Xebec Posted August 3, 2017 Share Posted August 3, 2017 What are some good examples of POKEY combining two channels for 16-bit sound? Also, I'd like to know a little bit about the "15 kHz" frequency divider mode vs 64 kHz. When would you use one but not the other? Thanks Quote Link to comment Share on other sites More sharing options...
Rybags Posted August 3, 2017 Share Posted August 3, 2017 The 15 KHz mode gives about 1/4 the frequency for a given AUDF value - 64 KHz uses a cycle counter of 28 ticks between timer decrements, 15 KHz uses 114 cycles (which handily is exactly one scanline allowing use of Pokey Timers to do raster exact IRQs). The 15 KHz mode gives more range when using the voices in normal 8-bit mode but the spacing between higher notes becomes somewhat high. Both modes can also be used as basis for the 16-bit mode though generally they aren't because the 1.79 MHz clock using that mode provides adequate low notes as it is. The disadvantage of 15 KHz mode is that it replaces the 64 KHz mode on all voices, though of course if you use 16-bit mode on a pair of voices then you'll usually feed them the 1.79 Mhz clock. Quote Link to comment Share on other sites More sharing options...
+Nezgar Posted August 3, 2017 Share Posted August 3, 2017 My favourite/most memorable use of 16-bit frequencies was the high-pitched engine rev-up whine right before launch in Rescue on Fractalus, and I believe throughout all engine sounds while flying around on the planet. Quote Link to comment Share on other sites More sharing options...
emkay Posted August 3, 2017 Share Posted August 3, 2017 Some 16 Bit sound... http://atariage.com/forums/topic/199103-teaser-sid-2-gumby/ Quote Link to comment Share on other sites More sharing options...
ivop Posted August 3, 2017 Share Posted August 3, 2017 This thread has some tunes that solely use 16-bit Pokey channels, in stereo. Note to self: convert sid2gumby to mads Quote Link to comment Share on other sites More sharing options...
emkay Posted August 3, 2017 Share Posted August 3, 2017 lol Quote Link to comment Share on other sites More sharing options...
ivop Posted August 3, 2017 Share Posted August 3, 2017 (edited) I don't believe in telepathy!! Anyway, listen to Retrograd for the low notes, the Cybernoid solo for very high notes and e.g. Myth Mix for slides. Edited August 3, 2017 by ivop Quote Link to comment Share on other sites More sharing options...
emkay Posted August 3, 2017 Share Posted August 3, 2017 Sadly, NO Tracker supports 16 Bit as it's used to do. But, RMT patches allow some "side views".... using mixed POKEY settings to use the "in the tracker available 16 bit programming" .... resulting in unexpected stuff... with up to 3 channels at 16 Bit precision.... or using 3 different clockings for music with 3 channels... or temporary "spreading the frequency range.... Quote Link to comment Share on other sites More sharing options...
Synthpopalooza Posted August 4, 2017 Share Posted August 4, 2017 There is also this ... Admittedly it is for the 7800 but it uses 16 bit POKEY for the bass. I did the music ... 1 Quote Link to comment Share on other sites More sharing options...
Synthpopalooza Posted August 4, 2017 Share Posted August 4, 2017 This thread has music for Mappy that I did in 16 bit mode. http://atariage.com/forums/topic/222932-mappy-on-our-8-bit/ Quote Link to comment Share on other sites More sharing options...
Jinks Posted August 4, 2017 Share Posted August 4, 2017 This thread has music for Mappy that I did in 16 bit mode. http://atariage.com/forums/topic/222932-mappy-on-our-8-bit/ Can you get Bob to make that for the 7800? Quote Link to comment Share on other sites More sharing options...
Synthpopalooza Posted August 4, 2017 Share Posted August 4, 2017 Believe me I have tried. Maybe someday. Quote Link to comment Share on other sites More sharing options...
Synthpopalooza Posted August 4, 2017 Share Posted August 4, 2017 There's also these sounds I did for Mario Bros. http://atariage.com/forums/topic/258373-mario-bros-xe-hack/page-2 Quote Link to comment Share on other sites More sharing options...
Xebec Posted August 4, 2017 Author Share Posted August 4, 2017 These are all great sounds and musics - thanks folks! It seems like people are still getting better and better sound out of the POKEY over time.. I love the A8 computer, I just wish it had had a fair shake as a console too back in the 80s. Quote Link to comment Share on other sites More sharing options...
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