Acer M1A Manuals





System Board System Board 1-1 The M1A is a high-performance Pentium PCI-based system board that supports the 64-bit Pentium microprocessor running at 75/90/100/120/133/150/166 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 100/120/132 MB per second transfer rate in burst mode. The board has two memory banks composed of two 72-pin SIMM sockets each that support a maximum system memory of 128 MB using 32-MB SIMMs. The onboard 1-MB video memory is upgradable to 2 MB for a higher video resolution. The system board features a slot for the PCI/ISA slot board and two Mode 4 PCI enhanced IDE interfaces that support up to four IDE devices. A 50-pin Fast SCSI-II interface with 10 MB/s transfer rate come with the system board to connect SCSI devices. Standard I/O features such as two serial ports (COM1, COM2), one parallel port, a diskette drive interface, and PS/2 mouse and keyboard connectors reside on the system board.