NMC INTERNATIONAL

NMC 5VMMX (ISA/PCI/AGP)
Device Type Mainboard
Processor CX 6X86L/CX 6X86MX/IBM 6X86L/IBM 6X86MX/AM K5/AM K6/IDT C6/Pentium/Pentium MMX
Processor Speed 133/150/166/180/200/225/233/240MHz
Chip Set VIA
Maximum Onboard Memory 384MB (EDO & SDRAM supported)
Cache 1024KB
BIOS Award
Dimensions 305mm x 230mm
I/O Options (backplane) 16-bit ISA slots (3), 32-bit PCI slots (4), floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port, PS/2 keyboard port, serial ports (2), IR connector, USB ports (2), ATX power connector, AGP slot, Wake-on-LAN connector


CONNECTIONS

Purpose

Location

Purpose

Location

AGP slot

AGP

16-bit ISA slots IS1 - IS3
ATX power connector

ATX

Reset switch J2/Pins 1 & 2
PS/2 mouse port CN1 Speaker J2/Pins 4 - 7
PS/2 keyboard port CN2 Power LED & Keylock J2/Pins 9 - 13
USB port 1 CN3 IR connector J3/Pins 1 - 5
USB port 2 CN4 IDE interface LED J3/Pins 7 & 8
Serial port 1 CN5 Turbo LED J3/Pins 9 & 10
Serial port 2 CN6 Power switch J3/Pins 12 & 13
Parallel port CN7 CPU fan power J4
Floppy drive interface FDD Chassis fan power J6
IDE interface 1 IDE1 Wake-on-LAN connector J7
IDE interface 2 IDE2 32-bit PCI slots

PC1 - PC4


USER CONFIGURABLE SETTINGS

Function

Label

Position

»

 Power on Keyboard disabled JP4

Pins 2 & 3 closed

  Power on Keyboard enabled JP4

Pins 1 & 2 closed

» SRAM clock at 66MHz JP5 Pins 1 & 2 closed

 

 SRAM clock at CPU bus clock speed

JP5

Pins 2 & 3 closed


SIMM CONFIGURATION

Size

Bank 0

Bank 1

8MB

(2) 1M x 36

None

16MB

(2) 2M x 36

None

16MB

(2) 1M x 36

(2) 1M x 36

24MB

(2) 2M x 36

(2) 1M x 36

32MB

(2) 4M x 36

None

32MB

(2) 2M x 36

(2) 2M x 36

40MB

(2) 4M x 36

(2) 1M x 36

48MB

(2) 4M x 36

(2) 2M x 36

64MB

(2) 4M x 36

(2) 4M x 36

Note:  Board supports EDO & SDRAM memory.
Note: SIMM bank might be used in place of Bank 2 DIMM.


DIMM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

8MB

(1) 1M x 64

None

None

16MB

(1) 1M x 64

(1) 1M x 64

None

16MB

(1) 2M x 64

None

None

24MB

(1) 1M x 64

(1) 1M x 64

(1) 1M x 64

32MB

(1) 2M x 64

(1) 2M x 64

None

32MB

(1) 4M x 64

None

None

32MB

(1) 2M x 64

(1) 1M x 64

(1) 1M x 64

48MB

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

48MB

(1) 4M x 64

(1) 1M x 64

(1) 1M x 64

64MB

(1) 4M x 64

(1) 4M x 64

None

64MB

(1) 8M x 64

None

None

64MB

(1) 4M x 64

(1) 2M x 64

(1) 2M x 64

80MB

(1) 8M x 64

(1) 1M x 64

(1) 1M x 64

96MB

(1) 4M x 64

(1) 4M x 64

(1) 4M x 64

96MB

(1) 8M x 64

(1) 2M x 64

(1) 2M x 64

128MB

(1) 8M x 64

(1) 8M x 64

None

128MB

(1) 16M x 64

None

None

128MB

(1) 8M x 64

(1) 4M x 64

(1) 4M x 64

144MB

(1) 16M x 64

(1) 1M x 64

(1) 1M x 64

160MB

(1) 16M x 64

(1) 2M x 64

(1) 2M x 64

192MB

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

192MB

(1) 16M x 64

(1) 4M x 64

(1) 4M x 64

256MB

(1) 16M x 64

(1) 16M x 64

None

256MB

(1) 32M x 64

None

None

256MB

(1) 16M x 64

(1) 8M x 64

(1) 8M x 64

272MB

(1) 32M x 64

(1) 1M x 64

(1) 1M x 64

288MB

(1) 32M x 64

(1) 2M x 64

(1) 2M x 64

320MB

(1) 32M x 64

(1) 4M x 64

(1) 4M x 64

384MB

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64
Note:  Board supports EDO & SDRAM memory.


