add joydemo to c65/mega65 samples, it works when driver is statically linked

samples/Makefile

@@ -108,6 +108,8 @@ DISK_apple2enh = samples.dsk
 DISK_atari     = samples.atr
 DISK_atarixl   = samples.atr
 DISK_plus4     = samples.d64
+DISK_c65       = samples.d81
+DISK_mega65    = samples.d81
 
 # --------------------------------------------------------------------------
 # System-dependent settings
@@ -253,6 +255,7 @@ EXELIST_c65 = \
         checkversion \
         enumdevdir \
         hello \
+        joydemo    \
         sieve \
         tinyshell
 
@@ -336,6 +339,7 @@ EXELIST_mega65 = \
         checkversion \
         enumdevdir \
         hello \
+        joydemo    \
         sieve \
         tinyshell
 
@@ -560,6 +564,12 @@ samples.d64: samples
 	$(foreach file,$(OVERLAYLIST),$(D64_WRITE_PRG_recipe))
 	$(foreach file,$(EMD) $(MOU) $(JOY) $(TGI),$(D64_WRITE_SEQ_recipe))
 
+samples.d81: samples
+	@$(C1541) -format "samples,00" d81 $@ >$(NULLDEV)
+	$(foreach file,$(EXELIST_$(SYS)),$(D64_WRITE_PRG_recipe))
+	$(foreach file,$(OVERLAYLIST),$(D64_WRITE_PRG_recipe))
+	$(foreach file,$(EMD) $(MOU) $(JOY) $(TGI),$(D64_WRITE_SEQ_recipe))
+
 # --------------------------------------------------------------------------
 # Rule to make an Apple II disk with all samples. Needs the AppleCommander
 # program, available at https://applecommander.github.io/, and a template disk

samples/joydemo.c

@@ -3,6 +3,9 @@
 #include <stdio.h>
 #include <joystick.h>
 
+/* define 0 to link the standard driver statically */
+/* #define DYN_DRV         0 */
+
 #ifndef DYN_DRV
 #  define DYN_DRV       1
 #endif
@@ -31,7 +34,7 @@ int main (void)
     PRINTF("Driver init..." CR);
 
 #if DYN_DRV
-    /* Load and initialize the driver */
+    /* Load and initialize the standard driver driver */
     if ((err = joy_load_driver (joy_stddrv))) {
         PRINTF ("Driver load error (code %d)." CR
                 "Warning: This program needs the JOY" CR
@@ -40,7 +43,7 @@ int main (void)
     }
     PRINTF("Driver loaded OK" CR);
 #else
-    /* Install the driver */
+    /* Install the standard driver */
     joy_install (joy_static_stddrv);
 #endif