SPRING CIRCLE COMPUTER, INC.
MDX340C/FOREX386
Processor |
80386DX |
Processor Speed |
33/40MHz |
Chip Set |
Forex |
Max. Onboard DRAM |
32MB |
Cache |
32/64/128KB |
BIOS |
AMI |
Dimensions |
330mm x 218mm |
I/O Options |
32-bit external memory card slot |
NPU Options |
80387/3167 |
CONNECTIONS | |||
Purpose |
Location |
Purpose |
Location |
External battery |
JP2 |
Speaker |
JP10 |
Turbo LED |
JP7 |
Turbo switch |
JP11 |
Reset switch |
JP8 |
32-bit external memory card |
S1 |
Power LED & keylock |
JP9 |
USER CONFIGURABLE SETTINGS | |||
Function |
Jumper |
Position | |
» |
Monitor type select color |
JP3 |
Open |
Monitor type select monochrome |
JP3 |
Closed | |
» |
NPU mode select synchronous with CPU |
JP5 |
pins 1 & 2 closed |
NPU mode select synchronous with oscillator installed at Y1 |
JP5 |
pins 2 & 3 closed | |
» |
Factory configured - do not alter |
JP6 |
N/A |
» |
External battery select 6.0VDC |
JP200 |
Open |
External battery select 3.6VDC |
JP200 |
Closed | |
» |
CMOS memory normal operation |
JP202 |
Open |
CMOS memory clear |
JP202 |
Closed |
DRAM CONFIGURATION | ||||
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
1MB |
(4) 256K x 9 |
NONE |
NONE |
NONE |
2MB |
(4) 256K x 9 |
(4) 256K x 9 |
NONE |
NONE |
4MB |
(4) 1M x 9 |
NONE |
NONE |
NONE |
5MB |
(4) 256K x 9 |
(4) 1M x 9 |
NONE |
NONE |
6MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 1M x 9 |
NONE |
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
NONE |
9MB |
(4) 256K x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
12MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
16MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
16MB |
(4) 4M x 9 |
NONE |
NONE |
NONE |
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
NONE |
NONE |
24MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 4M x 9 |
NONE |
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
NONE |
36MB |
(4) 1M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
48MB |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
64MB |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
Note:Banks 2 & 3 are used when a 32-bit external memory card is installed. |
CACHE CONFIGURATION | ||||
Size |
Bank 0 |
Bank 1 |
Tag (U15) |
Tag (U16) |
32KB |
(4) 8K x 8 |
NONE |
(1) 8K x 8 |
NONE |
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 8K x 8 |
(1) 8K x 8 |
128KB |
(4) 32K x 8 |
NONE |
(1) 32K x 8 |
NONE |
CACHE JUMPER CONFIGURATION | |
Size |
JP6 |
32KB |
pins 1 & 2 closed |
64KB |
pins 2 & 3 closed |
128KB |
pins 2 & 3 closed |