CPU SPEED SELECTION (CX 6X86L)

CPU speed

Clock speed

Multiplier

 JP3
166MHz 66MHz 2x Pins 1 & 2, 19 & 20 closed
200MHz 75MHz 2x Pins 1 & 2, 21 & 22 closed


CPU SPEED SELECTION (CX 6X86MX)

CPU speed

Clock speed

Multiplier

 JP3

166MHz

60MHz

2.5x

 Pins 3 & 4, 17 & 18 closed
166MHz 66MHz 2x Pins 1 & 2, 19 & 20 closed

200MHz

 66MHz 2.5x Pins 3 & 4, 19 & 20 closed
200MHz 75MHz 2x Pins 1 & 2, 21 & 22 closed

233MHz

 66MHz 3x Pins 5 & 6, 19 & 20 closed
233MHz 75MHz 2.5x Pins 3 & 4, 21 & 22 closed

266MHz

 66MHz 3.5x Pins 7 & 8, 19 & 20 closed

266MHz

 75MHz 3x Pins 5 & 6, 21 & 22 closed
266MHz 83MHz 2.5x Pins 3 & 4, 23 & 24 closed


CPU SPEED SELECTION (IBM 6X86L)

CPU speed

Clock speed

Multiplier

 JP3
166MHz 66MHz 2x Pins 1 & 2, 19 & 20 closed
200MHz 75MHz 2x Pins 1 & 2, 21 & 22 closed


CPU SPEED SELECTION (IBM 6X86MX)

CPU speed

Clock speed

Multiplier

 JP3

166MHz

60MHz

2.5x

 Pins 3 & 4, 17 & 18 closed
166MHz 66MHz 2x Pins 1 & 2, 19 & 20 closed

200MHz

 66MHz 2.5x Pins 3 & 4, 19 & 20 closed
200MHz 75MHz 2x Pins 1 & 2, 21 & 22 closed

233MHz

 66MHz 3x Pins 5 & 6, 19 & 20 closed
233MHz 75MHz 2.5x Pins 3 & 4, 21 & 22 closed

266MHz

 66MHz 3.5x Pins 7 & 8, 19 & 20 closed

266MHz

 75MHz 3x Pins 5 & 6, 21 & 22 closed
266MHz 83MHz 2.5x Pins 3 & 4, 23 & 24 closed


CPU SPEED SELECTION (AM K5)

CPU speed

Clock speed

Multiplier

 JP3

133MHz

66MHz

2x

 Pins 1 & 2, 19 & 20 closed

150MHz

60MHz

2.5x

 Pins 3 & 4, 17 & 18 closed

166MHz

 66MHz 2.5x Pins 3 & 4, 19 & 20 closed


CPU SPEED SELECTION (AM K6)

CPU speed

Clock speed

Multiplier

 JP3

166MHz

 66MHz 2.5x Pins 3 & 4, 19 & 20 closed

200MHz

 66MHz 3x Pins 5 & 6, 19 & 20 closed
233MHz 66MHz 3.5x Pins 7 & 8, 19 & 20 closed


CPU SPEED SELECTION (IDT C6)

CPU speed

Clock speed

Multiplier

 JP3

200MHz

 66MHz 3x Pins 5 & 6, 19 & 20 closed
225MHz 75MHz 3x Pins 5 & 6, 21 & 22 closed
240MHz 60MHz 4x Pins 9 & 10, 17 & 18 closed


CPU SPEED SELECTION (PENTIUM)

CPU speed

Clock speed

Multiplier

 JP3

133MHz

66MHz

2x

 Pins 1 & 2, 19 & 20 closed

150MHz

60MHz

2.5x

 Pins 3 & 4, 17 & 18 closed

166MHz

 66MHz 2.5x Pins 3 & 4, 19 & 20 closed

180MHz

60MHz

3x

 Pins 5 & 6, 17 & 18 closed

200MHz

 66MHz 3x Pins 5 & 6, 19 & 20 closed


CPU SPEED SELECTION (PENTIUM MMX)

CPU speed

Clock speed

Multiplier

 JP3

166MHz

 66MHz 2.5x Pins 3 & 4, 19 & 20 closed

200MHz

 66MHz 3x Pins 5 & 6, 19 & 20 closed
233MHz 66MHz 3.5x Pins 7 & 8, 19 & 20 closed


CPU VOLTAGE SELECTION

Voltage

 JP2
2.1v - Reserved Pins 1 & 2 closed
2.2v Pins 3 & 4 closed
2.8v Pins 5 & 6 closed
2.9v Pins 7 & 8 closed
3.2v Pins 9 & 10 closed