[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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