Yahoo! News Story - Floppy Disk Becoming Relic of the Past (fwd)

From: Vintage Computer Festival <>
Date: Mon Sep 20 16:28:41 2004

On Mon, 20 Sep 2004, Teo Zenios wrote:

> The Windows 32-bit protected-mode cache driver (Vcache) determines the
> maximum cache size based on the amount of RAM that is present when Windows
> starts. Vcache then reserves enough memory addresses to permit it to access
> a cache of the maximum size so that it can increase the cache to that size
> if needed. These addresses are allocated in a range of virtual addresses
> from 0xC0000000 through 0xFFFFFFFF (3 to 4 gigabytes) known as the system
> arena.
> On computers with large amounts of RAM, the maximum cache size can be
> large enough that Vcache consumes all of the addresses in the system arena,
> leaving no virtual memory addresses available for other functions such as
> opening an MS-DOS prompt (creating a new virtual machine).

Bill Gates must've thought that, surely, no one will ever need more than
640MB of memory!

Sellam Ismail                                        Vintage Computer Festival
International Man of Intrigue and Danger      
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Received on Mon Sep 20 2004 - 16:28:41 BST

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