SEH COMPUTER SYSTEME

VA-503+
Device Type Mainboard
Processor CX 6X86L/IBM 6X86L/CX 6X86MX/IBM 6X86MX/CX MII/AM K6/AM K6-2/Pentium MMX
Processor Speed 166/200/225/233/250/263/266/291/300/333/350/366/400MHz
Chip Set VIA
Maximum Onboard Memory 512MB (EDO & SDRAM supported)
Cache 512/1024KB
BIOS Award
Dimensions Unidentified
I/O Options 32-bit PCI slots (3), 16-bit ISA slots (3), floppy drive interface, green PC connector, IDE interfaces (2), AT Keyboard port, parallel interface, PS/2 keyboard port, PS/2 mouse port, PS/2 mouse interface, serial interfaces (2), IR connector, USB interface, AT power connector, ATX power connector, AGP slot, remote wake-up connector

36874-1.gif (19725 bytes)

CONNECTIONS

Purpose

Location

Purpose

Location

AGP slot AGP Turbo LED J1/Pins 7 & 8
AT power connector AT Green PC connector J1/Pins 10 & 11
ATX power connector ATX Green PC LED J1/Pins 13 & 14
Remote power connector CN5 Speaker J1/Pins 15 & 18
Serial interface 1 COM1 IDE interface LED J1/Pins 20 & 21
Serial interface 2 COM2 Remote power switch J1/Pins 23 & 24
CPU thermal sensor EISCA Reset switch J1/Pins 27 & 28
Chassis fan power FAN1 USB interface JUSB
CPU fan power FAN2 AT keyboard port KB1
Floppy drive interface FDD PS/2 keyboard port KB2
IDE interface 1 IDE1 Parallel interface LPT
IDE interface 2 IDE2 PS/2 mouse port MS
IR connector IR PS/2 mouse inteface MS2
16-bit ISA slots IS1 - IS3 32-bit PCI slots PC1 - PC3
Power LED & keylock J1/Pins 1 - 5 Remote wake-up connector RWU


USER CONFIGURABLE SETTINGS

Function

Label

Position

»

 Password disabled CPW Open
  Password enabled CPW Closed

»

 AT power supply selected

PWR

Pins 1 & 2 closed
  ATX power supply selected

PWR

Pins 2 & 3 closed
» SRAM Intel burst mode selected

SRAM

Pins 1 & 2 closed
  SRAM Linear burst mode selected

SRAM

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) 8M x 36

None

64MB

(2) 4M x 36

(2) 4M x 36

72MB

(2) 8M x 36

(2) 1M x 36

80MB

(2) 8M x 36

(2) 2M x 36

96MB

(2) 8M x 36

(2) 4M x 36

128MB

(2) 8M x 36

(2) 8M x 36

128MB

(2) 16M x 36

None

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

256MB

(2) 32M x 36

None

264MB

(2) 32M x 36

(2) 1M x 36

272MB

(2) 32M x 36

(2) 2M x 36

288MB

(2) 32M x 36

(2) 4M x 36

320MB

(2) 32M x 36

(2) 8M x 36

384MB

(2) 32M x 36

(2) 16M x 36

512MB

(2) 32M x 36

(2) 32M x 36

Note: Board accepts EDO & SDRAM memory.
Note: Bank 0 and bank 2 can not installed at the same time.  It is not recommended to mix SIMM and DIMM memory.


DIMM CONFIGURATION

Size

Bank 0

Bank 1

8MB

(1) 1M x 64

None

16MB

(1) 1M x 64

(1) 1M x 64

16MB

(1) 2M x 64

None

24MB

(1) 2M x 64

(1) 1M x 64

32MB

(1) 2M x 64

(1) 2M x 64

32MB

(1) 4M x 64

None

40MB

(1) 4M x 64

(1) 1M x 64

48MB

(1) 4M x 64

(1) 2M x 64

64MB

(1) 4M x 64

(1) 4M x 64

64MB

(1) 8M x 64

None

72MB

(1) 8M x 64

(1) 1M x 64

80MB

(1) 8M x 64

(1) 2M x 64

96MB

(1) 8M x 64

(1) 4M x 64

128MB

(1) 8M x 64

(1) 8M x 64

128MB

(1) 16M x 64

None

136MB

(1) 16M x 64

(1) 1M x 64

144MB

(1) 16M x 64

(1) 2M x 64

160MB

(1) 16M x 64

(1) 4M x 64

192MB

(1) 16M x 64

(1) 8M x 64

256MB

(1) 16M x 64

(1) 16M x 64

256MB

(1) 32M x 64

None

264MB

(1) 32M x 64

(1) 1M x 64

272MB

(1) 32M x 64

(1) 2M x 64

288MB

(1) 32M x 64

(1) 4M x 64

320MB

(1) 32M x 64

(1) 8M x 64

384MB

(1) 32M x 64

(1) 16M x 64

512MB

(1) 32M x 64

(1) 32M x 64
Note:  Board supports EDO & SDRAM memory.
Note:  Bank 0 and bank 2 can not installed at the same time.  It is not recommended to mix SIMM and DIMM memory.


