start address of blocks without explicit memory address, is now word-aligned in memory

compiler/src/prog8/compiler/target/c64/codegen/AsmGen.kt

@@ -181,6 +181,8 @@ internal class AsmGen(private val program: Program,
         out("\n\n; ---- block: '${block.name}' ----")
         if(block.address!=null)
             out("* = ${block.address!!.toHex()}")
+        else
+            out("\t.align 2")
         out("${block.name}\t" + (if("force_output" in block.options()) ".block\n" else ".proc\n"))
 
         outputSourceLine(block)

docs/source/todo.rst

@@ -2,8 +2,6 @@
 TODO
 ====
 
-- make blocks without explicit memory address, word-aligned in the assembly.
-
 - add sound to the cx16 tehtriz
 
 - hoist all variable declarations up to the subroutine scope *before* even the constant folding takes place (to avoid undefined symbol errors when referring to a variable from another nested scope in the subroutine)

examples/test.p8

@@ -5,6 +5,22 @@
 main {
 
     sub start() {
-        txt.print("Foo_bar\n")
+        uword xx = &b2.zz
+        xx=&b3.zz
+
+        txt.print_uwhex(&main, true)
+        txt.nl()
+        txt.print_uwhex(&b2, true)
+        txt.nl()
+        txt.print_uwhex(&b3, true)
+        txt.nl()
     }
 }
+
+b2 {
+    str zz="hello"
+}
+
+b3 $4001 {
+    str zz="bye"
+}