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StylusI have pico-mac playing the system beep on an i2s dac (though when <a href="https://mastodon.cloud/@adafruit" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@adafruit</a> <a href="https://fosstodon.org/@ladyada" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@ladyada</a> made a build locally, it didn't work for her, hmmmm, I'll get that sorted tomorrow)in the process, I discovered an interesting problem that might be randomly corrputing a certain 740 bytes of RAM when pico-mac or umac is configured for a non-power-of-two memory size! <a href="https://github.com/evansm7/umac/issues/15" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://github.com/evansm7/umac/issues/15</a>the fix seems to be another rom patch:<pre><code> /* Fix up the sound buffer as used by BootBeep */ ROM_WR32(0x292, RAM_SIZE - 768); </code></pre>and is also included in <a href="https://github.com/evansm7/umac/pull/14" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://github.com/evansm7/umac/pull/14</a>you also avoid the problem if you configure pico-mac for 256kB, 512kB, 1024kB, etc.<a href="https://social.afront.org/tags/marchintosh" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#marchintosh</a> <a href="https://social.afront.org/tags/picoMac" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#picoMac</a> <a href="https://social.afront.org/tags/umac" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#umac</a> <a href="https://social.afront.org/tags/rp2" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#rp2</a> <a href="https://social.afront.org/tags/rp2350" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#rp2350</a>

Brandon 👏👏 Brandoff 👏👏Anyone here use the <a href="https://easymode.im/tags/Retroid" rel="nofollow noopener noreferrer" target="_blank">#Retroid</a> Pocket 2+? I'm trying to find a good CRT shader for <a href="https://easymode.im/tags/RetroArch" rel="nofollow noopener noreferrer" target="_blank">#RetroArch</a> to preserve transparency effects (like the waterfalls in Sonic 2) and dithering. The problem is, a lot of shaders that are lightweight enough (easymode, lottes-fast, etc.) don't seem to do the trick, the ones that work well (sonkun, royale) are too heavy for the hardware, and some that might be solid contenders are made for 1080p+ resolutions and create giant, goofy scanlines at 480p. The <a href="https://easymode.im/tags/handhelds" rel="nofollow noopener noreferrer" target="_blank">#handhelds</a> are so easy with the lcd-v2-color shaders, but finding a good CRT shader for home console <a href="https://easymode.im/tags/emulation" rel="nofollow noopener noreferrer" target="_blank">#emulation</a> has been tough with this device. <a href="https://easymode.im/tags/RP2+" rel="nofollow noopener noreferrer" target="_blank">#RP2+</a> <a href="https://easymode.im/tags/RetroidPocket2+" rel="nofollow noopener noreferrer" target="_blank">#RetroidPocket2+</a> <a href="https://easymode.im/tags/RetroidPocket2Plus" rel="nofollow noopener noreferrer" target="_blank">#RetroidPocket2Plus</a> <a href="https://easymode.im/tags/RetroidPocket" rel="nofollow noopener noreferrer" target="_blank">#RetroidPocket</a>

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