Re: Floppy disk emulator for Lisa

This is great! Look forward to keeping up on the project.

On Sat, Feb 28, 2015 at 12:00 PM, Steve Chamberlin < steve.chamberlin_at_email.domain.hidden> wrote:

> Hi everyone,
>
> I've been working on a floppy disk emulator for the Lisa, and thought the
> folks here would be interested. I previously developed some hardware called
> Floppy Emu for the vintage Macintosh, which emulates 400K, 800K, and 1440K
> floppies as well as the Apple HD20 hard disk. Recently I started thinking
> about what might be necessary to add Lisa support, since the 400K and 800K
> floppy mechanisms are actually the same between the Lisa and the Mac. In
> theory it should be possible to add Lisa support purely through firmware
> changes, using the existing hardware.
>
> With the help of some very kind Lisa experts and a borrowed Lisa 2/10,
> I've been running some tests and doing some experiments, using BLU as well
> as a custom floppy test program. You can read about the progress so far
> here:
>
> http://www.bigmessowires.com/2015/02/21/apple-lisa-floppy-emulation/
> http://www.bigmessowires.com/2015/02/23/lassoing-the-lisa/
> http://www.bigmessowires.com/2015/02/24/lisa-emu-day-3/
>
> Currently with the Lisa test firmware, the Floppy Emu works on a Lisa
> 2/10, for reading and writing emulated 400K and 800K Macintosh floppy disks
> under Macworks. But it's too slow to be very useable, and I think there are
> repeated low-level errors happening that are slowing down floppy I/O. The
> current Lisa test firmware doesn't seem to work at all on the Lisa 2/5.
>
> Once emulation of Macintosh floppies is working smoothly under Macworks (I
> hope), I plan to add additional firmware support for native Lisa format
> floppies, so the hardware could be used to boot the Lisa and run under the
> Lisa Office System.
>
>
>
>
> --
> --
> -----
> You received this message because you are a member of the LisaList group.
> The group FAQ is at http://lowendmac.com/lists/lisa.html
> To post to this group, send email to lisalist_at_email.domain.hidden
> To leave this group, send email to lisalist+unsubscribe_at_email.domain.hidden
> For more options, visit this group at
> http://groups.google.com/group/lisalist
> ---
> You received this message because you are subscribed to the Google Groups
> "LisaList" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to lisalist+unsubscribe_at_googlegroups.com.
> For more options, visit https://groups.google.com/d/optout.
>

-- 
-- 
-----
You received this message because you are a member of the LisaList group.
The group FAQ is at http://lowendmac.com/lists/lisa.html
To post to this group, send email to lisalist_at_email.domain.hidden
To leave this group, send email to lisalist+unsubscribe_at_email.domain.hidden
For more options, visit this group at http://groups.google.com/group/lisalist
--- 
You received this message because you are subscribed to the Google Groups "LisaList" group.
To unsubscribe from this group and stop receiving emails from it, send an email to lisalist+unsubscribe_at_googlegroups.com.
For more options, visit https://groups.google.com/d/optout.



text/html attachment: alternate version of message