[Coco] speech/orch pak

[mmarlett at isd.net]

Capacitance and noise limits. The address bus of the CoCo is unbuffered,
IE: very little drive capability.

No you can't add more than one multipak, as stock that is. You could
rewrite the equations in the PLD for the 26-3024 or modify the logic of the
26-3124 to another free location for the MPI slot select register. Then you
could.

We have a device that we haven't released that allows you to place 16-32k
ROM packs in one slot. All FLASH based, software selectable and
reprogrammable at anytime. Poke and play your favorite ROMpak, poke and
play another, all without removing a single cartridge.

Regards,

Mark
Cloud-9





>Ok, That all makes sense. So I wonder what the limit of concurrent devices
>you could have attached via Y-cable (or something with a lot more
>connections). Do you thing you could connect 2 multipaks at the same time
to
>allow 8 device to be simultaneously connected? Eg a FD-501, ssc, orch-90,
>real time clock, superIDE and 3 rompaks.
>
>SB
>
>'I stepped in What??'
>
>> 
>> Hi,
>> 
>> 	I think the hardware in both these do their own address 
>> decoding and do not rely on the cartridge I/O select signal.
>> 
>> 					kevin
>> 
>> Stephen Blunt wrote:
>> > 
>> > But if you plug it into the mpi, I thought it would only be active 
>> > when the selector switch was selecting it (unless you put 
>> it in slot 
>> > 4? [which I imagine runs concurrently with the other 3 
>> slots?]). That 
>> > is why I could never quite figure out how it was used.
>> > 
>> > SB
>> > 
>> > 'I stepped in What??'
>> > 
>> > > > Ah, I think I understand. The Y-cable lets the speech pak
>> > > and multipak
>> > > > run concurrently.
>> > > >
>> > > ...and without using up an MPI slot. I could have just plugged it 
>> > > into the MPI.
>> > >
>> > > Bob
>
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