Initial Commit

z_gbdk_playground_original/beep/Makefile

@@ -0,0 +1,17 @@
+AS = lcc -c
+CC = lcc -Wa-l -Wl-m
+
+BIN = beep.gb
+OBJS = beep.o
+
+all: $(BIN)
+
+%.s: %.ms
+	maccer -o $@ $<
+
+$(BIN): $(OBJS)
+	$(CC) -o $(BIN) $(OBJS)
+
+clean:
+	rm -rf $(BIN) $(OBJS) *~
+

z_gbdk_playground_original/beep/README.md

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+# Beep
+
+![](screenshot.png)
+
+Demonstrates how to play a simple SFX sound.
+

z_gbdk_playground_original/beep/beep.c

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+#include <gb/gb.h>
+#include <gb/drawing.h>
+
+void main() {
+    NR50_REG = 0xFF;
+    NR51_REG = 0xFF;
+    NR52_REG = 0x80;
+    
+    gotogxy(1, 1);
+    gprintf("====== Beep ======");
+    
+    gotogxy(2, 3);
+    gprintf("Press any button");
+    
+    while(1) {
+        UBYTE joypad_state = joypad();
+        
+        if(joypad_state) {        
+            NR10_REG = 0x38U;
+            NR11_REG = 0x70U;
+            NR12_REG = 0xE0U;
+            NR13_REG = 0x0AU;
+            NR14_REG = 0xC6U;
+
+            NR51_REG |= 0x11;
+            
+            delay(200);
+        }
+    }
+}
+