[sdiy] MIDI too fast?

[ASSI]

On Tuesday 15 June 2010, Ingo Debus wrote:
> So an interrupt service routine can be interrupted by an interrupt
> from the same source and of the same priority? Strange.

Hey, it's an 8085...  I don't remember the details, but the MIDI In 
happens through RST6.5 IIRC.  This would be individually maskable if 
someone suspected that another interrupt could occur, but it would 
likely require quite a bit of bit fiddling with RIM/SIM.  So I guess 
the Poly-800 just uses the global interrupt flag and releases that as 
early as possible...


Achim.
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