NIAGARA SMD TECHNOLOGY, INC.
NT924 (REV. 2)
Processor |
AM K5/CX M1/Pentium |
Processor Speed |
75/90/100/120/133/150/166/180/200MHz |
Chip Set |
Intel |
Maximum Onboard Memory |
128MB |
Cache |
256/512KB |
BIOS |
Award/Phoenix |
Dimensions |
330mm x 218mm |
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), cache slot, IR connector |
NPU Options |
None |
CONNECTIONS | |||
Function |
Label |
Function |
Label |
IDE interface 1 |
IDE1 |
IDE interface LED |
J13 |
IDE interface 2 |
IDE2 |
Green PC LED |
J14 |
PS/2 mouse interface |
J3 |
Turbo LED |
J15 |
Serial port 1 |
J4 |
Reset switch |
J16 |
Serial port 2 |
J6 |
Speaker |
J17 |
Floppy drive interface |
J7 |
Power LED & keylock |
J18 |
Parallel port |
J8 |
IR connector |
JP2 |
Chassis fan power |
J9 |
32-bit PCI slots |
PC1 - PC4 |
Green PC connector |
J12 |
Cache slot |
SL1 |
USER CONFIGURABLE SETTINGS | |||
Setting |
Label |
Position | |
Keyboard clock select depends on ISA clock |
JP4 |
Pins 1 & 2 closed | |
Keyboard clock select set at 12MHz |
JP4 |
Pins 2 & 3 closed | |
BIOS type select normal operation |
JP6 |
Pins 1 & 2 closed | |
BIOS type select flash mode |
JP6 |
Pins 2 & 3 closed | |
» |
Flash BIOS voltage select 5v |
JP7 |
Pins 1 & 2 closed |
Flash BIOS voltage select 12v |
JP7 |
Pins 2 & 3 closed |
DRAM CONFIGURATION | ||
Size |
Bank 0 |
Bank 1 |
8MB |
(2) 1M x 32 |
None |
8MB |
(2) 512K x 32 |
(2) 512K x 32 |
10MB |
(2) 1M x 32 |
(2) 256K x 32 |
10MB |
(2) 256K x 32 |
(2) 1M x 32 |
12MB |
(2) 1M x 32 |
(2) 512K x 32 |
12MB |
(2) 512K x 32 |
(2) 1M x 32 |
16MB |
(2) 2M x 32 |
None |
16MB |
(2) 1M x 32 |
(2) 1M x 32 |
18MB |
(2) 2M x 32 |
(2) 256K x 32 |
18MB |
(2) 256K x 32 |
(2) 2M x 32 |
20MB |
(2) 2M x 32 |
(2) 512K x 32 |
20MB |
(2) 512K x 32 |
(2) 2M x 32 |
24MB |
(2) 2M x 32 |
(2) 1M x 32 |
24MB |
(2) 1M x 32 |
(2) 2M x 32 |
32MB |
(2) 4M x 32 |
None |
32MB |
(2) 2M x 32 |
(2) 2M x 32 |
34MB |
(2) 4M x 32 |
(2) 256K x 32 |
34MB |
(2) 256K x 32 |
(2) 4M x 32 |
36MB |
(2) 4M x 32 |
(2) 512K x 32 |
36MB |
(2) 512K x 32 |
(2) 4M x 32 |
40MB |
(2) 4M x 32 |
(2) 1M x 32 |
40MB |
(2) 1M x 32 |
(2) 4M x 32 |
48MB |
(2) 4M x 32 |
(2) 2M x 32 |
48MB |
(2) 2M x 32 |
(2) 4M x 32 |
64MB |
(2) 8M x 32 |
None |
64MB |
(2) 4M x 32 |
(2) 4M x 32 |
66MB |
(2) 8M x 32 |
(2) 256K x 32 |
66MB |
(2) 256K x 32 |
(2) 8M x 32 |
68MB |
(2) 8M x 32 |
(2) 512K x 32 |
68MB |
(2) 512K x 32 |
(2) 8M x 32 |
72MB |
(2) 8M x 32 |
(2) 1M x 32 |
72MB |
(2) 1M x 32 |
(2) 8M x 32 |
DRAM CONFIGURATION | ||
Size |
Bank 0 |
Bank 1 |
80MB |
(2) 8M x 32 |
(2) 2M x 32 |
80MB |
(2) 2M x 32 |
(2) 8M x 32 |
96MB |
(2) 8M x 32 |
(2) 4M x 32 |
96MB |
(2) 4M x 32 |
(2) 8M x 32 |
128MB |
(2) 8M x 32 |
(2) 8M x 32 |
Note: Board accepts EDO memory. |
CACHE CONFIGURATION | ||||
Size |
Bank 0 |
Bank 1 |
TAG |
SL1 |
256KB (A) |
(2) 32K x 32 |
None |
(1) 8K/16K x 8 |
Not installed |
256KB (B) |
None |
None |
None |
256KB module installed |
512KB (A) |
(2) 32K x 32 |
(2) 32K x 32 |
(1) 16K/32K x 8 |
Not installed |
512KB (B) |
None |
None |
None |
512KB module installed |
Note: The location of banks 0 & 1 are unidentified. |
CACHE JUMPER CONFIGURATION | ||
Size |
JP10 |
JP11 |
256KB (A/B) |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
512KB (A/B) |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
CPU SPEED SELECTION (CYRIX) | |||||||
CPU speed |
Clock speed |
Multiplier |
JP3 |
JP12 |
JP13 |
JPS1 |
JPS2 |
120MHz |
50MHz |
2x |
1 & 2 |
2 & 3 |
1 & 2 |
Closed |
Closed |
150MHz |
60MHz |
2x |
2 & 3 |
2 & 3 |
1 & 2 |
Closed |
Open |
166MHz |
66MHz |
2x |
2 & 3 |
2 & 3 |
1 & 2 |
Open |
Closed |
Note: Pins designated should be in the closed position. |
CPU SPEED SELECTION (INTEL) | |||||||
CPU speed |
Clock speed |
Multiplier |
JP3 |
JP12 |
JP13 |
JPS1 |
JPS2 |
75MHz |
50MHz |
1.5x |
1 & 2 |
2 & 3 |
2 & 3 |
Closed |
Closed |
90MHz |
60MHz |
1.5x |
2 & 3 |
2 & 3 |
2 & 3 |
Closed |
Open |
100MHz |
66MHz |
1.5x |
2 & 3 |
2 & 3 |
2 & 3 |
Open |
Closed |
120MHz |
60MHz |
2x |
2 & 3 |
2 & 3 |
1 & 2 |
Closed |
Open |
133MHz |
66MHz |
2x |
2 & 3 |
2 & 3 |
1 & 2 |
Open |
Closed |
150MHz |
60MHz |
2.5x |
2 & 3 |
1 & 2 |
1 & 2 |
Closed |
Open |
166MHz |
66MHz |
2.5x |
2 & 3 |
1 & 2 |
1 & 2 |
Open |
Closed |
180MHz |
60MHz |
3x |
2 & 3 |
1 & 2 |
2 & 3 |
Closed |
Open |
200MHz |
66MHz |
3x |
2 & 3 |
1 & 2 |
2 & 3 |
Open |
Closed |
Note: Pins designated should be in the closed position. |
CPU TYPE SELECTION | ||||
Setting |
JP8A |
JP8B |
JP8C |
JP8D |
CX M1 |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
AM K5 |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
P54C/CTB |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
P55C |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
Pins 2 & 3 closed |