CACHE CONFIGURATION

Size

Bank 0

TAG

512KB

(1) 64K x 64

 (1) 16K x 8

1MB

(2) 64K x 64

 (1) 32K x 8


CPU/DIMM SPEED SELECTION

Clock Speed

 DIMM Type CLK4 SDRAM1 SDRAM2 SDRAM3
66MHz PC-100 1 & 2 2 & 3 2 & 3 2 & 3
66MHz Non PC-100 2 & 3 1 & 2 2 & 3 2 & 3
75MHz PC-100 1 & 2 2 & 3 2 & 3 2 & 3
75MHz Non PC-100 2 & 3 1 & 2 2 & 3 2 & 3
83MHz PC-100 1 & 2 2 & 3 1 & 2 2 & 3
83MHz Non PC-100 2 & 3 1 & 2 1 & 2 2 & 3
95MHz PC-100 1 & 2 2 & 3 1 & 2 2 & 3
95MHz Non PC-100 2 & 3 1 & 2 1 & 2 2 & 3
100MHz PC-100 1 & 2 2 & 3 1 & 2 2 & 3
100MHz Non PC-100 2 & 3 1 & 2 1 & 2 2 & 3
112MHz Non PC-100 2 & 3 1 & 2 1 & 2 2 & 3
124MHz Non PC-100 2 & 3 1 & 2 1 & 2 2 & 3

Note:  Pins designated should be in the closed position


CPU SPEED SELECTION (CX 6X86L)

CPU speed

Clock speed

Multiplier

CLK1

 CLK2

CLK3

 FREQ1

FREQ2

FREQ3

166MHz

66MHz

2x

 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2

200MHz

75MHz

2x

 1 & 2 2 & 3 1 & 2 2 & 3 1 & 2 1 & 2

Note: Pins designated should be in the closed position.


CPU SPEED SELECTION (CX 6X86MX)

CPU speed

Clock speed

Multiplier

CLK1

 CLK2

CLK3

 FREQ1

FREQ2

FREQ3

166MHz

66MHz

2x

 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2

200MHz

66MHz

2.5x

 1 & 2 1 & 2 1 & 2 2 & 3 2 & 3 1 & 2

200MHz

75MHz

2x

 1 & 2 2 & 3 1 & 2 2 & 3 1 & 2 1 & 2
233MHz 75MHz 2.5x 1 & 2 2 & 3 1 & 2 2 & 3 2 & 3 1 & 2

233MHz

83MHz

2x

 2 & 3 2 & 3 1 & 2 2 & 3 1 & 2 1 & 2
266MHz 83MHz 2.5x 2 & 3 2 & 3 1 & 2 2 & 3 2 & 3 1 & 2

Note: Pins designated should be in the closed position.


CPU SPEED SELECTION (CX MII)

CPU speed

Clock speed

Multiplier

CLK1

 CLK2

CLK3

 FREQ1

FREQ2

FREQ3
300MHz 75MHz 3x 1 & 2 2 & 3 1 & 2 1 & 2 2 & 3 1 & 2
300MHz 66MHz 3.5x 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2
333MHz 83MHz 3x 2 & 3 2 & 3 1 & 2 1 & 2 2 & 3 1 & 2
333MHz 100MHz 2.5x 1 & 2 1 & 2 2 & 3 2 & 3 2 & 3 1 & 2
333MHz 75MHz 3.5x 1 & 2 2 & 3 1 & 2 1 & 2 1 & 2 1 & 2
333MHz 66MHz 4x 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 2 & 3
350MHz 83MHz 3.5x 2 & 3 2 & 3 1 & 2 1 & 2 1 & 2 1 & 2
350MHz 75MHz 4x 1 & 2 2 & 3 1 & 2 2 & 3 1 & 2 2 & 3
350MHz 100MHz 3x 1 & 2 1 & 2 2 & 3 1 & 2 2 & 3 1 & 2

Note: Pins designated should be in the closed position.


