Acer V56LA Bedienungsanleitung
& K DSWHU
System Board
System Board 1-1
The V56LA is a high-performance system board with a 64-bit
architecture. It supports the Intel P54C and P55C CPUs running at
100/120/133/150/166/200 MHz. It also supports 6x86/6x86L
Cyrix/IBM and AMD K5/K6 CPUs. The system board utilizes the
Peripheral Component Interconnect (PCI) local bus architecture that
maximizes the system performance by enabling high-speed
peripherals to match the speed of the microprocessor with its 120 MB
or 132 MB per second transfer rate in burst mode.
A 1-MB or 2-MB SGRAM comes mounted onboard. Two DRAM
banks composed of four 72-pin sockets come with the board to
support single- and double-density SIMMs for a maximum system
memory of 128 MB. The SIMM sockets accommodate both the
standard page mode and extended data output (EDO) type SIMMs.
The board supports a 256-KB or 512-KB pipeline burst second-level
cache.
The system board includes a 188-pin connector for the slot board that
contains the PCI and ISA bus slots. The two onboard PCI-enhanced
IDE interfaces with a zero-wait state and 16.6 MB per second transfer
rate support up to four IDE devices. Onboard I/O interfaces comprise
of two UART 16550 serial ports, a parallel port with ECP/EPP feature,
and PS/2 keyboard and mouse ports.
As added enhancements, the board also incorporates a Sound Blaster
Pro-compatible audio subsystem plus plug-and-play (PnP), power
management, and software shutdown features.
1-2 User’s Guide
1.1 Major Components
The system board has the following major components:
•A zero-insertion force (ZIF) socket for Intel Pentium and
Pentium/MMX, 6x86/6x86L Cyrix/IBM, and AMD K5/K6
•Two DRAM banks composed of four 72-pin SIMM sockets that
support 4/8/16/32-MB 60/70ns SIMMs
•256/512-KB write-back pipeline burst second-level cache
•128/256-KB boot block mode Flash ROM for system BIOS, VGA
BIOS, and PnP ESCD
•Two PCI-enhanced IDE interfaces that support up to four IDE
devices
•System clock/calendar with 256-byte CMOS RAM
•Standard 1-MB SGRAM onboard
•188-pin connector for PCI/ISA slot board
•Feature socket for multimedia or Ethernet solution
•168-pin cache module socket for cache upgrade
•External ports:
•PS/2 keyboard and mouse ports
•Two buffered high-speed serial ports
•One ECP/EPP high-speed parallel port
•Video port
•RJ-45 connector (optional)
System Board 1-3
1.1.1 System Board
Figure 1-1 shows the locations of the system board major
components.
1 RJ-45 connector (optional)
2 Keyboard port
3 Mouse port
4 Serial port 1
5 Serial port 2
6 Parallel port
7 Video port
8 Tag SRAM
9 SIMM sockets
10 CPU socket
11 Pipeline burst second-level
cache upgrade socket (optional)
12 Second-level cache onboard
13 CPU voltage regulators
14 Battery
15 Power connector
16 BIOS
Figure 1-1 System Board Layout
1
2
3
4
5
6
7
1
5
1
6
1
4
9
8
10
11
12
13
1-4 User’s Guide
1.1.2 Slot Boards
The system board comes with a slot board already installed. The slot
board carries the PCI and ISA bus slots for system enhancements and
future expansion.
The slot board may vary in size and layout depending on your system
housing. Figures 1-2 to 1-6 show the slot board types.
Figure 1-2 2-PCI/3-ISA Slot Board (for desktop systems)
Figure 1-3 3-PCI/4-ISA Slot Board (for minitower systems)
System Board 1-5
Figure 1-4 2-PCI/3-ISA Slot Board (for Aspire desktop systems)
Figure 1-5 3-PCI/4-ISA Slot Board
(for Aspire minitower systems)
1-6 User’s Guide
Figure 1-6 3-ISA Slot Board (for AcerBasic system)
Refer to the corresponding housing manual
for slot board installation instructions.
System Board 1-7
1.2 Jumpers and Connectors
1.2.1 Jumper and Connector Locations
Figure 1-7 shows the jumper and connector locations on the system
board.
Figure 1-7 System Board Jumper and Connector Locations
The blackened pin of a jumper represents
pin 1.
1-8 User’s Guide
1.2.2 Jumper Settings
Table 1-1 lists the system board jumpers with their corresponding
settings and functions.
Table 1-1 System Board Jumper Settings
Jumper Setting Function
JP1 1-2
2-3*
Onboard VGA
Disabled
Enabled
JP3 1-2*
2-3
BIOS Type
Acer BIOS
OEM BIOS
JP4 1-2
2-3*
Password Security
Check password
Bypass password
JP6 1-2*
2-3
Cache Size
256 KB
512 KB
JP7 1-2*
2-3
BIOS ROM Type
Block ROM (2 Mbit)
Flash ROM (Intel 28F001)
JP18 1-2
2-3*
LED Functions
IDE and FDD LED
IDE LED only
JP19 1-2*
2-3
External Switch
Suspend button
Reset button
JP20 1-2 and 4-5*
2-3 and 5-6
Software Shutdown
Software shutdown
Appears off
See Table 1-2 for the specific settings of jumpers JP8-JP15 and JP17
when selecting the CPU type and speed.
*Default setting
System Board 1-9
Table 1-2 CPU Type Selection
Jumper
CPU JP8 JP9 JP13 JP14 JP15 JP17
Pentium
P-100 3-6 ON 1-2 1-2 1-2 1-2
P-120 2-5 ON 1-2 1-2 1-2 2-3
P-133 3-6 ON 1-2 1-2 1-2 2-3
P-150 2-5 ON 1-2 1-2 2-3 2-3
P-166 3-6 ON 1-2 1-2 2-3 2-3
P-200 3-6 ON 1-2 1-2 2-3 1-2
Pentium ODP/MMX
166 3-6 OFF 1-2 1-2 2-3 2-3
200 3-6 OFF 1-2 1-2 2-3 1-2
AMD K5
PR120 2-5 ON 1-2 1-2 1-2 1-2
PR133 3-6 ON 1-2 1-2 1-2 1-2
PR150 2-5 ON 1-2 1-2 1-2 2-3
PR166 3-6 ON 1-2 1-2 1-2 2-3
Cyrix/IBM 6x86
P120+ 1-4 ON 1-2 1-2 1-2 2-3
P150+ 2-5 ON 1-2 1-2 1-2 2-3
P166+ 3-6 ON 1-2 1-2 1-2 2-3
Cyrix/IBM 6x86L
P120+ 1-4 OFF 1-2 1-2 1-2 2-3
P150+ 2-5 OFF 1-2 1-2 1-2 2-3
P166+ 3-6 OFF 1-2 1-2 1-2 2-3
1-10 User’s Guide
1.2.3 Connector Functions
Table 1-3 lists the different connectors on the system board and their
respective functions.
Table 1-3 Connector Functions
Connector Function
CN1 Video port
CN3 Fax/modem/voice-in connector
CN4 Audio I/O board connector
CN5 Line-in for AMC connector
CN6 Slot board connector
CN7 ATI media connector
CN8 CD-in connector
CN10 WaveTable connector
CN11 IDE 1 connector
CN12 IDE 2 connector
CN13 Power connector
CN14 Software shutdown connector
CN15 Active/LED connector
CN17 Reset/LED connector
CN18 IrDA connector (optional)
CN20 FDD/HDD LED connector
CN21 Power switch connector
FD1 Diskette drive connector
FN1 CPU fan connector
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