Epson NX-Epson Product Support Bulletin - Page 9

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Does Epson update these drivers? How does the user obtain an

Q4.

updated version?

Yes. Epson is constantly working with application vendors and the VGA

manufacturer to provide customers with the most current device drivers

available. Resellers have access to these device drivers through the

Epson Product Support BBS (310-782-4531). This electronic bulletin

board provides new information about Epson products 24 hours a day, 7

days a week.

Do the VGA drivers take advantage of the Wingine video graphics

Q5.

acceleration architecture?

No. When using MS-DOS applications, the Epson Progression 4 operates

in standard VGA mode. The true advantage of the Wingine architecture is

realized within the Windows 3.0 and 3.1 environments. Drivers are

provided for both versions of Windows. In the future, Epson will make

Wingine drivers available for MS-DOS applications such as AutoCAD and

for operating systems like OS/2.

Q6.

Does the Epson Progression 4 include hardware cursor support and

what are its benefits?

Yes. The SETUP program in Windows 3.1 lists several drivers marked

*Wingine Hardware Cursor. These options add hardware-based cursor

control which frees the CPU from handling mouse movements and

redraws. This speeds up overall system performance. In addition, the

cursor will not blink when it's moved over areas on the screen that are not

being changed.

What is VirtualCache and why is it beneficial?

Q7.

Epson's VirtualCache memory architecture produces cache-like

performance without the cache subsystem. Here's a summary of how it

works: the Progression 4 uses its standard, dynamic RAM to communicate

directly with the CPU. Using VirtualCache architecture, the system works

at the burst speed of the 486 processor (the fastest speed possible),

delivering the fastest performance possible without the need for a

secondary cache buffer. This makes the "Virtual" buffer as large as the

total system memory which is a minimum of 4MB.

In addition, the VirtualCache feature acts with the Wingine accelerator to

boost video performance by allowing large quantities of data to move from

memory to the screen at processor speed rather than at system I/O

speed.

PSB No: S-0160

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