Re: Apple floppy adaptor. I'm stuck!

[Tristan Mumford <xtristan.xmumford@xgmail.xcom>]

Bryan Parkoff wrote:

> Are you referring you want to hook up PC 3.5" drive to Disk II controller
> card?  It may not work.  You can try PC 5.25" drive and build an adapter.
> You need to write software routine to control PC 5.25" drive.  In other
> words for PC 3.5" drive, you may need Unidisk 3.5" controller card. 
> Either cards can read PC 5.25" / 3.5" drive using GCR encoding format.
> 
> Bryan Parkoff

Whether it's a 3.5" or 5.25" it shouldn't make a difference should it?
All differences in stepping and other control signals are handled by a hex
inverter and a uC.
Thankfully none of the extremely time-critical lines needed processing by
the uC. There is tons of time left in the stepping routine.

As for the possible, okay probable error in my stepping routine if I can't
nail it easily I'll either plop a max232 on the serial lines of the uC and
send the trackcount, or just dump the 4lsb of the trackcount to the 4 free
lines on the uC and give it a povvo binary trackcounter. Ie 4 leds.

Could you please tell me what advantages the unidisk controller has? I have
both a Unidisk controller and a non-exact clone disk ii card. I think you
saw the photo of it a month back.

Tristan.

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