diff --git a/compiler/examples/hello.p8 b/compiler/examples/hello.p8
new file mode 100644
index 000000000..0d775be30
--- /dev/null
+++ b/compiler/examples/hello.p8
@@ -0,0 +1,26 @@
+%import c64lib
+%import c64utils
+
+~ main {
+
+sub start() {
+
+    ; set screen colors and activate lowercase charset
+    c64.EXTCOL = 5
+    c64.BGCOL0 = 0
+    c64.COLOR = 1
+    c64.VMCSB = %10111
+
+    ; use kernel routine to write text (sorry, loops don't work in asm yet)
+    c64.CHROUT('H')
+    c64.CHROUT('e')
+    c64.CHROUT('l')
+    c64.CHROUT('l')
+    c64.CHROUT('o')
+    c64.CHROUT('!')
+    c64.CHROUT('\n')
+
+    return
+}
+
+}
diff --git a/compiler/examples/test.p8 b/compiler/examples/test.p8
index 448b3f5d0..832b13aa2 100644
--- a/compiler/examples/test.p8
+++ b/compiler/examples/test.p8
@@ -13,8 +13,10 @@ sub start() {
     uword address
     memory uword memaddr = $c000
     uword[2] wordarray
+    ubyte[2] ubytearray
     byte b1
     memory byte mb1 = $c991
+    memory ubyte mub1 = $c992
 
 
         str   stringvar   = "??????????\n\n\nnext line\r\r\rnext line after carriagereturn"
@@ -70,8 +72,31 @@ sub start() {
 ;    Y = c64.CHRIN()  ; ok!
 ;    v1 = c64.CHRIN()    ; ok !
 
+
+        c64.CHROUT(X)
+        c64.CHROUT(b1)          ; @todo fix compiler crash   expression identifierref should be a vardef, not null
+        c64.CHROUT(char1)       ; @todo fix compiler crash   "
+        c64.CHROUT(mb1)         ; @todo fix compiler crash   "
+        c64.CHROUT(mub1)            ; @todo fix compiler crash   "
+        c64.CHROUT(ubytearray[1])       ; @todo fix compiler crash  null cannot be cast to non-null type prog8.ast.VarDecl
+        c64.CHROUT(ubytearray[X])       ; @todo fix compiler crash    "
+        c64.CHROUT(wordarray[1])        ; @todo fix compiler crash     "
+
+    testsub(X)          ; @todo fix compiler crash
+    testsub(b1)        ; @todo fix compiler crash
+    testsub(char1)     ; @todo fix compiler crash
+    testsub(mb1)       ; @todo fix compiler crash
+    testsub(mub1)      ; @todo fix compiler crash
+    testsub(ubytearray[1])      ; @todo fix compiler crash
+    testsub(ubytearray[X])     ; @todo fix compiler crash
+    testsub(wordarray[1])      ; @todo fix compiler crash
+
     return
 }
 
 
+sub testsub(arg: ubyte) {
+    return
+}
+
 }
diff --git a/compiler/src/prog8/CompilerMain.kt b/compiler/src/prog8/CompilerMain.kt
index 06aeea7a1..1a2867815 100644
--- a/compiler/src/prog8/CompilerMain.kt
+++ b/compiler/src/prog8/CompilerMain.kt
@@ -36,6 +36,7 @@ fun main(args: Array<String>) {
 
     val startTime = System.currentTimeMillis()
     val filepath = Paths.get(moduleFile).normalize()
+    val programname: String
 
     try {
         // import main module and process additional imports
@@ -125,6 +126,7 @@ fun main(args: Array<String>) {
 
         val assembly = AsmGen(compilerOptions, intermediate, heap).compileToAssembly()
         assembly.assemble(compilerOptions)
+        programname = assembly.name
 
         val endTime = System.currentTimeMillis()
         println("\nTotal compilation+assemble time: ${(endTime-startTime)/1000.0} sec.")
@@ -137,10 +139,9 @@ fun main(args: Array<String>) {
 
     if(startEmu) {
         println("\nStarting C64 emulator...")
-        val program = "foo"
-        val monitorfile = "foo.mon_list"
+        val monitorfile = "$programname.mon_list"
         val cmdline = listOf("x64", "-moncommands", monitorfile,
-                "-autostartprgmode", "1", "-autostart-warp", "-autostart", program)
+                "-autostartprgmode", "1", "-autostart-warp", "-autostart", programname+".prg")
         ProcessBuilder(cmdline).inheritIO().start()
     }
 }