make memtop adjust automatically when you use %address larger than the default memtop setting.

compiler/src/prog8/compiler/Compiler.kt

@@ -264,7 +264,14 @@ internal fun determineProgramLoadAddress(program: Program, options: CompilationO
     }
 
     options.loadAddress = loadAddress
+
     options.memtopAddress = program.toplevelModule.memtopAddress?.first ?: options.compTarget.machine.PROGRAM_MEMTOP_ADDRESS
+
+    if(loadAddress>options.memtopAddress) {
+        errors.warn("program load address ${loadAddress.toHex()} is beyond default memtop address ${options.memtopAddress.toHex()}. " +
+                "Memtop has been adjusted to ${'$'}ffff to avoid assembler error. Set a valid %memtop yourself to get rid of this warning.", program.toplevelModule.position)
+        options.memtopAddress = 0xffffu
+    }
 }
 
 

docs/source/todo.rst

@@ -3,8 +3,6 @@ TODO
 
 make repeat support 65536 iterations
 
-make memtop adjust automatically when you use %address larger than the default . Then simply set it at $ffff because apparently the programmer knows better?
-
 scripts/cx16_images : add an option to keep the first palette entry black (there's already the option to retain the first 16 entries)
 
 support this usage of defer:

examples/test.p8

@@ -1,16 +1,12 @@
 %import textio
-%zeropage basicsafe
 %option no_sysinit
+%zeropage basicsafe
+%address $f200
+%output raw
+%launcher none
 
 main {
     sub start() {
-        repeat 100 {
-            cx16.r0++
-            if cx16.r0!=0
-                goto mylabel
-        }
-
-mylabel:
-
+        txt.print_uwhex(cbm.MEMTOP(0, true), true)
     }
 }