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Let's create jumpers description for other mainboards!!! 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)
|
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
JP 17 - SINGLE/DUAL VOLTAGE SELECTOR. I/O VOLTAGE SELECTOR
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:
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
(Source: Alessandro Selli)
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:
LAST UPDATE :22 July, 2002
© Vadim A. Parkhomchuk
