AZZA PT-5IT User manual
PT-5IT
SYSTEM BOARD
( VER. 1.x )
OPERATION MANUAL
PT-5IT SYSTEM BOARD TABLE OF CONTENTS
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TABLE OF CONTENTS
Chapter & Section Page
1. INTRODUCTION .................................................................................................. 1
1.1 SYSTEM OVERVIEW................................................................................ 1
1.2 FEATURES................................................................................................... 1
2. SPECIFICATIONS ................................................................................................ 1
3. SYSTEM BOARD LAYOUT .............................................................................. 1
3.1 PT-5IT VER. 1.x.......................................................................................... 1
4. HARDWARE SETUP ........................................................................................... 2
4.1 UNPACKING ............................................................................................... 2
4.2 HARDWARE CONFIGURATION........................................................... 2
4.2.1 DRAM INSTALLATION...........................................................................2
4.2.2 L2 CACHE MEMORY INSTALLATION.............................................3
4.2.3 CONNECTORS............................................................................................ 4
4.2.4 JUMPERS ..................................................................................................... 8
5. AWARD BIOS SETUP ........................................................................................ 1
5.1 GETTING STARTED ................................................................................ 1
5.2 MAIN MENU............................................................................................... 2
5.3 CONTROL KEYS....................................................................................... 2
5.4 STANDARD CMOS SETUP..................................................................... 3
5.5 BIOS FEATURES SETUP ........................................................................ 4
5.6 CHIPSET FEATURES SETUP ................................................................ 6
5.7 POWER MANAGEMENT SETUP.......................................................... 7
5.8 PNP/PCI CONFIGURATION ................................................................... 7
5.9 INTEGRATED PERIPHERALS .............................................................. 11
THE OTHER SETUPS ....................................................................................... 12
PT-5IT SYSTEM BOARD
ii
TRADEMARKS
All trademarks used in this manual are the property of their respective owners.
NOTE
The “LOAD SETUP DEFAULTS” function loads the default settings directly from
BIOS default table, these default settings are the best-case values that should optimize
system performance and increase system stability . This function will be necessary
when you accept this system board, or the system CMOS data is corrupted.
By pressing “Enter ” key. the SETUP default values will be loaded. (please refer to the
Chapter 5 AWARD BIOS SETUP procedures in this maulal.)
NOTICE
Information presented in this manual has been carefully checked for reliability;
however, no responsibility is assumed for inaccuracies. The information contained in
this manual is subject to change without notice.
PT-5IT SYSTEM BOARD INTRODUCTION
1
I. INTRODUCTION
A. SYSTEM OVERVIEW
ThePT-5ITPentium PCI Local Bus system board is designed based on the Intel
82430TX PCIset system chipset and Winbond I/O chipset, which built-in two channels
PIO and Bus Master Enhanced PCI IDE port, one Floppy Disk control port, two high
speed Serial ports (UARTs) and one multimode Parallel prot and also supports IR and
USB ports. It is designed to fit a high performance, Pentium 75 MHz to 233 MHz based
solution for high-end and true GREEN-PC computer systems.
This system board supports the Peripheral Component Interconnect (PCI) Local Bus
standard (PCI Specification Rev. 2.1 compliant). It not only breaks through the I/O
bottlenecks of the traditional ISA main board, but also provides the performance needs
for networking and multi-user environments.
A. FEATURES
The PT-5IT system board contains the following features:
Pentium P54C/P54CT/P54CS/P55C, Cyrix 6x86 / 6x86L & AMD K5 /K6 based,
PC/AT compatible system board with ISA Bus and PCI Local Bus.
Supports the most part of "586" level CPUs designed by Intel, Cyrix and AMD.
Built-in 2 sets voltage regulator circuit to support multi-specification CPU I/O
voltage (+3.3V DC and +3.52V DC) and CPU CORE voltage (+2.8V DC).
DRAM Memory : Supports fast page mode (FPM), Extended Data Out (EDO) and
SDRAM (synchronous) memory.
Cache Memory : Supports pipelined burst SRAMs. Cache size up to 512KB.
BIOS : Supports Plug and Play BIOS.
IDE ports : Supports two channels PIO and Bus Master Enhanced PCI IDE
port, up to Mode 4 timing, and up to 14 MBytes/s transfer rates.
