ATRONICS INTERNATIONAL, INC. 486/B2
Form factor
Baby-AT (max 220 x 330mm)
PSU connector
AT-Style (P8-P9)
Chipset
Chipset parts
UMC UM82C481
UMC UM82C482
(any brand) 82C206
Dimensions
330mm x 218mm
CPU platform
486
Supported FSB speeds
20MHz, 25MHz, 33MHz, 50MHz
Cache
32 KB
, 64 KB
, 128 KB
, 256 KB
Supported RAM size
64 MB
Supported RAM type
30-pin SIMM
I/O ports
1x
AT Keyboard
Expansion slots
1x
8-bit ISA
7x
16-bit ISA
Known issues:
-
Leaky Ni-Cd clock battery.
Remove the Ni-Cd battery as soon as possible and neutralize the leakage using white vinegar. Some more in-depth look may be needed to properly fix the motherboard. The battery can then be replaced using this https://github.com/wiretap-retro/Not-A-Varta.
Notes
Chipset relabeled as "Cu" brand.
Last updated 2022-05-24T09:58:39Z
Drivers:
not available
BIOS images:
no files available
Manuf.
POST String
Note
Core Ver.
BIOS Ver.
AMI
MTL Jumper manual
Model
Speed
FSB
Voltages
L1 Cache
L2 Cache
L3 Cache
Core
Process
TDP
Intel i486 DX 50
50MHz
50MHz
5V
8KB
-
-
P4
1000nm
-
Intel OverDrive 486SX2-66 (PGA169)
66MHz
33MHz
5V
8KB
-
-
P23T
-
-
Intel OverDrive 486DX2-66 (PGA169)
66MHz
33MHz
5V
8KB
-
-
P4T
-
-
Intel OverDrive 486DX2-66 (PGA168)
66MHz
33MHz
5V
8KB
-
-
P4T
-
-
Intel i486 DX2 66
66MHz
33MHz
5V
8KB
-
-
P24
800nm
5W
Intel i486 SX 33
33MHz
33MHz
5V
8KB
-
-
P23
1000nm
-
Intel i486 DX 33
33MHz
33MHz
5V
8KB
-
-
P4
1000nm
-
Intel OverDrive 486SX2-50 (PGA169)
50MHz
25MHz
5V
8KB
-
-
P23T
-
-
Intel OverDrive 486DX2-50 (PGA169)
50MHz
25MHz
5V
8KB
-
-
P4T
-
-
Intel OverDrive 486DX2-50 (PGA168)
50MHz
25MHz
5V
8KB
-
-
P4T
-
-
Intel i486 DX2 50
50MHz
25MHz
5V
8KB
-
-
P24
800nm
-
Intel i486 SX 25
25MHz
25MHz
5V
8KB
-
-
P23
1000nm
-
Intel i486 DX 25
25MHz
25MHz
5V
8KB
-
-
P4
1000nm
-
Intel OverDrive 486SX2-40 (PGA168)
40MHz
20MHz
5V
8KB
-
-
P23T
-
-
Intel i486 SX 20
20MHz
20MHz
5V
8KB
-
-
P23
1000nm
-
No NPUs listed.
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