emul/pico-zxspectrum
emul/pico-zxspectrum
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MURMULATOR2

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Phil 2024-12-27 12:42:17 +00:00
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@ -23,7 +23,13 @@ This project is intended to be relatively easy to breadboard or prototype in som
## Updates
27/12/24
* Additions for Murmulator 2
* Vcore and Vsys displayed on menu
* PIO PWM mono audio for some builds
The move to PWM audio is primarily to support the RP2350, on which I have been having problems with the timer interrupts. There were also some stability issues on the RP2040 particularly with the 270Mhz overclock. Anyhow, I think the sound quality is much better using the PIO, probably because the delivery of samples is done in sync with the PWM frame. The down side is I am only doing mono for now; I have run out of PIO state-machines on the RP2040, but the RP2350 has an extra PIO block so I may have a go at stereo just for the RP2350.
23/11/24