[Coco] Vcc and real floppy disks
mechacoco at gmail.com
Fri Sep 26 16:14:31 EDT 2008
Exactly. There is no need to do anything special to support real
"flippies" in an emulator. As far as the emulator is concerned those
are just single-sided disks, and you still have to flip them manually.
On 9/26/08, Tim Fadden wrote:
> Not to be confused with a flippy! As the rotation is different! With
> the rsdos controller I have, under rsdos 1 drive is drive0 on top, and
> drive2 on the bottom the second drive is drive1 on top, and drive 3 on
> the bottom. Under OS9, the the drives work as normal double sided disks.
> Darren A wrote:
>> I think the problem that Robert was referring to is when a modified
>> DECB is used to access the second side of a disk as though it were a
>> separate disk. In this case the ID fields on both sides are encoded as
>> side zero.
>> For this scenario you need to use different values for the "phead" and
>> "head" fields of the FD_READ_WRITE_PARAMS structure when accessing the
>> second side of the disk (the "phead" field should be 1 and "head"
>> should be 0). With a true double sided disk under OS9 these two fields
>> should always be the same.
>> On 9/26/08, Joe F <joef6809 at gmail.com> wrote:
>>> Darren just saw your post,
>>> your right fdrawcmd lets you pick the side of the disk, right now I'm
>>> forwarding the side select from the WD1773 chip so if you have an os like
>>> OS9 or a DECB that been modified to use the second side that should
>>> definitely work. I just never thought of over-riding that so standard
>>> would work like that.
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