Acer V12LC Manuals

&KDSWHU  System Board System Board 1-1 The V12LC is a high-performance Pentium PCI-based system board that supports the 64-bit Pentium microprocessor running at 75/90/100/120/133/150 MHz and has a 16-KB internal write-back cache. It utilizes the Peripheral Component Interconnect (PCI) local bus architecture. The PCI local bus 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. The system board features a slot for the PCI/ISA slot board and two PCI enhanced IDE interfaces with a zero-wait state 11 MB per second transfer rate and support up to four IDE devices. It has buffered serial ports that reduce the number of interrupts to avoid slowing other system activities. With the optional ECP/EPP function, the parallel port transfers data at a fast 2 MB to 10 MB. The system board has two DRAM banks composed of four 72-pin sockets that support both single- and double-density SIMMs for a maximum memory of 128 MB.

Addendum V12LC System User’s Guide PART NO. 49.56701.001 Note the following changes to the V12LC System User’s Guide. Page 1-1 and 1-2 • The system board supports Pentium CPUs running at 75, 90, 100, 120, and 133 MHz. Page 1-3 • Jumpers JP7 and JP9 do not appear on the system board anymore. • Item #13 on the system board layout should read “Multifunction connectors”. Page 1-11 and 1-12 • Jumpers JP7 and JP9 are deleted from the system board. • Delete JP7 and JP9 from the jumper settings table. Page 2-12 and 2-14 • The items “Memory at 15MB-16MB Reserved for” and “System Memory Parity” in the Advanced Configuration screen are switched. Page 2-21 • The parallel port settings should have their respective IRQ assignments as follows: 3BCh (IRQ 7), 378h (IRQ 7), and 278h (IRQ 5). Page 2-21 • The default value of item 1F0h-1FFh on page 2 of the Non-PnP ISA Card Configuration screen should appear as [---]. • The Non-PnP ISA Card Configuration screen page 3 is deleted.