Supports “Ultra DMA 33” transfers up to 33 MBytes/sec.
PT-5IT SYSTEM BOARD INTRODUCTION
2
I/O ports : Supports two high speed serial ports (UARTs), One multimode
parallel port for standard (SPP), enhanced (EPP) and high speed
(ECP) modes. One Floppy Disk Control port.
IR Port : Supports IR (Infrared Rays) functions. Both HPSIR and ASKIR
are supported.
USB Ports : Supports two Universal Serial Bus (USB) ports.
Software : MS-DOS, WindowsNT, OS2, XENIX, UNIX, NOVELL, CAD
compatibility / CAM, compatibility Windows, Windows 95....etc.
PT-5IT SYSTEM BOARD SPECIFICATIONS
1
I. SPECIFICATIONS
Chipset
Intel 82439TX, 82371AB and Winbond W83977TF.
CPU
Intel : Pentium processor and OverDrive processor (P54C / P54CS / P54CTB /
P55C) 75 / 90 / 100 / 120 / 133 / 150 / 166 / 180 / 200 / 233 MHz.
Cyrix : 6x86 / 6x86L - P120+ / P133+ / P150+ / P166+ / P200+.
AMD : K5-PR75 / PR90 / PR100 / PR120 / PR133 / PR150 / PR166 and K6.
CPU VCC
(1).CPU I/O voltage : "+3.3V DC" and "+3.52V DC".
(2).CPU CORE voltage : "+2.8V DC".
System Clock
50 / 55 / 60 / 66.6 / 75MHz adjustable.
Memory
DRAM : Two banks, each bank could be single or double sided, 8MB up to
256MB. Supports fast page mode (FPM) , Extended Data Out (EDO)
and SDRAM memory (Using 72-pin SIMM module x4, and 168-pin
DIMM module x2). DIMMs' operating voltage supports +5V DC or
+3.3V DC adjustable. 5 Qword deep buffer for posted write, and
Dword and Burst merging.
SRAM : 256KB or 512KB pipelined burst SRAM on board , supports
Direct-Mapped write back cache memory.
BIOS
AWARD System BIOS. 128KBx8 Flash ROM (for Plug & Play BIOS).
Expansion Slots
PCI Slots : 32-bit x 4 (All Master/Slave, PCI 2.1 Compliant).
ISA Slots : 16-bit x4 (One slot PCI/ISA shared).
PT-5IT SYSTEM BOARD SPECIFICATIONS
2
IDE Ports
Two channel PIO and Bus Master PCI IDE ports, maximum could be connected to
4 IDE Hard Disk and ATAPI CD-ROM device. Supports up to Mode 4 timing, and
up to 22 MBytes/s transfer rates and supports Ultra DMA 33 mode transfers up to
33MBytes/sec.
Super I/O Ports
1. Two high speed NS16C550 compatible serial ports (UARTs).
2. One SPP/EPP/ECP mode Bi-directional parallel port.
3. One Floppy Disk Control port.
IR Port
One HPSIR and ASKIR compatible Infrared port.
Mouse and Keyboard
Supports PS/2 Mouse connector, PS/2 Keyboard connector (option) and AT
Keyboard connector.
USB Ports
Two Universal Serial Bus (USB) ports.
DIMENSION
Width & Length : 220 mm x 255 mm.
Height : 3/4 inches with components mounted, but without expansion
boards and cables.
PCB Thickness : 4-layers, 0.05 inches normal.
Weight : 20 ounces.
ENVIRONMENT
Operating Temperature : 10to 40. (50to 104)
Require Airflow : 50 linear feet per per minute across CPU.
Storage Temperature : -40to 70. (-40to 158)
Humidity : 0 to 90noncondensing.
Altitude : 0 to 10,000 feet.
PT-5IT SYSTEM BOARD HARDWARE SETUP
1
I. SYSTEM BOARD LAYOUT
A. PT-5IT VER. 1.x
Explanation : ll connectors, jumpers and components which marks by a black point on
the corner means the pin-1 side of the connector, jumper and component.
PCI 3
PCI 2
SL3
CN1 POWER CON.
CN5
AT K/B
SIMM 4
SIMM 3
SIMM 2
SIMM 1
Intel
82439TX
BAT 1
CPU
CN8 LPT
COM B
CN10
CN2
PS/2
MS.
