NORTHGATE COMPUTER SYSTEMS, INC.
SLIMLINE CACHE 386SX
|
Processor |
80386SX |
|
Processor Speed |
16/20MHz |
|
Chip Set |
VLSI |
|
Max. Onboard DRAM |
8MB |
|
Cache |
64KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
Floppy drive interface, IDE interface, parallel port, serial ports (2), VGA port |
|
NPU Options |
80387SX |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
VGA port |
J1 |
Serial port 2 |
J10 |
|
Turbo LED |
J3 |
Parallel port LPT1 |
J15 |
|
Power LED & keylock |
J4 |
Floppy drive interface |
J16 |
|
Speaker |
J5 |
IDE interface |
J17 |
|
Reset switch |
J6 |
Riser card |
R1 |
|
IDE interface LED |
J8 |
Turbo switch |
W6 |
|
Serial port 1 |
J9 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
| » |
Factory configured - do not alter |
SW1/1 & 2 |
Open |
| » |
Factory configured - do not alter |
SW2/3 & 4 |
Open |
| » |
Factory configured - do not alter |
SW21 & 2 |
N/A |
| » |
Floppy drive interface interrupt (IRQ6) enabled |
SW2/pins 11 & 12 |
Open |
|
Floppy drive interface interrupt (IRQ6) disabled |
SW2/pins 11 & 12 |
Closed | |
| » |
Floppy drive interface DMARQ2 enabled |
SW2/pins 13 & 14 |
Open |
|
Floppy drive interface DMARQ2 disabled |
SW2/pins 13 & 14 |
Closed | |
| » |
Floppy drive interface DACK2 enabled |
SW2/pins 15 & 16 |
Open |
|
Floppy drive interface DACK2 disabled |
SW2/pins 15 & 16 |
Closed | |
| » |
Floppy drive interface enabled |
SW3/pins 1 & 2 |
Open |
|
Floppy drive interface disabled |
SW3/pins 1 & 2 |
Closed | |
| » |
Factory configured - do not alter |
SW3/pins 5 & 6 |
Open |
| » |
Factory configured - do not alter |
W1 |
Closed |
| » |
Cache enabled |
W2 |
Closed |
|
Cache disabled |
W2 |
Open | |
| » |
Memory (8-bit) speed select 4 wait states |
W3 |
pins 2 & 3 closed |
|
Memory (8-bit) speed select 6 wait states |
W3 |
pins 1 & 2 closed | |
| » |
Memory (16-bit) speed select 1 wait states |
W4 |
pins 2 & 3 closed |
|
Memory (16-bit) speed select 2 wait states |
W4 |
pins 1 & 2 closed | |
| » |
BIOS type select 27256 |
W5 |
pins 2 & 3 closed |
|
BIOS type select 27512 |
W5 |
pins 1 & 2 closed | |
|
Monitor type select monochrome |
W7 |
pins 1 & 2 closed | |
|
Monitor type select color |
W7 |
pins 2 & 3 closed | |
| » |
Parallel port (J2) mode select output only |
W11 |
pins 2 & 3 closed |
|
Parallel port (J2) mode select bi-directional |
W11 |
pins 1 & 2 closed | |
| » |
Floppy drive write precomp select standard |
W17 |
pins 2 & 3 closed |
|
Floppy drive write precomp select two speed drive |
W17 |
pins 1 & 2 closed | |
| » |
Floppy drive type select standard |
W18 |
pins 1 & 2 closed |
|
Floppy drive type select two speed drive |
W18 |
pins 2 & 3 closed | |
| » |
IDE interface enabled |
W20 |
Open |
|
IDE interface disabled |
W20 |
Closed | |
| » |
IDE interface interrupt (IRQ4) enabled |
W21 |
Open |
|
IDE interface interrupt disabled |
W21 |
Closed | |
|
DRAM CONFIGURATION | ||||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
Socket U71 |
Socket U76 |
|
512KB |
(2) 256K x 9 |
NONE |
NONE |
NONE |
PAL B |
PAL B |
|
1MB |
(2) 256K x 9 |
(2) 256K x 9 |
NONE |
NONE |
PAL B |
PAL B |
|
2MB |
(2) 1M x 9 |
NONE |
NONE |
NONE |
PAL A |
PAL A |
|
3MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 1M x 9 |
NONE |
PAL B |
PAL B |
|
4MB |
(2) 1M x 9 |
(2) 1M x 9 |
NONE |
NONE |
PAL A |
PAL A |
|
5MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
PAL B |
PAL B |
|
6MB |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
NONE |
PAL A |
PAL A |
|
8MB |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
PAL A |
PAL A |
|
DRAM JUMPER/SWITCH CONFIGURATION | |||||
|
Size |
SW1/5 & 6 |
SW1/7 & 8 |
SW1/9 & 10 |
W8 |
W9 |
|
512KB |
Open |
Open |
Open |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
1MB |
Open |
Closed |
Open |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
2MB |
Closed |
Open |
Open |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
3MB |
Closed |
Open |
Open |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
4MB |
Open |
Open |
Open |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
5MB |
Open |
Closed |
Open |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
6MB |
Closed |
Open |
Open |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
8MB |
Closed |
Open |
Open |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
Note:DRAM jumper configurations correlate directly to memory configurations. | |||||
|
CACHE CONFIGURATION | ||
|
Size |
Bank 0 |
TAG |
|
64KB |
(2) 64K x 4 |
(1) 8K x 8 |
|
Note:Arrangement of Cache/TAG unverified. | ||
|
PARALLEL PORT CONFIGURATION | ||||||
|
LPT# |
Interrupt |
Address |
SW2/7 & 8 |
SW2/9 & 10 |
SW3/9 & 10 |
SW3/11 & 12 |
|
LPT1 |
IRQ7 |
378h |
Open |
Closed |
Open |
Open |
|
LPT1 |
IRQ7 |
3BCh |
Open |
Closed |
Open |
Closed |
|
LPT2 |
IRQ5 |
278h |
Closed |
Open |
Closed |
Open |
|
Disabled |
N/A |
N/A |
Open |
Open |
Closed |
Closed |
|
SERIAL PORT 1 CONFIGURATION | ||
|
Setting |
SW2/3 & 4 |
SW3/3 & 4 |
|
COM2/IRQ3 |
Closed |
Open |
|
Disabled |
Open |
Closed |
|
SERIAL PORT 2 CONFIGURATION | ||
|
Setting |
SW2/5 &6 |
SW3/7 & 8 |
|
COM1/IRQ4 |
Closed |
Open |
|
Disabled |
Open |
Closed |
|
ON BOARD VIDEO CONFIGURATION | |
|
Size |
SW5 |
|
Enabled |
pins 1 & 2, 3 & 4, 5 & 6 closed & pins 7 & 8 open |
|
Disabled |
pins 1 & 2, 3 & 4, 5 & 6 open & pins 7 & 8 closed |