Posted By
IstvanV
on 2007-09-04
06:44:23
|  Re: plus4emu 1.2.1 release
More on the digiblaster/SID emulation: a quick look at one of the demos suggests that the DAC expects unsigned byte values (that is, for zero output level, it should be set to $80). Is this assumption correct ? A few more questions about the details: is the DAC register readable, or does it behave like other "write only" SID registers ? For the ADC register, should I always return $80 (assuming that it is unsigned) on read, and ignore writes ? What is the relative level of the digiblaster output compared to normal SID sound (and, for that matter, how about the SID vs. TED output level) ? These would be easy to figure out if I had the hardware, but unfortunately I do not have a SID card.
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