CN11
IR
JP13
CN13
U1 TAG
SPEAKER
KEYLOCK
HL
TL
TS
RS
Winbond
W83977TF
SL2
SL4
JP6
JP12
Socket 7
CN9
COM A
U7
JP2
CN12
USB 2 USB 1
JP4
JP5
U8
SL1
Intel
82371AB
JP11
JP8
JP10
JP7
JP1
SL1
PCI 4
PCI 1
SL2
SL3
SL4
CN6 FDC.
CN3 IDE2
CN7 IDE1
DIMM 1
DIMM 2
CN14
JP4
JP3
Burst
Pipeline
SRAM
32K/64K *32
Pipeline
Burst
SRAM
32K/64K *32
JP9
SYS. BIOS
PT-5IT SYSTEM BOARD HARDWARE SETUP
2
I. HARDWARE SETUP
A. UNPACKING
The system board package should contain the following parts :
The PT-5IT system board.
OPERATION MANUAL.
Cable set for IDE and I/O device.
A. HARDWARE CONFIGURATION
Before the system board is ready to operate, the hardware must be configured to allow
for various functions within the system. To configure the PT-5IT system board is a
simple task, only a few jumpers, connectors, cables and sockets needs to be selected and
installed. (For the detailed locations of each component please refer to the "system
board layout figure" which appears in page 3-1.)
1. DRAM INSTALLATION
The PT-5IT system board will support two banks main memory (bank0 and bank 1) on
board, (using four 72-Pin SIMM socket, SIMM 1 - 4 and two 168-pin DIMM socket,
DIMM 1 - 2) each bank could be single-sided or double-sided, 8MB up to 256 MB of
local memory can be attained. Supports standard fast page mode (FPM), Extended Data
Out (EDO) and synchronous (SDRAM) memory.
The usable DRAM modules are : (Note : S = Single-sided , D = Double-sided)
(1) FPM and EDO memory : 512Kbx32 ( 2MB),1Mbx32 ( 4MB),
2Mbx32 ( 8MB),4Mbx32 (16MB),
8Mbx32 (32MB), 16Mbx32 (64MB)
(2) SDRAM memory : 1Mbx64 ( 8MB),2Mbx64 (16MB),
4Mbx64 ( 32MB), 8Mbx64 (64MB)
16Mbx64 (128MB).
The speed of FPM DRAMs must be used 70ns or faster than 70ns, the speed of EDO
DRAMs and SDRAMs must be used 60ns or faster than 60ns.
SIMMs' and DIMM's operating voltage :
PT-5IT SYSTEM BOARD HARDWARE SETUP
3
(1) SIMM1 - SIMM4 : + 5V DC
(2) DIMM1 - DIMM2 : +3.3V DC or +5V DC
(factory default at +3.3V DC, adjusted by “purchase order”)
DRAM Bank can be populated in any order (bank 0 does not have to be populated
before bank 1).Within any given bank, the SIMMs (DIMM) must be the same size.
Among the two banks, SIMM (DIMM) densities can be mixed in any order. EDO, FPM
and SDRAMs can be mixed between SIMMs (DIMM), a given SIMM (DIMM) must
contain only one type of DRAM. When DRAM types are mixed each SIMM (DIMM)
runs optimized for that particular type of DRAM.
There is no jumper needed for DRAM configuration, DRAMs' type and size will be
detected by system BIOS automatically.
The following table provides the possable combinations for DRAM memory
installation.
Bank 0 Bank 1
SIMM1 and SIMM2 DIMM1 SIMM3 and SIMM4 DIMM2
Single-sided Empty Single-sided Empty
Double-sided Empty Double-sided Empty
Empty Single-sided Empty Single-sided
Empty Double-sided Empty Double-sided
Note : We strong recommend, Don't install 5V SIMM module and 3.3V DIMM
modules at the same time.
1. L2 CACHE MEMORY INSTALLATION
The PT-5IT system board will support 256KB or 512KB cache memory on board, using
synchronous pipeline-burst SRAMs. Both Write Back and Write Through cache update
policy are supported.
The following table lists the detalied combination about cache memory installation.
