JOINDATA SYSTEMS, INC.
G386SX/20
Processor | 80386SX |
Processor Speed | 16/20MHz |
Chip Set | Intel |
Max. Onboard DRAM | 16MB |
SRAM Cache | None |
BIOS | AMI |
Dimensions | 330.2mm x 218.4mm |
I/O Options | None |
NPU Options | 80387SX |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
External battery | J2/pins 1 & 4 | Turbo switch | J20 |
Internal battery | J2/pins 2 & 4 | Turbo LED | J21 |
Power LED & keylock | J18 | Reset switch | J22 |
Speaker | J19 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | CMOS memory normal operation | J2 | pins 3 & 4 open |
CMOS memory clear | J2 | pins 3 & 4 closed | |
» | Monitor type select color | JP1 | closed |
Monitor type select monochrome | JP1 | open | |
» | NPU disabled | JP4 | pins 2 & 3 closed |
NPU enabled | JP4 | pins 1 & 2 closed | |
Note:J2/pin 4 is also used as ground for internal and external battery. |
DRAM CONFIGURATION | ||||||
Size | SIMM | Location | DIP | Location | Parity | Location |
512KB | (2) 256K x 9 | Bank 0 | NONE | NONE | NONE | NONE |
1MB | (4) 256K x 9 | Banks 0 & 1 | NONE | NONE | NONE | NONE |
1.5MB | (4) 256K x 9 | Banks 0 & 1 | (4) 44256 | Bank 4 | (2) 41256 | P-4 |
2MB | (4) 256K x 9 | Banks 0 & 1 | (8) 44256 | Banks 4 & 5 | (4) 41256 | P-4 & P-5 |
2MB | (2) 1M x 9 | Bank 0 | NONE | NONE | NONE | NONE |
2.5MB | (2) 256K x 9 (2) 1M x 9 | Bank 0 Bank 1 | NONE | NONE | NONE | NONE |
3MB | (4) 256K x 9 | Banks 0 & 1 | (16) 411000 | Bank 2 | (2) 411000 | P-2 |
4MB | (4) 1M x 9 | Banks 0 & 1 | NONE | NONE | NONE | NONE |
4.5MB | (4) 1M x 9 | Banks 0 & 1 | (4) 44256 | Bank 4 | (2) 41256 | P-4 |
5MB | (4) 256K x 9 | Banks 0 & 1 | (32) 411000 | Banks 2 & 3 | (4) 411000 | P-2 & P-3 |
6MB | (4) 1M x 9 | Banks 0 & 1 | (16) 411000 | Bank 2 | (2) 411000 | P-2 |
8MB | (4) 1M x 9 | Banks 0 & 1 | (32) 411000 | Banks 2 & 3 | (4) 411000 | P-2 & P-3 |
8MB | (2) 4M x 9 | Bank 0 | NONE | NONE | NONE | NONE |
8.5MB | (2) 256K x 9 (2) 4M x 9 | Bank 0 Bank 1 | NONE | NONE | NONE | NONE |
9MB | (2) 256K x 9 (2) 4M x 9 | Bank 0 Bank 1 | (4) 44256 | Bank 4 | (2) 41256 | P-4 |
10MB | (2) 1M x 9 (2) 4M x 9 | Bank 0 Bank 1 | NONE | NONE | NONE | NONE |
12MB | (2) 1M x 9 (2) 4M x 9 | Bank 0 Bank 1 | (16) 411000 | Bank 2 | (2) 411000 | P-2 |
16MB | (4) 4M x 9 | Bank 0 | NONE | NONE | NONE | NONE |