ARNOS INSTRUMENTS & COMPUTER SYSTEMS COMPANY, INC.
486-25C/33C
|
Processor |
80486DX |
|
Processor Speed |
25/33MHz |
|
Chip Set |
None |
|
Max. Onboard DRAM |
32MB |
|
Cache |
128KB |
|
BIOS |
Phoenix |
|
Dimensions |
355mm x 304mm |
|
I/O Options |
None |
|
NPU Options |
4167 |
|
CONNECTIONS |
|||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
X4 |
Status display |
X15 |
|
Turbo switch |
X12 |
Reset switch |
X16 |
|
Speaker |
X13 |
Power LED & keylock |
X17 |
|
Turbo LED |
X14 |
|
|
|
USER CONFIGURABLE SETTINGS |
|||
|
Function |
Jumper/Switch |
Position |
|
|
» |
Factory configured - do not alter |
S1 |
pins 1 & 2 closed |
|
» |
Battery installed < 5VDC |
S2 |
pins 1 & 2 closed |
|
|
Battery installed > 5VDC |
S2 |
pins 2 & 3 closed |
|
» |
CPU speed select switchable at keyboard |
S3 |
pins 2 & 3 closed |
|
|
CPU speed select switchable at turbo switch |
S3 |
pins 1 & 2 closed |
|
» |
Factory configured - do not alter |
SW1/1 |
N/A |
|
» |
NPU disabled |
SW1/2 |
Off |
|
|
NPU enabled |
SW1/2 |
On |
|
» |
Factory configured - do not alter |
SW1/3 |
N/A |
|
» |
Monitor type select monochrome |
SW1/4 |
Off |
|
|
Monitor type select color |
SW1/4 |
On |
|
» |
Factory configured - do not alter |
TP1 |
Off |
|
» |
Factory configured - do not alter |
TP2 |
Off |
|
» |
Factory configured - do not alter |
TP3 |
Off |
|
» |
Factory configured - do not alter |
TP4 |
Off |
|
Note: The location of S1 is unidentified. |
|||
|
DRAM CONFIGURATION |
||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
4MB 2 |
(4) 1M x 9 |
NONE |
NONE |
NONE |
|
8MB 2 |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
NONE |
|
12MB 2 |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
|
16MB 1 |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB 2 |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB 1 |
(4) 4M x 9 |
NONE |
NONE |
NONE |
|
16MB 2 |
(4) 4M x 9 |
NONE |
NONE |
NONE |
|
20MB 2 |
(4) 4M x 9 |
(4) 1M x 9 |
NONE |
NONE |
|
24MB 2 |
(4) 4M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
|
28MB 2 |
(4) 4M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
|
32MB 1 |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
NONE |
|
Note 1: These memory configurations do not utilize 256KB remapping. Note 2: These memory configurations utilize 256KB memory remapping. Due to remapping, system memory count on boot-up will reflect 256KB less than actual. |
||||
|
DRAM SWITCH CONFIGURATION |
||||
|
Size |
SW1/5 |
SW1/6 |
SW1/ 7 |
SW1/8 |
|
4MB 2 |
On |
On |
On |
On |
|
8MB 2 |
On |
On |
On |
Off |
|
12MB 2 |
On |
On |
Off |
On |
|
16MB 1 |
On |
On |
Off |
Off |
|
16MB 2 |
On |
Off |
On |
Off |
|
16MB 1 |
On |
Off |
Off |
On |
|
16MB 2 |
On |
Off |
Off |
Off |
|
20MB 2 |
Off |
On |
On |
On |
|
24MB 2 |
Off |
On |
Off |
On |
|
28MB 2 |
Off |
On |
Off |
Off |
|
32MB 1 |
Off |
Off |
On |
On |
|
Note 1: These memory configurations do not utilize 256KB remapping. Note 2: These memory configurations utilize 256KB-memory remapping. Due to remapping, system memory count on boot-up will reflect 256KB less than actual. |
||||
|
CACHE CONFIGURATION |
||
|
Size |
Bank 0 |
TAG |
|
128KB |
(16) 8K x 8 |
(2) 8K x 8 |