SOYO V1.1, V1.0 quick start PCI Clock, JP10, Select the CPU Burst Mode

Installation

SY-5EHM/5EH5 V1.x Quick Start Guide

Jumper JP7 is used to indicate the frequency of the CPU bus clock to the ETEQ chipset. Jumpers JP9 and JP10 are used to determine that the SDRAM is running at the frequency of the CPU bus clock or at that of the AGP clock.

CPU BUS	AGP BUS	PCI Clock	JP7	JP9	JP10	SDRAM
Clock	Clock					Clock
66MHz	66MHz	33MHz	2-3	2-3	1-2	66MHz
75MHz	75MHz	37.5MHz	2-3	2-3	1-2	75MHz
83MHz	55MHz	27.5MHz	1-2	1-2	2-3	55MHz
			1-2	2-3	1-2	83MHz
95MHz	63.4MHz	31.7MHz	1-2	1-2	2-3	63.4MHz
			1-2	2-3	1-2	95MHz
100MHz	66MHz	33MHz	1-2	1-2	2-3	66MHz
			1-2	2-3	1-2	100MHz
112MHz	75MHz	37.5MHz	1-2	1-2	2-3	75MHz
			1-2	2-3	1-2	112MHz
124MHz	82.6MHz	41.3MHz	1-2	1-2	2-3	82.6MHz
			1-2	2-3	1-2	124MHz

Note: Use 8ns or faster SDRAM modules (for PC100) when SDRAM is set to run

at the frequency of 95/100MHz.

Step 4. Select the CPU Burst Mode

There are two types of CPU burst modes according to manufacturer design:

ØInterleave Burst (CPU: Intel P54C/P55C, AMD K5/K6/K6-2/K6-III,IDT X86

CPU, Rise mP6)
Ø Linear Burst	(CPU: Cyrix 6x86/L/MX/M II)
	Interleave		Linear
CPU Burst Mode	Intel ™ P54C/P55C
	AMD ™ K5/K6/K6-2/K6-III		Cyrix ™ 6x86/L/MX/MII
	IDT X86 CPU, Rise mP6
JP22 Setting	When using Intel	1	When using
				1
	or AMD CPUs.	2	Cyrix type of	2
	(Default)		CPU.
		3		3

If you are using a Cyrix ™ 6x86/L/MX/M II series CPU, set the burst mode to Linear by shorting pin 2-3 on jumper JP22, and follow the following steps to select the correct Linear burst mode in BIOS:

1.During the boot-up initial sequence, press the [Delete] key to enter the BIOS setup menu.

2.Select the [CHIPSET FEATURES SETUP] section in BIOS.

3.In the [CHIPSET FEATURES SETUP] sub-menu, set the [Linear Burst] field to [Enabled].

4.Press [Esc] to return to the BIOS main menu.

5.Then choose [Save & Exit Setup] to re-boot your computer.

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