Cache Size Data SRAMs(U7 , U8) Tag SRAMs(U1)
256 KB 32KB x 32 8KB or 16KB or 32KB x 8
512 KB 64KB x 32 16KB or 32KB x 8
PT-5IT SYSTEM BOARD HARDWARE SETUP
4
1. CONNECTORS
A connector is two or more pins that are used make connections to the system standard
accessories (such as power, mouse, printer,...etc.) The following is a list of connectors
on board, as well as descriptions of each individual connector.
(A) BAT1 Non-Rechargeable battery (Using 3 Vlots Lithium battery : CR2032)
Pin # Assignment
Battery Positive
Ground
(B) CN1 Power connector
Pin # Assignment Pin # Assignment Pin # Assignment
1PowerGood5Ground 9-5VDC
2 +5V DC 6 Ground 10 +5V DC
3 +12V DC 7 Ground 11 +5V DC
4 -12V DC 8 Ground 12 +5V DC
(C) CN2 PS/2 Mouse converted connector
Pin # Assignment Pin # Assignment Pin # Assignment
1 Mouse Data 3 Ground 5 Mouse Clock
2 No Connection 4 +5V DC
(D) CN3 IDE 2 connector (Secondary IDE Port, using MIRQ0)
(E) CN4 PS/2 Keyboard connector (option)
Pin # Assignment Pin # Assignment Pin # Assignment
1 Keyboard Data 3 Ground 5 Keyboard Clock
2 No Connection 4 +5V DC 6 No Connection
(F) CN5 AT Keyboard connector
Pin # Assignment Pin # Assignment Pin # Assignment
1 Keyboard Clock 3 No Connection 5 +5V DC
2 Keyboard Data 4 Ground
(G) CN6 Floppy Disk Control Port connector (Using IRQ6, DMA channel 2)
(H) CN7 IDE 1 connector (Primary IDE Port, using IRQ14)
PT-5IT SYSTEM BOARD HARDWARE SETUP
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(I) CN8 Parallel Port connector
(Supports SPP/EPP/ECP mode, selected by BIOS setup,using IRQ7 or
IRQ5, ECP using DMA channel 3 or 1)
114 Pin# Assignment Pin # Assignment
1 STROBE- 14 AUTO FEED-
2 Data Bit 0 15 ERROR-
3 Data Bit 1 16 INIT-
4 Data Bit 2 17 SLCT IN-
5 Data Bit 3 18 Ground
6 Data Bit 4 19 Ground
7 Data Bit 5 20 Ground
8 Data Bit 6 21 Ground
9 Data Bit 7 22 Ground
10 ACK- 23 Ground
11 BUSY 24 Ground
12 PE 25 Ground
13 SLCT 26 N.C. (No Connection)
13 26
(J) CN9 COM B (Serial Port 2) connector
COM1/2/3/4, selected by BIOS setup, using IRQ3 or 4
12 Pin# Assignment Pin # Assignment
1 DCD (Data Carrier Detect) 2 RD (Received Data)
3 TD (Transmit Data) 4 DTR (Data Terminal
Ready)
5 Ground 6 DSR (Data Set Ready)
7 RTS (Request To Send) 8 CTS (Clear To Send)
9 RI (Ring Indicator) 10 NC (No Connection)
910
PT-5IT SYSTEM BOARD HARDWARE SETUP
6
(K) CN10 COM A (Serial Port 1) connector
COM1/2/3/4, selected by BIOS setup, using IRQ4 or 3
12 Pin# Assignment Pin # Assignment
1 DCD (Data Carrier Detect) 2 RD (Received Data)
3 TD (Transmit Data) 4 DTR (Data Terminal
Ready)
5 Ground 6 DSR (Data Set Ready)
7 RTS (Request To Send) 8 CTS (Clear To Send)
9 RI (Ring Indicator) 10 NC (No Connection)
910
(L) CN11 IR (Infrared Rays) transmission connector
Pin # Assignment Pin # Assignment Pin # Assignment
1 +5V DC 3 IR Receive 5 IR Transmit
2 No Connection 4 Ground
(M) CN12 USB 1 (Universal Serial Bus port1) connector
(N) CN13 USB 2 (Universal Serial Bus port2) connector
(O) CN14 Cooling fan power connector
Pin # Assignment
1 +12V DC
2 Ground
(P) RS Reset Button connector
Pin # Assignment Pin1&2 Function
1 Reset Control Open No action
2 Ground Short System Reset
(Q) HL IDE HDD LED connector
Pin # Assignment
1 Pullup (+5V DC)
2 Signal Pin
(R) TL Turbo LED connector
Pin # Assignment
PT-5IT SYSTEM BOARD HARDWARE SETUP
7
1 Pullup (+5V DC)
2 Signal Pin
(S) TS Turbo Switch connector (This function is reserved)
Pin # Assignment Pin1&2 Function
1 Turbo Control Open Turbo
2 Ground Short Normal
(T) SPEAKER Speaker connector
Pin # Assignment Pin # Assignmen
1+5VDC 4SpeakerDataSignal
2 No Connection 5 No Connection
3 No Connection
(U) KEY LOCK Front Panal Power LED & Key-Lock connector
Pin # Assignment
1 Pullup (+5V DC for Power LED)
2 No Connection
3 Ground
4 Keyboard Lock
5 Ground
Explanation : ( For next section : JUMPERS )
open
1-2
1
2-3
1
1
11
short
,
,
PT-5IT SYSTEM BOARD HARDWARE SETUP
8
1. JUMPERS
A jumper is two, three or more pins which may or may not be covered by a plastic
connector plug (mini-jumper). A jumper is used to select different system options.
