AR-B1474 User¡¦s Guide

OnBoard FDC

This option enables the floppy drive controller on the AR-B1474.

OnBoard IDE

This option Enabled/Disabled the use of the IDE controller on the AR-B1474.

Parallel Port Address

This option is used to select the port address and the IRQ of the on-board parallel port. The addresses are 378H, 278H, 3BCH, and Disable. The IRQs are IRQ5 & IRQ7 for selecting.

Parallel Port Mode

This option is specifies the parallel port mode. The settings are Printer or Extended (Bi-direction). The system support four mode: SPP, EPP & SPP, ECP, ECP & EPP for selecting.

Serial Port 1

This option is used to select the port address and the IRQs of the on-board serial port A. The options are 3F8H, 2F8H, 3E8H, 2E8H, and Disable. The system support IRQ3, IRQ4, IRQ5, and IRQ9 for selecting.

Serial Port 2

This option is used to select the port address and the IRQs of the on-board serial port B. The options are 3F8H, 2F8H, 3E8H, 2E8H, and Disable. The system support IRQ3, IRQ4, IRQ5, and IRQ9 for selecting.

6.4 ADVANCED CHIPSET SETUP

This option controls the configuration of the board’ s chipset. Control keys for this screen are the same as for the previous screen.

Automatic Configuration

If selecting a certain setting for one BIOS Setup option determines the settings for one or more other BIOS Setup options, BIOS automatically assigns the dependent settings and does not permit the end user to modify these settings unless the setting for the parent option is changed. Invalid options are grayed and cannot be selected. There is two department: DRAM Setting and ISA Bus Clock & Timing Setting

AR Bus Clock Select

DRAM Read Wait State

DRAM Write Wait State

CACHE Read Wait State

CACHE Write Wait State

Cycle Check Point

These options set the DRAM and Cache RAM access speed. If AUTO Config Function option is enabled, the other options will return to the default settings.

I/O Recovery Feature

I/O Recovery Period

If I/O Recovery Feature option is enabled, the BIOS inserts a delay time between two I/O commands. The delay time is defined in I/O Recovery Period option.

Memory Remapping

If this option is enabled, the un-shadowed RAM area will be remapped to 1MB area above.

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Sony DX4, 486DX, AR-B1474 manual Advanced Chipset Setup

DX4, AR-B1474, 486DX specifications

The Sony 486DX, AR-B1474, and DX4 are notable examples of advanced computing technologies from the early to mid-1990s, a time when personal computers were rapidly evolving to meet increasing user demands. These systems played a pivotal role in shaping the landscape of modern computing.

The Sony 486DX is built around the popular Intel 80486 microprocessor, which was a significant step up from its predecessor, the 386. The 486DX featured a 32-bit architecture and introduced integrated cache memory, which greatly enhanced data processing speeds and overall system performance. Operating at clock speeds typically ranging from 25 to 100 MHz, the 486DX models provided a solid foundation for running more sophisticated software applications and advanced games of the era.

Accompanying the 486DX was the AR-B1474 motherboard, designed to maximize the potential of the 486 architecture. This motherboard featured support for up to 512 KB of level 2 cache memory, further boosting performance for data-heavy tasks. The AR-B1474 also included extensive connectivity options, with ISA slots for legacy devices, as well as support for EISA, making it compatible with a wide range of hardware peripherals. This versatility made the AR-B1474 a popular choice among builders of custom desktop PCs during its time.

The DX4, another significant milestone, built upon the 486 architecture by introducing a clock-doubling technique. By effectively allowing the processor to perform operations at up to three times its base clock speed (typically 75 or 100 MHz), the DX4 could handle even more demanding applications, thereby providing users with significant performance improvements without requiring a complete overhaul of their systems.

Both the 486DX and DX4 processors facilitated advancements in multimedia capabilities, with improved graphics rendering and audio performance that supported CD-ROMs and early gaming technologies. This made them particularly appealing to consumers looking for a versatile machine for both work and entertainment.

Overall, the combination of the Sony 486DX, AR-B1474 motherboard, and DX4 processor exemplifies a significant chapter in computing history, showcasing how hardware advancements seamlessly integrated with user needs for performance and flexibility. As these technologies laid the groundwork for future innovations, they remain noteworthy for their contributions to the evolution of personal computing.