C2N232 on the Oric-1

From: Marko Mäkelä (marko.makela_at_hut.fi)
Date: 2002-06-03 22:21:17

Last week, Mickael Pointier a.k.a. Dbug wrote me and quoted my Usenet 
posting from 1996 where I claimed that it is impossible to write decent 
video code for the Oric, as the video controller has no 
processor-readable registers.  He wanted me to see his demo
I still haven't seen it, since his demo needs to be adapted for the 
Oric-1 firmware (it invokes some Oric Atmos ROM routines).

Anyway, I got a reason to try the C2N232 harder on the Oric.  This time, 
I obtained some useful pointers from Mickael, including one to the 
tap2wav utility written by Fabrice Frances.  The needed modification to 
the C2N232 firmware, to support asymmetric pulses, was smaller than I 

I'll publish the updated firmware once I've completed the software.  For 
my first test, I used GNU Emacs to edit the tap2wav output and C-Kermit 
over xterm to copy the pulse data from Emacs to the C2N232.


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