Commodore datassette for the Oric-1

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I wanted to test the C2N232 device on the Oric-1.  The bad news are that 
the Oric-1 tape format is not supported by the current C2N232 firmware, 
which only knows about symmetric pulses.  Short pulses on the Oric-1 are 
symmetric (50% duty cycle), but the longer pulses have 66% or 33% duty 
cycle.  Also, I could not fully figure out the logical tape format in 
reasonable time.

The good news are that the Oric-1 was improved in the process.  Since 
the Oric tape connection has been designed for regular tape decks, I had 
to locate a spot where the TTL-level cassette read and write lines are 
located.  Now, this C2N interface for the Oric-1 has been documented at
<URL:http://www.funet.fi/pub/cbm/documents/projects/other/c2n-oric1.html>.

	Marko



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