[Coco] Re: [Color Computer] DSK images to coco
mark at cloud9tech.com
Mon May 2 06:24:06 EDT 2005
At 02:21 AM 5/2/2005, you wrote:
Actually as I understand it. VERIFYON is for writting but performs a READ
of the written sector in to the buffer which is right before or after the
write buffer and then a compare of the buffer is performed. A VF? error is
returned if what was written was not read.
>Actually, verify is only used under RSDOS for writing, not reading, if the
>VERIFY ON command has been issued.
>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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> > Coco at maltedmedia.com
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