TYAN COMPUTER CORPORATION
S1437
|
Processor |
80486SX/80487SX/80486DX |
|
Processor Speed |
20/25/33/50MHz |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
256MB |
|
Cache |
64/128/256/512KB |
|
BIOS |
AMI/Phoenix |
|
Dimensions |
309mm x 331mm |
|
I/O Options |
None |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Speaker |
J4 |
Turbo LED |
J6 |
|
Power LED & Keylock |
J5 |
Reset switch |
S9 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
External BCLK buffering 486DX (33/50MHz) |
JP1 |
pins 1 & 2 closed | |
|
External BCLK buffering 486SX (20/25MHz) / 487SX |
JP1 |
pins 2 & 3 closed | |
|
Snooping/Flush 20MHz CPU |
JP8 |
closed | |
|
Snooping/Flush 25/33/40/50 MHz CPU |
JP8 |
open | |
|
Monitor type select monochrome |
JP9 |
open | |
|
Monitor type select color |
JP9 |
closed | |
|
CPU speed select OSC/1 |
JP12 |
pins 1 & 2 closed | |
|
CPU speed select OSC/2 |
JP12 |
pins 2 & 3 closed | |
|
RTC/CMOS type select DS1287/1287A |
JP13, JP14 & JP15 |
pins 1 & 2 closed | |
|
RTC/CMOS type select DS1387/1488 |
JP13, JP14 & JP15 |
pins 2 & 3 closed | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
4MB |
(4) 1M x 9 |
NONE |
NONE |
NONE |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
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 |
|
28MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 4M x 9 |
(4) 1M x 9 |
|
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 |
|
40MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
|
48MB |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
|
52MB |
(4) 1M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
|
64MB |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
|
64MB |
(4) 16M x 9 |
NONE |
NONE |
NONE |
|
128MB |
(4) 16M x 9 |
(4) 16M x 9 |
NONE |
NONE |
|
192MB |
(4) 16M x 9 |
(4) 16M x 9 |
(4) 16M x 9 |
NONE |
|
256MB |
(4) 16M x 9 |
(4) 16M x 9 |
(4) 16M x 9 |
(4) 16M x 9 |
|
CACHE CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
|
128KB |
(4) 32K x 8 |
NONE |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
|
512KB |
(4) 128K x 8 |
NONE |
|
CACHE TAG CONFIGURATION | |||||
|
Size |
U54 |
U55 |
U56 |
U71 |
U72 (Dirty bit) |
|
64KB |
(1) 64K x 1 |
(1) 8K x 1 |
NONE |
(1) 64K x 1 |
(1) 16K x 1 or (1) 64K x 1 |
|
128KB |
(1) 64K x 1 |
(1) 8K x 1 |
NONE |
(1) 64K x 1 |
(1) 16K x 1 or (1) 64K x 1 |
|
256KB |
(1) 64K x 1 |
(1) 8K x 1 |
(1) 8K x 1 |
(1) 64K x 1 |
(1) 16K x 1 or (1) 64K x 1 |
|
512KB |
(1) 64K x 1 |
(1) 32K x 1 |
NONE |
(1) 64K x 1 |
(1) 64K x 1 |
|
CACHE JUMPER CONFIGURATION | |||||||
|
Size |
JP2 |
JP3 |
JP4 |
JP5 |
JP16 |
JP17 |
JP18 |
|
64KB |
2 & 3 |
Open |
Open |
Open |
Open |
Open |
Open |
|
128KB |
1 & 2 |
Closed |
Open |
Open |
Closed |
Open |
Open |
|
256KB |
2 & 3 |
Closed |
Closed |
Open |
Closed |
Open |
Closed |
|
512KB |
1 & 2 |
Closed |
Closed |
Closed |
Closed |
Closed |
Closed |
|
Note: Pins designated should be in the closed position. | |||||||
|
CPU TYPE CONFIGURATION | ||
|
Type |
J10 |
J11 |
|
80486SX |
pins 2 & 3 closed |
open |
|
80487SX |
pins 1 & 2 and 3 & 4 closed |
pins 1 & 2 closed |
|
80486DX |
pins 1 & 2 and 3 & 4 closed |
pins 2 & 3 closed |
|
EBC SPEED CONFIGURATION | ||
|
Size |
JP6 |
JP7 |
|
20MHz |
Open |
Open |
|
25MHz |
Open |
Open |
|
33MHz |
Open |
Closed |
|
40MHz |
Closed |
Open |
|
50MHz |
Closed |
Closed |