ELITEGROUP COMPUTER SYSTEMS, INC.
UA4982
Processor CX486S/80486SX/SL80486SX/SL80486SX/80486SX2/CX486DX/U5S/
AM486DX/SL80486DX/80486DX/CX486DX2/AK486DX2/80486DX2/
SL80486DX2/P24D/AM486DX4/80486DX4
Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set UMC
Max. 64MB
Onboard
DRAM
Cache 128/256/512KB
BIOS Phoenix
Dimensions 254mm x 218mm
I/O 32-bit VESA local bus slots (2), green PC connector
Options
NPU None
Options
[Image]
CONNECTIONS
Purpose Location Purpose Location
External battery J2 Reset switch J90 pins 9 -
10
Turbo LED J90 pins 2 - Power LED & J90 pins 11 -
3 keylock 15
Green PC connector J90 pins 4 - Speaker J90 pins 17 -
5 20
Turbo switch J90 pins 6 - 32-bit VESA local SL1 - SL3
7 bus slots
USER CONFIGURABLE SETTINGS
Function Jumper Position
» Flash BIOS voltage select 5v JP1 pins 1 & 2
closed
Flash BIOS voltage select 12v JP1 pins 2 & 3
closed
» Keyboard type select external JP3 Open
Keyboard type select internal JP3 Closed
» Factory configured - do not JP20 N/A
alter
» Factory configured - do not JP21 N/A
alter
» Factory configured - do not JP22 N/A
alter
DRAM CONFIGURATION
Size Bank 0 Bank 1 Bank 2 Bank 3
1MB (1) 256K x NONE NONE NONE
36
2MB (1) 256K x (1) 256K x NONE NONE
36 36
2MB NONE NONE NONE (1) 512K x 36
3MB (1) 256K x (1) 256K x (1) 256K x NONE
36 36 36
4MB (1) 256K x (1) 256K x (1) 256K x (1) 256K x 36
36 36 36
4MB NONE NONE (1) 512K x (1) 512K x 36
36
4MB (1) 1M x 36 NONE NONE NONE
5MB (1) 1M x 36 (1) 256K x NONE NONE
36
6MB (1) 1M x 36 (1) 256K x (1) 256K x NONE
36 36
7MB (1) 1M x 36 (1) 256K x (1) 256K x (1) 256K x 36
36 36
8MB (1) 1M x 36 (1) 1M x 36 NONE NONE
8MB NONE NONE NONE (1) 2M x 36
9MB (1) 1M x 36 (1) 1M x 36 (1) 256K x NONE
36
10MB (1) 1M x 36 (1) 1M x 36 (1) 256K x (1) 256K x 36
36
12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 NONE
13MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 256K x 36
16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36
16MB NONE NONE (1) 2M x 36 (1) 2M x 36
16MB (1) 4M x 36 NONE NONE NONE
17MB (1) 4M x 36 (1) 256K x NONE NONE
36
18MB (1) 4M x 36 (1) 256K x (1) 256K x NONE
36 36
19MB (1) 4M x 36 (1) 256K x (1) 256K x (1) 256K x 36
36 36
20MB (1) 4M x 36 (1) 1M x 36 NONE NONE
21MB (1) 4M x 36 (1) 1M x 36 (1) 256K x NONE
36
22MB (1) 4M x 36 (1) 1M x 36 (1) 256K x (1) 256K x 36
36
24MB (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 NONE
25MB (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 (1) 256K x 36
28MB (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36
32MB (1) 4M x 36 (1) 4M x 36 NONE NONE
33MB (1) 4M x 36 (1) 4M x 36 (1) 256K x NONE
36
34MB (1) 4M x 36 (1) 4M x 36 (1) 256K x (1) 256K x 36
36
36MB (1) 4M x 36 (1) 4M x 36 (1) 1M x 36 NONE
37MB (1) 4M x 36 (1) 4M x 36 (1) 1M x 36 (1) 256K x 36
40MB (1) 4M x 36 (1) 4M x 36 (1) 1M x 36 (1) 1M x 36
DRAM CONFIGURATION (CON’T)
Size Bank 0 Bank 1 Bank 2 Bank 3
48MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 NONE
49MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 256K x 36
52MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 1M x 36
64MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36
CACHE CONFIGURATION
Size Bank 0 TAG
128KB (4) 32K x 8 (1) 32K x 8
256KB (4) 64K x 8 (1) 32K x 8
512KB (4) 128K x 8 (1) 32K x 8
CACHE JUMPER CONFIGURATION
Size JP4 JP5 JP6 JP10 JP11 JP12 JP13
128KB 1 & 2 1 & 2 Open Open Open Open Open
256KB 1 & 2 1 & 2 1 & 2 Open Open Open Closed
512KB 1 & 2 2 & 3 2 & 3 1 & 2 Closed Open Closed
Note: Pins designated should be in the closed position.
