fix assembly error for uword[3] @zp @split word_addrs

codeGenCpu6502/src/prog8/codegen/cpu6502/ProgramAndVarsGen.kt

@@ -497,7 +497,15 @@ internal class ProgramAndVarsGen(
         for ((scopedName, zpvar) in zpVariables) {
             if (scopedName.startsWith("cx16.r"))
                 continue        // The 16 virtual registers of the cx16 are not actual variables in zp, they're memory mapped
-            asmgen.out("${scopedName.substringAfterLast('.')} \t= ${zpvar.address} \t; zp ${zpvar.dt}")
+            val variable = symboltable.flat.getValue(scopedName) as StStaticVariable
+            if(variable.dt in SplitWordArrayTypes) {
+                val lsbAddr = zpvar.address
+                val msbAddr = zpvar.address + (zpvar.size/2).toUInt()
+                asmgen.out("${scopedName.substringAfterLast('.')}_lsb \t= $lsbAddr \t; zp ${zpvar.dt} (lsbs)")
+                asmgen.out("${scopedName.substringAfterLast('.')}_msb \t= $msbAddr \t; zp ${zpvar.dt} (msbs)")
+            } else {
+                asmgen.out("${scopedName.substringAfterLast('.')} \t= ${zpvar.address} \t; zp ${zpvar.dt}")
+            }
         }
     }
 

compiler/test/codegeneration/TestArrayThings.kt

@@ -8,6 +8,7 @@ import prog8.code.target.C64Target
 import prog8.code.target.VMTarget
 import prog8tests.helpers.ErrorReporterForTests
 import prog8tests.helpers.compileText
+import kotlin.io.path.readText
 
 class TestArrayThings: FunSpec({
     test("assign prefix var to array should compile fine and is not split into inplace array modification") {
@@ -160,5 +161,19 @@ main {
         compileText(VMTarget(), false, text, writeAssembly = true) shouldNotBe null
         compileText(C64Target(), false, text, writeAssembly = true) shouldNotBe null
     }
+
+    test("split array in zeropage is okay") {
+        val text = """
+main {
+    sub start() {
+        uword[3] @zp @split @shared thearray
+    } 
+}"""
+        val result = compileText(C64Target(), false, text, writeAssembly = true)!!
+        val assemblyFile = result.compilationOptions.outputDir.resolve(result.compilerAst.name + ".asm")
+        val assembly = assemblyFile.readText()
+        assembly shouldContain "thearray_lsb"
+        assembly shouldContain "thearray_msb"
+    }
 })
 

docs/source/todo.rst

@@ -1,7 +1,6 @@
 TODO
 ====
 
-- fix assembly error for uword[3] @zp @split word_addrs  (not defined symbol 'p8_word_addrs_lsb')
 - fix fill() to not access pixels outside of the screen (use virtual testmongfx first?)
 - change fill() to use unsigned types for optimization, and re-check previous problem.