[Coco] Re: [Color Computer] DSK images to coco

jdaggett at gate.net jdaggett at gate.net
Mon May 2 14:17:21 EDT 2005


Arthur 

Yes but after a write the computer reads what was written and 
compares two buffers. The verify command must do a read of what 
it had written. That read goes to the verify buffer. Then the two 
buffers are compared. 

james

On 2 May 2005 at 3:21, Arthur Flexser wrote:

Date sent:      	Mon, 2 May 2005 03:21:37 -0400 (EDT)
From:           	Arthur Flexser <flexser at fiu.edu>
To:             	CoCoList for Color Computer Enthusiasts 
<coco at maltedmedia.com>
Subject:        	Re: [Coco] Re: [Color Computer] DSK 
images to coco
Send reply to:  	CoCoList for Color Computer Enthusiasts 
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> Actually, verify is only used under RSDOS for writing, not reading, if
> the VERIFY ON command has been issued.  
> 
> Art
> 
> 
> On Sun, 1 May 2005 jdaggett at gate.net wrote:
> 
> > Correct in that you can poke the RSBASIC to read a 512 byte sector
> > but in doing that you can not verify what you read. 
> > 
> > It would have been so nice to have had basic allocate two 256 byte
> > buffers for read/write and another two 256 byte buffers for verify. 
> > 
> > james
> > 
> > 
> > On 1 May 2005 at 12:29, John E. Malmberg wrote:
> > 
> > To:             	coco at maltedmedia.com
> > From:           	"John E. Malmberg" <wb8tyw at qsl.net>
> > Date sent:      	Sun, 01 May 2005 12:29:06 -0400
> > Subject:        	[Coco] Re: [Color Computer] DSK images to 
> > coco
> > Send reply to:  	CoCoList for Color Computer Enthusiasts 
> > <coco at maltedmedia.com>
> > 	<mailto:coco-
> > request at maltedmedia.com?subject=unsubscribe>
> > 	<mailto:coco-
> > request at maltedmedia.com?subject=subscribe>
> > 
> > > On the other hand, I have discovered that the COCO under ROM BASIC
> > > and read and write the first 256 bytes of the 512 byte sectored
> > > media. Actually it can read and write the full 512 bytes if you
> > > use peeks and pokes.  The upper 256 bytes are in the read/write
> > > verify buffer.
> > 
> > 
> > 
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