CPU TYPE CONFIGURATION
Type JP14 JP15 JP16
CX486S 2 & 3, 4 & 5 2 & 3 Open
80486SX Open 2 & 3 Open
SL80486SX 1 & 2, 3 & 4 2 & 3 Open
80486SX2 Open 2 & 3 Open
SL80486SX2 1 & 2, 3 & 4 2 & 3 Open
CX486DX 2 & 3 1 & 2, 3 & 4 1 & 2
U5S Open 2 & 3 3 & 4
AM486DX Open 1 & 2, 3 & 4 1 & 2
SL80486DX 1 & 2, 3 & 4 1 & 2, 3 & 4 1 & 2
80486DX Open 1 & 2, 3 & 4 1 & 2
CX486DX2 2 & 3 1 & 2, 3 & 4 1 & 2
AM486DX2 Open 1 & 2, 3 & 4 1 & 2
80486DX2 Open 1 & 2, 3 & 4 1 & 2
SL80486DX2 1 & 2, 3 & 4 1 & 2, 3 & 4 1 & 2
P24D 1 & 2, 3 & 4 1 & 2, 3 & 4 1 & 2
AM486DX4 Open 1 & 2, 3 & 4 1 & 2
80486DX4 1 & 2, 3 & 4 1 & 2, 3 & 4 1 & 2
Note: Pins designated should be in the closed position.
CPU TYPE CONFIGURATION (CON’T)
Type JP17 JP18 JP19
CX486S 2 & 3, 4 & 5 1 & 2, 3 & 4, 1 & 2, 3 & 4,
5 & 6 5 & 6
80486SX Open 2 & 3 Open
SL80486SX 5 & 6 1 & 2 1 & 2
80486SX2 Open 2 & 3 Open
SL80486SX2 5 & 6 1 & 2 1 & 2
CX486DX 2 & 3, 4 & 5 1 & 2, 3 & 4, 1 & 2, 3 & 4
5 & 6
U5S 1 & 2 2 & 3 2 & 3
AM486DX Open 2 & 3 Open
SL80486DX 5 & 6 1 & 2 1 & 2
80486DX Open 2 & 3 Open
CX486DX2 2 & 3, 4 & 5 1 & 2, 3 & 4, 1 & 2, 3 & 4
5 & 6
AM486DX2 Open 2 & 3 Open
80486DX2 Open 2 & 3 Open
SL80486DX2 5 & 6 1 & 2 1 & 2
P24D 3 & 4, 5 & 6 1 & 2, 4 & 5 1 & 2, 4 & 5
AM486DX4 Open 2 & 3 Open
80486DX4 5 & 6 1 & 2 1 & 2
Note: Pins designated should be in the closed position.
CPU TYPE CONFIGURATION
Type JP100 JP101 JP102 JP103
Cyrix Closed Closed Closed Closed
Intel/AMD Open Open Open Open
CPU SPEED CONFIGURATION
Speed JP7 JP8 JP9
25MHz Closed Open Open
33MHz Closed Closed Closed
40MHz Closed Closed Open
50iMHz Closed Open Open
50MHz Open Open Closed
66iMHz Closed Closed Closed
75iMHz Closed Open Open
100iMHz Closed Closed Closed
CPU SPEED CONFIGURATION (80486DX4 ONLY)
Speed JP24
2x pins 2 & 3 closed
3x Open
CPU SPEED CONFIGURATION (AM486DX4 ONLY)
Speed JP400
2x Closed
3x Open
VESA WAIT STATE CONFIGURATION
Wait states JP26
0 wait states Open
1 wait state Closed
BUS SPEED CONFIGURATION
CPU speed JP25
<= 33MHz Open
> 33MHz Closed