 closed |
Closed |
pins 2 & 3 closed |
|
CPU TYPE CONFIGURATION | |||||
|
Type |
JX1 |
JX2 |
JX3 |
JX4 |
JX5 |
|
80486SX |
Open |
Open |
Open |
Closed |
Open |
|
80487SX |
Open |
Closed |
Closed |
Open |
Closed |
|
ODP486SX |
Open |
Closed |
Closed |
Open |
Closed |
|
80486DX |
Closed |
Open |
Closed |
Open |
Closed |
|
80486DX2 |
Closed |
Open |
Closed |
Open |
Closed |