Epson Apex Ürün Destek Bülteni - Sayfa 12

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What about the 155Mb RAM listed as the maximum for the Equity

Q3.

III +?

This larger amount of RAM is the maximum usable memory range

for an 80286 microprocessor and generally refers to extended

memory. Extended memory starts at the 1Mb boundary and extends

out to 16Mb. As it requires a 24 - bit address to access memory in

this range, extended memory is handled by the protected mode of

the 80286. Examples of currently available software that can switch

into protected mode to use extended memory are Framework II,

AutoCAD, the VDisk RAM disk and Xenix OS.

Q4.

How does LIM EMS 4.0, the latest version, differ from the earlier

version, LIM EMS 3.2?

EMS 4.0 supports up to 32Mb of expanded memory where EMS 3.2

supported only 8Mb. EMS 4.0 has been changed to make it easier

for applications to share expanded memory. In EMS 4.0, page

mapping has been streamlined and new functions allow application

programs to dynamically increase and decrease the amount of

expanded memory allocated to them. In previous versions of EMS,

the page frame was located in an unused 64K block of memory

between 640K and 1Mb. EMS 4.0, subject to limitations in the

system hardware, supports the page frame anywhere in the first 1Mb

of memory. Before EMS 4.0, the page frame held four pages. Now

you can define a page frame of up to eight pages in memory above

640K. The size of the page frame is limited only by the amount of

available memory.

smaller than standard (16K) memory pages used by some expanded

memory boards.

Q5.

Is EMS 4.0 compatible with my old expanded memory board?

The EMM 4.0 driver works with existing hardware. You don't need

to buy a new expanded memory board. However, until you use

applications that have been written to take advantage of EMS 4.0,

you probably won't notice much improvement in performance over

your older version.

There has also been a change to support the

PSB No: S-0047C

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