Acer ACERMATE 960, ACERBASIC II User Manual
& K DSWHU
System Board
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 microproces sor 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 f or 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. Onboar d I/O interfaces c omprise
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.
System Board 1-1
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 RO M 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)
•
1-2 User’s Guide
1.1.1 System Board
23456
715
6
4
Figure 1-1 shows the locations of the system board major
components.
13
1
12
1
1
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
Figure 1-1 System Board Layout
10
9
8
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
11
System Board 1-3
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 enhanc ements 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)
1-4 User’s Guide
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)
System Board 1-5
Figure 1-6 3-ISA Slot Board (for AcerBasic system)
Refer to the corresponding housing manual
for slot board installation instructions.
1-6 User’s Guide
1.2 Jumpers and Connectors
1.2.1 Jumper and Connector Locations
Figure 1-7 shows the jumper and connector locations on the s yst em
board.
Figure 1-7 System Board Jumper and Connector Locations
The blackened pin of a jumper represents
pin 1.
System Board 1-7
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
JP3 1-2*
2-3
JP4 1-2
2-3*
JP6 1-2*
2-3
JP7 1-2*
2-3
JP18 1-2
2-3*
JP19 1-2*
2-3
JP20 1-2 and 4-5*
2-3 and 5-6
Onboard VGA
Disabled
Enabled
BIOS Type
Acer BIOS
OEM BIOS
Password Security
Check password
Bypass password
Cache Size
256 KB
512 KB
BIOS ROM Type
Block ROM (2 Mbit)
Flash ROM (Intel 28F001)
LED Functions
IDE and FDD LED
IDE LED only
External Switch
Suspend button
Reset button
Software Shutdown
Software shutdown
Appears off
See Table 1-2 for the specif ic settings of j umpers JP8-J P15 and JP17
when selecting the CPU type and speed.
*
Default setting
1-8 User’s Guide
Table 1-2 CPU Type Selection
Jumper
CPU
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
JP8 JP9 JP13 JP14 JP15 JP17
System Board 1-9
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