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ALI Aladdin IV+ Chipset - 66/75/83 MHz Front Side Bus

The Chipset Guide
By

Core Logic for Pentium /M1/M2/K5/K6 based Business and Multimedia PCs

Aladdin-IV is the fourth generation chipset from AcerLabs. It maintains the best system architecture (2-chip solution) to achieve the best system performance with the lowest system cost (TTL-free). Aladdin-IV consists of two BGA chips to give the 586-class system a complete solution with most up-to-date features and architecture for the most engaging multimedia/ multi-threading OS and software applications. It utilizes the modern BGA package to improve the AC characterization, resolves system bottleneck and make thesystem manufacturing easier.

M1531 includes the higher CPU bus frequency (up to 83.3 MHz) interface for the incoming Cyrix M2 and AMD K6, PBSRAM and Memory Cache L2 controller, internal MESI tag bits (8K*2) to reduce cost and enhance performance, high performance FPM/EDO/SDRAM DRAM controller, PCI 2.1 compliant bus interface, smart deep buffer design for CPU-to-DRAM, CPU-to-PCI, and PCI-to-DRAM to achieve the best system performance, and also the highly efficient PCI fair arbiter. M1531 also provides the most flexible 32/64 bit memory bus interface for the best DRAM upgrade ability and ECC/Parity design to enhance the system reliability.

With the concurrent bus design, PCI-to-PCI access can run concurrently with CPU-to-L2 and CPU-to-DRAM access, PCI-to-DRAM access can run concurrently with CPU-to-L2 access. M1531 also supports the snoop ahead feature to achieve the PCI master full bandwidth access (133 MBytes). M1531 also provides the enhanced power management features including ACPI support, suspend DRAM refresh, and internal chip power control to support Microsoft On Now technology OS.

M1543 provides the best desktop system solution. M1543 integrates ACPI support, green function, 2-channel dedicated Ultra-33 IDE Master controller, 2-port USB controller, SMBus controller, PS/2 Keyboard/Mouse controller and the Super I/O (Floppy Disk Controller, 2 serial port/1 parallel port) support.

The built-in I/O in M1543 is an advanced Super I/O controller solution to the basic IBM PC, XT, AT and notebook peripherals. It incorporates two full function universal asynchronous receiver/ transmitters (UARTs), a flexible high performance internal data separator with send/ receive 16 Byte FIFOs. It is suitable for notebook computers since it has Serial Infra Red for wireless communications with other devices. It can swap your drives A & B. It features basic functions such as standard mode, enhanced mode, high speed mode. It supports SPP, PS/2, EPP and ECP parallel port. It also has a programmable baud rate generator. It has high performance power management for FDC, UART and parallel port.

Furthermore, Aladdin IV+ is designed to meet the requirements of all 586-class PCs including multimedia, business and high performance CPU file servers.

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