Please make sure all jumpers at correct position before this system board used.
(A) JP5, JP6, JP7, JP8, JP9 CPU type selection
(1) INTEL Pentium CPUs
CPU Type JP5 JP6 JP7 JP8 JP9 Remark
80502-75 1-2 1-2 1-2 open open
80502-90 2-3 1-2 1-2 open open
80502-100 1-2 2-3 1-2 open open
80502-120 2-3 1-2 1-2 short open
80502-133 1-2 2-3 1-2 short open
80502-150 2-3 1-2 1-2 short short
80502-166 / 80503-166 1-2 2-3 1-2 short short
80502-180 2-3 1-2 1-2 open short
80502-200 / 80503-200 1-2 2-3 1-2 open short
80503-233 1-2 2-3 1-2 open open
(2) Cyrix 6x86 / 6x86L CPUs
CPU Type JP5 JP6 JP7 JP8 JP9 Remark
6x86 / 6x86L - P120+ 1-2 1-2 1-2 short open
6x86 / 6x86L - P133+ 1-2 1-2 2-3 short open
6x86 / 6x86L - P150+ 2-3 1-2 1-2 short open
6x86 / 6x86L - P166+ 1-2 2-3 1-2 short open
6x86 / 6x86L - P200+ 2-3 1-2 2-3 short open
PT-5IT SYSTEM BOARD HARDWARE SETUP
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(3) AMD K5 /K6 CPUs
CPU Type JP5 JP6 JP7 JP8 JP9 Remark
AMD-K5-PR75 1-2 1-2 1-2 open open
AMD-K5-PR90 2-3 1-2 1-2 open open
AMD-K5-PR100 1-2 2-3 1-2 open open
AMD-K5-PR120 2-3 1-2 1-2 open open
AMD-K5-PR133 1-2 2-3 1-2 open open
AMD-K5-PR150 1-2 1-2 2-3 short short
AMD-K5-PR166 1-2 2-3 1-2 short short
AMD-K6-PR166 1-2 2-3 1-2 short short
AMD-K6-PR200 1-2 2-3 1-2 open short
(B) JP10, JP11, JP12 CPU operating voltage selection
Note :For the detailed CPU-VCC requirement, please inquire of your CPU
supplier.
CPU VCC
I/O CORE JP10 JP11 JP12 Remark
voltage voltage
+ 3.52 V 1-2 1-2 1-2 *
+ 3.3 V + 2.8 V 2-3 2-3 2-3 **
Remark :
* : For the single-VCC required CPUs. (e.g. Intel P54C, Cyrix 6x86,
AMD-K5-xxAB?,AMD-K5-xxAC?, AMD-K5-xxAF? ... etc.)
** : For the dual-VCC required CPUs.(e.g. Intel P55C,Cyrix 6x86L,
AMD-K5-xxAH? ,AMD-K5-xxAJ? ,AMD-K6... etc.)
