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SPRING CIRCLE ST 586 REV. P 564-3 JUMPERS DESCRIPTION

SPRING CIRCLE ST586 REV.  SP550-U3 JUMPERS DESCRIPTION

SPRING CIRCLE ST586 REV.  SP571-5 JUMPERS DESCRIPTION

SPRING CIRCLE 4X521 JUMPERS DESCRIPTION

 

 


SPRING CIRCLE ST 586 REV. P 564-3 JUMPERS DESCRIPTION

 

JP 1 . FLASH BIOS WRITE OPTION

1-2 - DISABLE FLASH BIOS UPDATE/WRITING (+5V)
2-3 - ENABLE FLASH BIOS UPDATE/WRITE (+12V)

 

 

JP 5 (1-2 pins). CLEAR CMOS

Erase all information (password, setup settings) in non-volatile memory  (CMOS).

SHORT (CLOSED) - CLEAR CMOS
OPEN - NORMAL

To clear CMOS short 1-2 pins of JP5. Power ON your computer, after memory test count power off computer, open JP5. Power On computer, press DEL key, reconfigure your system.

 

 

JP 13, 14, 15 - FRONT SIDE BUS FREQUENCY

50 MHz

51 MHz

55 MHz

60 MHz

62 MHz

66 MHz

69 MHz

75 MHz

JP 13

1-2

2-3

1-2

1-2

2-3

1-2

2-3

2-3

JP 14

2-3

2-3

1-2

2-3

2-3

1-2

1-2

1-2

JP 15

2-3

2-3

1-2

1-2

1-2

2-3

2-3

1-2

 

NOTE. This settings valid for Intel CPUs. Settings for other CPUs may have some differences on non-standart (51, 62, 69,75 MHz) frequencies: for AMD K5 CPUs 75 MHz jumpers settings are (2-3,2-3,1-2), 62 MHz - (2-3,1-2,1-2).

 

 

JP 16 - CORE VOLTAGE LEVEL FOR DUAL-VOLTAGE CPUs

1-2 - 2.5 V  (AMD K5-PR200)
2-3 - 2.8 V (AMD K6, INTEL PENTIUM MMX)

 

 

JP 17 - SINGLE/DUAL VOLTAGE SELECTOR. I/O VOLTAGE SELECTOR

1-2 - DUAL VOLTAGE CPU INSTALLED
2-3 - SINGLE VOLTAGE CPU INSTALLED

4-5 - 3.3 V I/O VOLTAGE
5-6 - 3.45 V  I/O AND CORE VOLTAGE LEVEL

 

 

JP 20. FSB/CPU MULTIPLIER.

Multiplier

1.5

2.0

2.5

3.0

JP20

2-3

5-6

1-2

5-6

1-2

4-5

2-3

4-5

NOTE. This setings are valid for Intel Pentium CPUs only. Other CPUs may have some differencies:

  1. For AMD K5 PR 120/133 multiplier settings 1.5 and 2.0 valid as 1.5; 2.5 and 3.0 - 2.0
  2. For AMD K5 PR 150/166 multiplier 2.5 valid as 1.75
  3. For CYRIX 6X86 processors multipliers 1.5 AND 2.0 valid as 2.0 .

 


SPRING CIRCLE ST586 REV.  SP550-U3 JUMPERS DESCRIPTION

CONNECTIONS


   Purpose                           Location

Serial port 2                            J1
Serial port 1                            J2
Floppy drive                            J3
Parallel port                            J4
IDE interface 2                        J5
IDE interface 1                        J6
VRM connector                        J8
External battery                      J9
Turbo LED                              J11 pins 2 & 3
Green PC connector                 J11 pins 4 & 5
Turbo switch                           J11 pins 6 & 7
Reset switch                            J11 pins 9 & 10
Power LED & keylock               J11 pins 11 - 15
Speaker                                  J11 pins 17 - 20
32-bit PCI slots                       PC1 - PC4
Cache slot                              SL1
IDE interface                          LED J10

USER CONFIGURABLE SETTINGS

Function                                                 Label                  Position
Jumper information unavailable                 J12                 Unidentified

Flash BIOS voltage select 5v                      JP4             Pins 1 & 2 closed
Flash BIOS voltage select 12v                    JP4             Pins 2 & 3 closed

CMOS memory normal operation               JP5                     Open
CMOS memory clear                                 JP5                    Closed

Parallel port IRQ select IRQ7                     JR1             Pins 1 & 2 closed
Parallel port IRQ select IRQ5                     JR1             Pins 2 & 3 closed


CACHE JUMPER CONFIGURATION

Size                                                        JP7                      JP9

None                                         Pins 1 & 2 closed     Pins 1 & 2, 4 & 5 closed
256KB (A)                                  Pins 2 & 3 closed     Pins 1 & 2, 5 & 6 closed
256KB (B)                                           Open                       Open
512KB (A)                                  Pins 1 & 2 closed     Pins 2 & 3, 4 & 5 closed
512KB (B)                                           Open                       Open

CACHE VOLTAGE CONFIGURATION

Size                                                        JP6

3.3v                                               Pins 2 & 3 closed
5v mixed                                        Pins 1 & 2 closed


CPU SPEED SELECTION (CYRIX)

Speed        JP1                   JP2                JP3                    JP8
120MHz  Pins 2 & 3     Pins 2 & 3        Pins 1 & 2        Pins 1 & 2, 5 & 6
150MHz  Pins 2 & 3     Pins 1 & 2        Pins 2 & 3        Pins 1 & 2, 5 & 6
166MHz  Pins 1 & 2     Pins 2 & 3        Pins 2 & 3        Pins 1 & 2, 5 & 6

CPU SPEED SELECTION (INTEL)

