Re: problem reading VGA text fonts

Bender, Bernhard (br@elsa.de)
Wed, 20 Nov 96 14:12:25 -0500

Hi,

Let me say it again: Every single access has the potential to corrupt
memory. There is not workarround. If you do few accesses, you'll seldomly
see the problem.

Bernhard Bender

---
Group Manager Core Technology   ELSA Computer Graphics

ELSA GmbH Email: br@elsa.de Sonnenweg 11 Fax : +49 (2405) 450 100 D-52 070 Aachen, Germany WWW : http://www.elsa.de

*** Original Message Follows *** On Wed, 20 Nov 1996, Bender, Bernhard wrote:

> >>> > now the interesting question is: how can we read the BIOS (esp. on AXP) > without currupting video memory ? > <<< > > Basically, you can't :-( > > The reading of the BIOS ROM itself causes corruption of memory contents, > no matter how you do it. You can read fast or slow, byte of Dwords, no > change.

maybe if using special alignment? eg. only reading the first 64 bits of a page. Or the last 64 bits.

-- mingo

*** End of Original Message ***

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