[Coco] DriveWire

[Frank Pittel]

On Sat, Mar 07, 2009 at 02:25:22PM -0500, Robert Gault wrote:
> Frank Pittel wrote:
>
>> I'm the one that posted the wish list and it included being able to access
>> different types of devices under hdb-dos at once. Most of this comes from
>> my increased use of drivewire. As you know I also have the superide adaptor
>> and it always frustrates me to know that I can't use it when using drivewire.
>>
>> As you know I'm trying to get away from using floppies and I hate having to use
>> them to copy data from a drivewire image to the cf card on the ide interface.
>> You mention eprom space but there are four virtual eproms on the superide and
>> more on the superboard (when that's available). I would happily give them up
>> to accomodate some type of paging to allow access to drivewire and the cf in
>> my superide at the same time. That would of course limit it's use to those of
>> us that have the superide though.
>>
>> That's my fantasy but it's your product and the decision is yours.
>>
>> Frank
>>
>
> That could be done as I've done that with a custom DOS of my own and  
> ADOS3 does that. The idea is to bury code in the ROM at $E000-$FDFF.  
> When that code needs to be used, you switch from RAM to ROM, use the  
> code, and switch back to RAM.
> It takes very careful coding not to self-destruct and it requires a 16K  
> EPROM.

While I don't think I'm up to the coding challenge anymore my SuperIDE card
has four 16K "eproms" and they can be paged electronically.