Software Programming, UV Eprom 27CXXX Switch Setting

AR-B1474 User¡¦s Guide

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Figure 5-5 UV EPROM (27CXXX) Switch Setting

A	B	C
1			JP5
1
2
3		1	2	3
3		1MX8 EPROM (Only)
		1MX8 EPROM (Only)
M1, M2 & M3
A	B	C

JP5

1 2 3

M1, M2 & M3

EPROM (128KX8, 256KX8 and 512KX8)

Figure 5-6 UV EPROM Jumper Setting

(2) Software Programming

Use the UV EPROM, please refer to the follow steps:

Step 1: Turn on the power and boot DOS from hard disk drive or floppy disk drive.

Step 2: Making a Program Group File (*.PGF file)

Step 3: Using the RFG.EXE to generate ROM pattern files, and counting the ROM numbers as the pattern files.

Step 4: In the DOS prompt type the command as follows.

C:\>RFG [file name of PGF]

Step 5: In the RFG.EXE main menu, choose the <Load PGF File> item, that is user editing *.PGF file.

Step 6: Choose the <Generate ROM File(s)>, the tools program will generate the ROM files, for programming the EPROMs.

Step 7: Program the EPROMs

Using the instruments of the EPROM writer to load and write the ROM pattern files into the EPROM chips. Make sure that the EPROMs are verified by the program without any error.

Step 8: Install EPROM chips

Be sure to place the programmed EPROMs (R01, R02 … .) into socket starting from MEM1 and ensure that the chips are installed in the sockets in the proper orientation.

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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.

Sony DX4, 486DX, AR-B1474 manual Software Programming, UV Eprom 27CXXX Switch Setting

Models: DX4 AR-B1474 486DX