SEE-THRU DATA SYSTEMS, LTD.
STO98C
|
Processor |
80386DX/CX486DLC/80486SX/80487SX/80486DX/80486DX2 |
|
Processor Speed |
20/25/33/40/50(internal)/50/66(internal) |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
32MB |
|
SRAM Cache |
64/128/256KB |
|
BIOS |
MR |
|
Dimensions |
220mm x 220mm |
|
I/O Options |
None |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J9 |
Turbo switch |
JP12 |
|
Power LED & keylock |
J18 |
Turbo LED |
JP13 |
|
Speaker |
JP11 |
Reset switch |
S1 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
Monitor type select monochrome |
JP1 |
open | |
|
Monitor type select color |
JP1 |
closed | |
|
CMOS memory normal operation |
JP2 |
pins 2 & 3 closed | |
|
CMOS memory clear |
JP2 |
pins 1 & 2 closed | |
|
SRAM CONFIGURATION | |||||
|
Size |
Cache |
Location |
TAG (U31) |
TAG (U32) |
Dirty Bit (U42) |
|
64KB |
(8) 8K x 8 |
Banks 0 & 1 |
NONE |
(1) 8K x 8 |
(1) 16K x 4 |
|
128KB |
(4) 32K x 8 |
Bank 0 |
NONE |
(1) 8K x 8 |
(1) 16K x 4 |
|
128KB |
(4) 32K x 8 |
Bank 0 |
NONE |
(1) 32K x 8 |
(1) 16K x 4 |
|
256KB |
(8) 32K x 8 |
Banks 0 & 1 |
NONE |
(1) 32K x 8 |
(1) 16K x 4 |
|
256KB |
(8) 32K x 8 |
Banks 0 & 1 |
(1) 8K x 8 |
(1) 8K x 8 |
(1) 16K x 4 |
|
SRAM JUMPER CONFIGURATION | ||||
|
Size |
JP3 |
JP4 |
JP7 |
JP8 |
|
64KB |
pins 2 & 3 closed |
pins 2 & 3 closed |
open |
open |
|
128KB |
pins 1 & 2 closed |
pins 1 & 2 closed |
closed |
open |
|
128KB |
pins 1 & 2 closed |
pins 1 & 2 closed |
closed |
open |
|
256KB |
pins 2 & 3 closed |
pins 2 & 3 closed |
closed |
open |
|
256KB 1 |
pins 2 & 3 closed |
pins 2 & 3 closed |
open |
closed |
|
Note 1 :Jumpers are in this position only when using (2) 8K x 8 in TAG sockets U31 & U32. | ||||
|
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 |
|
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
Note:8 or 9-bit SIMMs can be used. | ||
|
CPU SPEED CONFIGURATION | ||||
|
Speed |
JF0 |
JF1 |
JP6 |
JP10 |
|
20MHz |
closed |
closed |
pins 2 & 3 closed |
open |
|
25MHz |
open |
closed |
pins 2 & 3 closed |
open |
|
33MHz(386/486DLC) |
closed |
open |
pins 2 & 3 closed |
pins 1 & 2 closed |
|
33MHz(486) |
closed |
open |
pins 2 & 3 closed |
open |
|
40MHz |
open |
open |
pins 2 & 3 closed |
pins 1 & 2 closed |
|
50MHz (internal) |
open |
closed |
pins 2 & 3 closed |
open |
|
50MHz |
open |
closed |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
66MHz (internal) |
closed |
open |
pins 2 & 3 closed |
open |
|
CPU TYPE CONFIGURATION | ||||||
|
Type |
JP5 |
JP9 |
JP14 |
JP15 |
JP16 |
JP17 |
|
80386DX |
1 & 2, 3 & 4 |
1 & 2, 3 & 4 |
1 & 2 |
1 & 2 |
2 & 3, 4 & 5 |
closed |
|
CX486DLC |
1 & 2, 3 & 4 |
1 & 2, 3 & 4 |
1 & 2 |
1 & 2 |
2 & 3, 4 & 5 |
closed |
|
80486SX |
2 & 3 |
open |
1 & 2 |
2 & 3 |
2 & 3, 4 & 5 |
open |
|
80487SX |
1 & 2, 3 & 4 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3, 4 & 5 |
open |
|
80486DX |
1 & 2, 3 & 4 |
1 & 2 |
2 & 3 |
2 & 3 |
2 & 3, 4 & 5 |
open |
|
80486DX2 |
1 & 2, 3 & 4 |
1 & 2 |
2 & 3 |
2 & 3 |
2 & 3, 4 & 5 |
open |
|
Note:The location of JP15 is unknown. Pins designated should be in the closed position | ||||||