CPU SPEED SELECTION (IBM 6X86L)

CPU speed

Clock speed

Multiplier

CLK1

 CLK2

CLK3

 FREQ1

FREQ2

FREQ3

166MHz

66MHz

2x

 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2

200MHz

75MHz

2x

 1 & 2 2 & 3 1 & 2 2 & 3 1 & 2 1 & 2

Note: Pins designated should be in the closed position.


CPU SPEED SELECTION (IBM 6X86MX)

CPU speed

Clock speed

Multiplier

CLK1

 CLK2

CLK3

 FREQ1

FREQ2

FREQ3

166MHz

66MHz

2x

 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2

200MHz

66MHz

2.5x

 1 & 2 1 & 2 1 & 2 2 & 3 2 & 3 1 & 2

200MHz

75MHz

2x

 1 & 2 2 & 3 1 & 2 2 & 3 1 & 2 1 & 2
233MHz 75MHz 2.5x 1 & 2 2 & 3 1 & 2 2 & 3 2 & 3 1 & 2

233MHz

83MHz

2x

 2 & 3 2 & 3 1 & 2 2 & 3 1 & 2 1 & 2
266MHz 83MHz 2.5x 2 & 3 2 & 3 1 & 2 2 & 3 2 & 3 1 & 2

Note: Pins designated should be in the closed position.


CPU SPEED SELECTION (AM K6)

CPU speed

Clock speed

Multiplier

CLK1

 CLK2

CLK3

 FREQ1

FREQ2

FREQ3

166MHz

66MHz

2.5x

 1 & 2 1 & 2 1 & 2 2 & 3 2 & 3 1 & 2

200MHz

66MHz

3x

 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2

233MHz

66MHz

3.5x

 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2

266MHz

66MHz

4x

 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 2 & 3

300MHz

66MHz

4.5x

 1 & 2 1 & 2 1 & 2 2 & 3 2 & 3 2 & 3

Note: Pins designated should be in the closed position.


CPU SPEED SELECTION (AM K6-2)

CPU speed

Clock speed

Multiplier

CLK1

 CLK2

CLK3

 FREQ1

FREQ2

FREQ3

300MHz

66MHz

4.5x

 1 & 2 1 & 2 1 & 2 2 & 3 2 & 3 2 & 3

300MHz

100MHz

3x

 1 & 2 1 & 2 2 & 3 1 & 2 2 & 3 1 & 2

333MHz

95MHz

3.5x

 2 & 3 1 & 2 2 & 3 1 & 2 1 & 2 1 & 2

350MHz

100MHz

3.5x

 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 1 & 2

366MHz

66MHz

5.5x

 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3

400MHz

100MHz

4x

 1 & 2 1 & 2 2 & 3 2 & 3 1 & 2 2 & 3

Note: Pins designated should be in the closed position.


CPU SPEED SELECTION (PENTIUM MMX)

CPU speed

Clock speed

Multiplier

CLK1

 CLK2

CLK3

 FREQ1

FREQ2

FREQ3

166MHz

66MHz

2.5x

 1 & 2 1 & 2 1 & 2 2 & 3 2 & 3 1 & 2

200MHz

66MHz

3x

 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2

233MHz

66MHz

3.5x

 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2

Note: Pins designated should be in the closed position.


CPU VOLTAGE SELECTION

Voltage

 VR/Pins 1 & 2 VR/Pins 3 & 4 VR/Pins 5 & 6 VR/Pins 7 & 8
2.0V Open Open Open Open
2.1V Open Open Open Closed
2.2V Open Open Closed Open
2.3V Open Open Closed Closed
2.4V Open Closed Open Open
2.5V Open Closed Open Closed
2.6V Open Closed Closed Open
2.7V Open Closed Closed Closed
2.8V Closed Open Open Open
2.9V Closed Open Open Closed
3.0V Closed Open Closed Open
3.1V Closed Open Closed Closed
3.2V Closed Closed Open Open


FLASH ROM TYPE SELECTION

Size

 Type EP1 EP2
1MB Intel 28F001 Pins 2 & 3 closed Pins 1 & 2 closed
MXIC 2841000 Pins 2 & 3 closed Pins 1 & 2 closed
SST 29EE010 Pins 1 & 2 closed Pins 1 & 2 closed
ATMEL AT29C010 Pins 1 & 2 closed Pins 1 & 2 closed
2MB Winbond 29C020 Pins 1 & 2 closed Pins 2 & 3 closed
SST 29EE020 Pins 1 & 2 closed Pins 2 & 3 closed
ATMEL AM29F002T Pins 1 & 2 closed Pins 2 & 3 closed