Update changelog; new versions

polpo · Mar 19, 2024 · 57c85a8 · 57c85a8
1 parent fbd4076
commit 57c85a8
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Showing 3 changed files with 13 additions and 2 deletions.
diff --git a/pgusinit/pgusinit.c b/pgusinit/pgusinit.c
@@ -31,7 +31,7 @@ typedef enum {
 } card_mode_t;
 
 void banner(void) {
-    printf("PicoGUSinit v2.0.0 (c) 2023 Ian Scott - licensed under the GNU GPL v2\n\n");
+    printf("PicoGUSinit v2.0.1 (c) 2024 Ian Scott - licensed under the GNU GPL v2\n\n");
 }
 
 const char* usage_by_card[] = {

diff --git a/sw/CHANGELOG.md b/sw/CHANGELOG.md
@@ -1,3 +1,14 @@
+# v1.1.0
+
+## New features/fixes
+
+### GUS emulation:
+* Works around a hardware bug in the PCM510xA DAC that results in ~10% of chips to be silent at 22.05kHz sampling rate. This is the rate produced by the GUS at 28 channels, and is used by Doom and the demo "Dope". The workaround is to run the DAC at 44.1kHz, linearly interpolating the 22.05kHz output.
+* New EXPERIMENTAL fixed 44.1kHz output. Normally the GF1 varies its output sample rate from 44.1kHz at 14 voices to 19.2kHz at 32 voices. Using this option enables 44.1kHz output for all numbers of voices, similar to the Interwave. This gives much higher quality output when playing lots of channels.  This will result in stuttering in most games that use streaming DMA for sound effects like Doom, hence it is EXPERIMENTAL. It can be enabled with the `/4` switch in pgusinit.
+
+### pgusinit
+* New `/4` switch when in GUS mode to enable fixed 44.1kHz output.
+
 # v1.0.2
 
 ## New features/fixes

diff --git a/sw/CMakeLists.txt b/sw/CMakeLists.txt
@@ -16,7 +16,7 @@ include(pico_sdk_import.cmake)
 include(pico_extras_import.cmake)
 
 project(picogus
-    VERSION "1.0.2"
+    VERSION "1.1.0"
     LANGUAGES C CXX ASM
 )