[Coco] Ken-Ton Update

[Gene Heskett]

On Friday 19 December 2003 20:00, Neil Morrison wrote:
>Does OS-9 have any support for 512 byte sectors or is it hard coded
>to 256 bytes?
>

Its pretty well hard coded for 256 byte sectors by being an 8 bit os.

There have been drivers that kept 2 sector buffers, read the whole 
scsi sector into that doubled buffer, and handed the data back to the 
requesting program in one buffer, or the other, depending on the 
least significant bit of the seeks high byte of the low int.  That 
worked reasonably well, but with todays drives being so big anyway, 
the tendency is to just use the first half of a 512 byte sector and 
waste the other half.

>Neil
>
>----- Original Message -----
From: "John E. Malmberg" <wb8tyw at qsl.net>
>
>...
>
>> Most of the drives used 512 byte sectors, some did not and used
>
>other
>
>> sizes.  If the sector size is wrong, then you will not be able to
>
>read
>
>> or write to the drive until it is reformatted.
>
>...

-- 
Cheers, Gene
AMD K6-III at 500mhz 320M
Athlon1600XP at 1400mhz  512M
99.22% setiathome rank, not too shabby for a WV hillbilly
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Copyright 2003 by Maurice Eugene Heskett, all rights reserved.