[Coco] Byte Order Question

[jdaggett at gate.net]

David

You would see

ABCD

and 

AB

Bit order is generally left to right starting with the Most Significant 
Bit on the Left ie:

b32,  b32, b30, ... ,b3, b2, b1,  b0

james


On 27 Jul 2004 at 21:35, David Gacke wrote:

From:           	"David Gacke" <dgacke at ektarion.com>
To:             	"'CoCoList for Color Computer Enthusiasts'" 
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Date sent:      	Tue, 27 Jul 2004 21:35:18 -0500
Subject:        	[Coco] Byte Order Question
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> Hi All,

> 

> I've got a byte order question and I'm sure someone on here can give

> me the correct answer.

> 

> I'm trying to figure out the byte order of 16 and 32 bit register

> writes from a 6809 and 6309 

> 

> I'll use text characters as an example.

> 

> For instance, if I have a 32 bit value of say 0x41424344  ('ABCD') and

> I were to write that to video display memory, what would I see?

> 

> Would it be:

> 

> ABCD

> 

> CDBA

> 

> DCBA

> 

> 

> Also, what about 16 bit writes of say 0x4142..

> 

> Is it 

> 

> AB or BA?

> 

> 

> I need someone to give me a sanity check while I'm coding something. 

> :)

> 

> Thanks a bunch!

> 

> 

> Dave

> 

> 

> 

> 

> 

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