AR-B1474 User¡¦s Guide

5.4.5 Combination of ROM and RAM Disk

The AR-B1474 can be configured as a combination of one ROM disk and one RAM disk. Each disk occupies a drive unit.

Step 1: Use jumper block to select the proper ROM/RAM configuration you are going to use.

Step 2: Insert the first programmed EPROM into the socket mem1, the second into the socket MEM2, etc.

Step 3: Insert the SRAM chips starting from the first socket assigned as SRAM.

Step 4: Select the proper I/O base port, firmware address and disk drive number on SW1.

Step 5: Turn on power and boot DOS from hard disk drive or floppy disk drive.

Step 6: Use the DOS command [FORMAT] to format the RAM disk.

C:\>FORMAT [RAM disk letter] /U

Step 7: If 5V FLASH (small page) is being used for the first time.

And then use the DOS command [FORMAT] to format the FLASH disk.

Step 8: If large page 5V FLASH is being installed for the first time, please use the FLASH programming utility PGM1474.EXE to program ROM pattern files, which have been generated by RFG.EXE onto the FLASH chips.

NOTE: Users can only boot DOS from the ROM disk drive if the AR-B1474 is configured as a ROM and a RAM disk. You don’ t need to copy DOS onto the RAM disk.

5.5 INSTALLATION D.O.C.

5.5.1 Hardware Setting

(1) SSD BIOS Setting (JP7)

JP7 -- SSD BIOS

1

2

3

1

2

3

 

 

 

 

 

 

 

Disable Enable

Figure 5-12 JP7: SSD BIOS Setting

(2) D.O.C. Socket Select (M1)

DiskOnChip only use MEM1 socket, so user must set the M1 for adjusting the DiskOnChip’ s type.

A B C

1

2

3

M1

Figure 5-13 M1: D.O.C. Socket Select

5-12

Page 49 Page 51
Page 50
Image 50
Sony AR-B1474, DX4, 486DX manual Combination of ROM and RAM Disk, Installation D.O.C, Hardware Setting, SSD Bios Setting JP7
Page 49 Page 51

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.
Top Page Image Contents