Speed        JP1                   JP2                JP3                   JP8
75MHz    Pins 2 & 3       Pins 2 & 3     Pins 1 & 2        Pins 1 & 2, 4 & 5
90MHz    Pins 2 & 3      Pins 1 & 2      Pins 2 & 3       Pins 1 & 2, 4 & 5
100MHz  Pins 1 & 2      Pins 2 & 3      Pins 2 & 3       Pins 1 & 2, 4 & 5
120MHz  Pins 2 & 3      Pins 1 & 2      Pins 2 & 3       Pins 1 & 2, 5 & 6
133MHz  Pins 1 & 2      Pins 2 & 3      Pins 2 & 3       Pins 1 & 2, 5 & 6
150MHz  Pins 2 & 3      Pins 1 & 2      Pins 2 & 3       Pins 2 & 3, 5 & 6
166MHz  Pins 1 & 2      Pins 2 & 3      Pins 2 & 3       Pins 2 & 3, 5 & 6

CPU VOLTAGE SELECTION

Voltage                             JP10
3.3v                        Pins 1 & 2 closed
3.4v                        Pins 2 & 3 closed
3.5v                        Pins 4 & 5 closed

CPU VOLTAGE SELECTION

Setting                                                                 J8
Regular CPU voltage                                 Pins 4 & 5, 6 & 7, 19 & 20, 21 & 22 closed
VRM module for CPU voltage                                 Open

DMA CHANNEL SELECTION

Channel                                                                 JR2
1                                                              Pins 1 & 2, 4 & 5 closed
3                                                              Pins 2 & 3, 5 & 6 closed


SPRING CIRCLE ST586 REV.  SP571-5 JUMPERS DESCRIPTION

(Source: Alessandro Selli)

Mainboard

USER CONFIGURABLE SETTINGS

FRONT SIDE BUS CLOCK SELECTION:

   FREQ               JP3               JP4

  50MHZ             2-3                2-3
  55MHZ             1-2                1-2
  60MHZ             2-3                1-2
  66MHZ             1-2                2-3

CPU FREQ. RATIO

                                     JP6

 X1.5                          1-2, 4-5
 X2                             1-2, 5-6 
 X2.5                          2-3, 5-6 
 X3                             2-3, 4-5 

OTHER JUMPERS:

JP9 - Cache size 256K/512K(?):

1-2   -  256K
2-3   -  unknown

JP3, JP4 - Front side bus frequency (see above)

JP1 - BIOS write protection 5V/12V

JP2 - unknown.   (CMOS clear?)
        MMX(*) 2-3 - shorted

JP10 - unknown. 
        MMX(*) 1-2 shorted

JP 6 - multiplier, see above

JP8 - unknown.  (Voltage regulator functions?)
        MMX(*) 1-3, 4-6 - shorted

JP5, JP7 - core/io voltage:
       MMX(*) - JP5   pins 2-3 shorted
                     JP7   pins 1-2 shorted

CONNECTORS:

J1 - USB

J2 - PS/2

J12 - IDE LED

J11 - Front panel connectors:
     9-10 - Reset switch
    11-12 - Power LED
    20-17 - Speaker

REMARK:

MMX(*) sign assumes  normal functionality on Intel MMX/AMD K6 2.8V CPUs, all other supported CPUs (except AMD K5 PR200 2.5V core) should support this mode.


SPRING CIRCLE 4X521 JUMPERS DESCRIPTION
Thanks to Edwin van Boven, http:/ /www.xs4all.nl/~elhvb/mboards.html

CONNECTIONS

Turbo LED J6
External battery JP1
Speaker J7
Green PC connector JP14
Turbo switch J8
Green PC LED JP15
Power LED & keylock J9
32-bit VESA local bus SL1 – SL3 slots
Reset switch J10

USER CONFIGURABLE SETTINGS

Function - Label - Position

PQFP CPU enabled - JP5 - Open
PQFP CPU disabled - JP5 - Closed
CMOS memory normal operation - JP6 - Unidentified
CMOS memory clear - JP6 - Unidentified
Green PC disabled - JP13 - Open
Green PC enabled - JP13 - Closed
Green clock speed select 8MHz - JP16 - Pins 2 & 3 closed
Green clock speed select 16MHz - JP16 - Pins 1 & 2 closed

CACHE JUMPER CONFIGURATION

Size JP8A JP8B JP8C

64KB 2-3 1-2 2-3
128KB 1-2 2-3 1-2
256KB 1-2 1-2 1-2

CPU SPEED SELECTION

Speed JP7A JP7B JP7C
20MHz Open Closed Closed
25MHz Closed Open Open
33MHz Open Open Open
40MHz Closed Closed Open
50iMHz Closed Open Open
50MHz Open Closed Open
66iMHz Open Open Open

CPU TYPE SELECTION

Type JP2 JP3 JP4 JP12

80486SX 2-3 2-3 2-3 1-2
80487SX 2-3 1-2 1-2 1-2
80486DX 2-3 2-3 2-3 1-2 (PQFP)
80486DX 1-2 1-2 1-2 1-2 (PGA)
80486DX2 1-2 1-2 1-2 1-2
P23T 2-3 1-2 1-2 1-2
P24T 1-2 1-2 1-2 2-3

CPU TYPE SELECTION (CYRIX ONLY)

Type JP20
CX486DX Open
CX486DX2 Closed

VL BUS WAIT STATE SELECTION

Setting JP10
0 Pins 1 & 2 closed
1 Pins 2 & 3 closed

VL BUS SPEED SELECTION

Speed JP11
<= 33MHz Pins 1 & 2 closed
>33 MHz Pins 2 & 3 closed

If you have newest bios update, or additions and remarks for information placed on this site write to:

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LAST UPDATE :22 July, 2002

Vadim A. Parkhomchuk