AMERICAN MEGATRENDS, INC.
ATLAS PCI - II
|
Processor |
Pentium |
|
Processor Speed |
75/90/100/120/133MHz |
|
Chip Set |
Unidentified |
|
Video Chip Set |
None |
|
Maximum Onboard Memory |
256MB DRAM (EDO supported) |
|
Maximum Video Memory |
None |
|
Cache |
256/512/1024KB |
|
BIOS |
AMI |
|
Dimensions |
254mm x 203mm |
|
I/O Options |
32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), green VGA interface, cache slot |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
IDE interface 2 |
J1 |
Green PC connector |
J27 |
|
Serial port 1 |
J3 |
Reset switch |
J29 |
|
Serial port 2 |
J4 |
Turbo LED |
J33 |
|
Parallel port |
J6 |
IDE interface LED |
J34 |
|
Floppy drive interface |
J7 |
Green VGA interface |
J42 |
|
IDE interface 1 |
J8 |
Chassis fan power |
J46 |
|
PS/2 mouse interface |
J13 |
32-bit PCI slots |
PC1 - PC4 |
|
Power LED & keylock |
J19 |
Cache slot |
SL1 |
|
Speaker |
J22 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
Jumper information unidentified |
J20 |
N/A | |
|
Jumper information unidentified |
J31 |
N/A | |
|
|
PS/2 mouse IRQ12 enabled |
J38 |
Pins 1 & 2 closed |
|
PS/2 mouse IRQ12 disabled |
J38 |
Pins 2 & 3 closed | |
|
Jumper information unidentified |
J45 |
N/A | |
|
Jumper information unidentified |
J47 |
N/A | |
|
Jumper information unidentified |
J50 |
N/A | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
2MB |
(2) 256K x 36 |
None |
|
4MB |
(2) 512K x 36 |
None |
|
4MB |
(2) 256K x 36 |
(2) 256K x 36 |
|
6MB |
(2) 512K x 36 |
(2) 256K x 36 |
|
6MB |
(2) 256K x 36 |
(2) 512K x 36 |
|
8MB |
(2) 1M x 36 |
None |
|
8MB |
(2) 512K x 36 |
(2) 512K x 36 |
|
10MB |
(2) 1M x 36 |
(2) 256K x 36 |
|
10MB |
(2) 256K x 36 |
(2) 1M x 36 |
|
12MB |
(2) 1M x 36 |
(2) 512K x 36 |
|
12MB |
(2) 512K x 36 |
(2) 1M x 36 |
|
16MB |
(2) 2M x 36 |
None |
|
16MB |
(2) 1M x 36 |
(2) 1M x 36 |
|
18MB |
(2) 2M x 36 |
(2) 256K x 36 |
|
18MB |
(2) 256K x 36 |
(2) 2M x 36 |
|
20MB |
(2) 2M x 36 |
(2) 512K x 36 |
|
20MB |
(2) 512K x 36 |
(2) 2M x 36 |
|
24MB |
(2) 2M x 36 |
(2) 1M x 36 |
|
24MB |
(2) 1M x 36 |
(2) 2M x 36 |
|
32MB |
(2) 4M x 36 |
None |
|
32MB |
(2) 2M x 36 |
(2) 2M x 36 |
|
DRAM CONFIGURATION (CONT) | ||
|
Size |
Bank 0 |
Bank 1 |
|
34MB |
(2) 4M x 36 |
(2) 256K x 36 |
|
34MB |
(2) 256K x 36 |
(2) 4M x 36 |
|
36MB |
(2) 4M x 36 |
(2) 512K x 36 |
|
36MB |
(2) 512K x 36 |
(2) 4M x 36 |
|
40MB |
(2) 4M x 36 |
(2) 1M x 36 |
|
40MB |
(2) 1M x 36 |
(2) 4M x 36 |
|
48MB |
(2) 4M x 36 |
(2) 2M x 36 |
|
48MB |
(2) 2M x 36 |
(2) 4M x 36 |
|
64MB |
(2) 8M x 36 |
None |
|
64MB |
(2) 4M x 36 |
(2) 4M x 36 |
|
66MB |
(2) 8M x 36 |
(2) 256K x 36 |
|
66MB |
(2) 256K x 36 |
(2) 8M x 36 |
|
68MB |
(2) 8M x 36 |
(2) 512K x 36 |
|
68MB |
(2) 512K x 36 |
(2) 8M x 36 |
|
72MB |
(2) 8M x 36 |
(2) 1M x 36 |
|
72MB |
(2) 1M x 36 |
(2) 8M x 36 |
|
80MB |
(2) 8M x 36 |
(2) 2M x 36 |
|
80MB |
(2) 2M x 36 |
(2) 8M x 36 |
|
96MB |
(2) 8M x 36 |
(2) 4M x 36 |
|
96MB |
(2) 4M x 36 |
(2) 8M x 36 |
|
128MB |
(2) 16M x 36 |
None |
|
128MB |
(2) 8M x 36 |
(2) 8M x 36 |
|
130MB |
(2) 16M x 36 |
(2) 256K x 36 |
|
132MB |
(2) 16M x 36 |
(2) 512K x 36 |
|
136MB |
(2) 16M x 36 |
(2) 1M x 36 |
|
144MB |
(2) 16M x 36 |
(2) 2M x 36 |
|
160MB |
(2) 16M x 36 |
(2) 4M x 36 |
|
192MB |
(2) 16M x 36 |
(2) 8M x 36 |
|
256MB |
(2) 16M x 36 |
(2) 16M x 36 |
|
Note: Board accepts EDO memory. | ||
|
CACHE CONFIGURATION | ||
|
Size |
Bank 0 |
SL1 |
|
256KB (A) |
(8) 32K x 8 |
Not installed |
|
256KB (B) |
None |
Installed |
|
512KB (A) |
(8) 64K x 8 |
Not installed |
|
512KB (B) |
None |
Installed |
|
1MB (C) |
(8) 128K x 8 |
Not installed |
|
1MB (C) |
None |
Installed |
|
CACHE JUMPER CONFIGURATION | |||
|
Size |
J16 |
J26 |
J28 |
|
256KB (A) |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
256KB (B) |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
512KB (A) |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
|
512KB (B) |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
|
1MB (C) |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
|
1MB (C) |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
|
CACHE TYPE CONFIGURATION | |
|
Setting |
J30 |
|
SMT cache enabled |
Pins 1 & 2 closed |
|
SMT cache disabled |
Pins 2 & 3 closed |
|
CPU SPEED SELECTION | ||||
|
Speed |
J24 |
J25 |
J37 |
J39 |
|
75MHz |
Closed |
Closed |
Open |
Open |
|
90MHz |
Closed |
Open |
Open |
Open |
|
100MHz |
Open |
Closed |
Open |
Open |
|
120MHz |
Closed |
Open |
Open |
Closed |
|
133MHz |
Open |
Closed |
Open |
Closed |
|
CPU TYPE SELECTION | |
|
Type |
J11 |
|
VR |
Pins 1 & 2 closed |
|
VRE |
Pins 2 & 3 closed |
|
CPU VOLTAGE SELECTION | |||
|
Voltage |
J2 |
J12 |
J21 |
|
From regulator |
Open |
1 & 2, 3 & 4, 5 & 6 |
1 & 2, 3 & 4, 5 & 6 |
|
From regulator & VRM |
Open |
1 & 2, 3 & 4, 5 & 6 |
Open |
|
From 3.3v power supply |
1 & 2, 3 & 4, 5 & 6 |
Open |
1 & 2, 3 & 4, 5 & 6 |