(C) JP4 Clear CMOS button
Pin # Function
1-2 Normal operation
2-3 Clear CMOS (Note : Don't forget to turn this jumper
return 1-2 within 3 to 5 seconds)
PT-5IT SYSTEM BOARD HARDWARE SETUP
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(D) JP13 ROM BIOS selection
Pin # Function
1-2 for +5V FLASH ROM
2-3 for +12V FLASH ROM
(E) JP2,JP3 DIMM voltage selection
Pin # Function
1-2 +5V DC
2-3 +3.3V DC (Factory default)
1
I. AWARD BIOS SETUP
A. GETTING STARTED
When the system is first powered on or reset, the BIOS will enter the Power-On Self
Test routines ( POST : Display a copyright message on the screen followed by a
diagnostics and initialization procedure.) (If an EGA or VGA card is installed, the
copyright message of the video card maybe displayed on the screen first.) The BIOS
will indicate any error or malfunction by a series of beeps or display the error message
on screen.
Normally, the simulate figure 5-1 will display on the screen when the system is powered
on.
Fig. 5-1 Initial Power-On screen.
After the POST routines are completed, the following message appears :
" Press DEL to enter SETUP "
PT-5IT SYSTEM BOARD AWARD BIOS SETUP
2
To execute the Award BIOS Setup program, press DEL key. The simulate screen in
figure 5-2 MAIN MENU will be displayed at this time.
A. MAIN MENU
ROM PCI / ISA BIOS (2A59IXXX)
CMOS SETUP UTILITY
AWARD SOFTWARE, INC.
STANDARD CMOS SETUP SUPERVISOR PASSWORD
BIOS FEATURES SETUP USER PASSWORD
CHIPSET FEATURES SETUP IDE HDD AUTO DETECTION
POWER MANAGEMENT SETUP HDD LOW LEVEL FORMAT
PNP/PCI CONFIGURATION SAVE & EXIT SETUP
INTEGRATED PERIPHERALS EXIT WITHOUT SAVING
LOAD SETUP DEFAULTS
ESC : Quit : Select Item
F10 : Save & Exit Setup (Shift)F2 : Change Color
Time, Date, Hard Disk Type ...
Fig. 5-2 CMOS SETUP MAIN MENU screen.
A. CONTROL KEYS
Listed below is an explanation of the keys displayed at the bottom of the screens
accessed through the BIOS SETUP program :
Arrow Keys : Use the arrow keys to move the cursor to the desired item.
Enter : To Select the desired item.
F1 : Display the help screen for the selected feature.
(Shift)F2 : To change the screen color, total 16 colors.
ESC : Exit to the previous screen.
PgUp(-)/PgDn(+) : To modify the default value of the options for the highlighted
feature.
PT-5IT SYSTEM BOARD AWARD BIOS SETUP
3
F5 : Retrieves the previous CMOS values from CMOS, only for the
current option page setup menu.
F7 : Loads the SETUP default values from BIOS default table, only
for the current option page setup menu.
F10 : Save all changes made to CMOS RAM, only for the MAIN
MENU.
The following pages will show the simulate screens of CMOS SETUP, each figure
contains the setup items and the default settings of them. Below each figure may or may
not be contained a lists of function description for commonly used settings. For the
other settings' function description you needed, please feel free to contact with your
supplier.
A. STANDARD CMOS SETUP
ROM PCI / ISA BIOS (2A59IXXX)
STANDARD CMOS SETUP
AWARD SOFTWARE, INC.
Date (mm : dd : yy) : Thu, Apr 3 1997
Time (hh : mm : ss) : 11 : 33 : 55
HARD DISKS TYPE SIZE CYLS HEAD PRECOMP LANDZ SECTOR MODE
Primary Master Auto 0 0 0 0 0 0 Auto
Primary Slave None 0 0 0 0 0 0 ------
Secondary Master Auto 0 0 0 0 0 0 Auto
Secondary Slave None 0 0 0 0 0 0 ------
Drive A : 1.44M, 3.5 in.
Drive B : None Base Memory : 640 K
Extended Memory : xxxxxx K
Video : EGA/VGA Other Memory : xxxxxx K
Halt On : All Errors Total Memory : xxxxxx K
ESC : Quit : Select Item PU/PD/+/- : Modify
F1 : Help (Shift)F2 : Change Color
Fig. 5-3 STANDARD CMOS SETUP screen.
MODE :
For IDE hard disks, this BIOS provides three modes to support both normal size IDE
hard disks and also disks size larger the 528MB:
NORMAL : For IDE hard disks size smaller then 528MB.
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