UPDATE TECHNOLOGY, INC.
VL-BUS MAINBOARD
|
Processor |
80486SX/80487SX/80486DX/ODP486SX/80486DX2 |
|
Processor Speed |
20/25/33/50(internal)/50/66(internal)MHz |
|
Chip Set |
UNI |
|
Max. Onboard DRAM |
32MB |
|
SRAM Cache |
32/64/128/256KB |
|
BIOS |
AMI |
|
Dimensions |
254mm x 218mm |
|
I/O Options |
32-bit VESA local-bus card slots (3) |
|
NPU Options |
None |
|
CONNECTIONS |
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|
Purpose |
Location |
Purpose |
Location |
|
Turbo switch |
J4 |
External battery |
J8 |
|
Turbo LED |
J5 |
Reset switch |
J10 |
|
Speaker |
J6 |
32-bit VESA local-bus cards (3) |
S1 - S3 |
|
Power LED & keylock |
J7 |
|
|
|
USER CONFIGURABLE SETTINGS |
|||
|
Function |
Jumper |
Position |
|
|
|
Monitor type select color |
J11 |
closed |
|
|
Monitor type select monochrome |
J11 |
open |
|
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CMOS memory normal operation (internal battery) |
JP2 |
pins 1 & 2 closed |
|
|
CMOS memory normal operation (external battery) |
JP2 |
open |
|
|
CMOS memory clear |
JP2 |
pins 2 & 3 closed |
|
|
VESA local bus speed select (CPU £ 33MHz) |
JP19 |
closed |
|
|
VESA local bus speed select (CPU > 33MHz) |
JP19 |
open |
|
|
VESA local bus wait states select 0 (CPU >33MHz) |
JP20 |
closed |
|
|
VESA local bus wait state select 1 (CPU £ 33MHz) |
JP20 |
open |
|
|
VESA local bus speed select CPU/1 |
JP43 |
pins 1 & 2 closed |
|
|
VESA local bus speed select CPU/2 |
JP43 |
pins 2 & 3 closed |
|
|
CPU speed select £ 33MHz |
JP44 |
pins 2 & 3 closed |
|
|
CPU speed select > 33MHz |
JP44 |
pins 1 & 2 closed |
|
CPU TYPE CONFIGURATION |
|
|
CPU |
J4 |
|
80486DX2 |
pins 1 & 2, 4 & 5, and 6 & 7 closed |
|
ODP487SX |
pins 2 & 3, 4 & 5, and 6 & 7 closed |
|
80486DX |
pins 1 & 2, 4 & 5, and 6 & 7 closed |
|
80487SX |
pins 5 & 6 closed |
|
80486SX |
pins 2 & 3, 4 & 5, and 6 & 7 closed |
|
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 |
|
SRAM CONFIGURATION |
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|
Size |
Cache |
Location |
TAG |
|
32KB |
(4) 8K x 8 |
Bank 0 |
(1) 8K x 8 |
|
64KB |
(8) 8K x 8 |
Banks 0 & 1 |
(1) 8K x 8 |
|
128KB |
(4) 32K x 8 |
Bank 0 |
(1) 32K x 8 |
|
256KB |
(8) 32K x 8 |
Banks 0 & 1 |
(1) 32K x 8 |
|
SRAM JUMPER CONFIGURATION |
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|
Size |
J17 |
J18 |
J19 |
J20 |
|
32KB |
open |
open |
open |
pins 2 & 3 closed |
|
64KB |
open |
closed |
open |
pins 1 & 2 closed |
|
128KB |
open |
closed |
closed |
pins 1 & 2 and 3 & 4 closed |
|
256KB |
closed |
closed |
closed |
pins 1 & 2 and 4 & 5 closed |