Pinout for SED9421

[Allison]

Chuck Guzis wrote:
> On 11/28/2005 at 10:46 AM Dwight K. Elvey wrote:
> 
> 
>>Besides the HeathKit hard sectored controller board,
>>used on both the H8 and the H89, Polymorphics also
>>used a serial chip to do data. In both of these
>>cases, as you state, they used synchronous serial
>>chips and not async.
> 
> 
> To put a reverse twist on this, has anyone ever used two floppy controllers
> to transfer data between two systems?  I know it'd take a little extra
> hardware (something has to provide address headers outside of a format
> operation), but it should still be quite possible to do so.
> 

Yes, I have. only because the system didnt' have a serial port, only a
centronics printer port (non PC style).

Depends on the floppy controller on the headers.

the 765 makes a good tape controller.

Allison