diff --git a/cfg/cx16-asm.cfg b/cfg/cx16-asm.cfg
index 3c24bd56f..c3c08aec3 100644
--- a/cfg/cx16-asm.cfg
+++ b/cfg/cx16-asm.cfg
@@ -1,22 +1,27 @@
+# Assembly configuration for R38
+
 FEATURES {
     STARTADDRESS: default = $0801;
 }
 SYMBOLS {
     __LOADADDR__: type = import;
+# Putting "-u __EXEHDR__" on cl65's command line will add a BASIC RUN stub to your program.
+#    __EXEHDR__:   type = import;
     __HIMEM__:    type = weak, value = $9F00;
 }
 MEMORY {
     ZP:       file = "", start = $0022,  size = $0080 - $0022, define = yes;
+    ZP2:      file = "", start = $00A9,  size = $0100 - $00A9;
     LOADADDR: file = %O, start = %S - 2, size = $0002;
     MAIN:     file = %O, start = %S,     size = __HIMEM__ - %S;
 }
 SEGMENTS {
     ZEROPAGE: load = ZP,       type = zp;
-    EXTZP:    load = ZP,       type = zp, optional = yes;
+    EXTZP:    load = ZP2,      type = zp, optional = yes; # OK if BASIC functions not used
     LOADADDR: load = LOADADDR, type = ro;
     EXEHDR:   load = MAIN,     type = ro, optional = yes;
-    LOWCODE:  load = MAIN,     type = ro, optional = yes;
     CODE:     load = MAIN,     type = ro;
+    LOWCODE:  load = MAIN,     type = ro, optional = yes;
     RODATA:   load = MAIN,     type = ro;
     DATA:     load = MAIN,     type = rw;
     BSS:      load = MAIN,     type = bss,                define = yes;