Adapted, to the c64 target, the INIT-segment overlay scheme from the apple2 targets.

[cc65] / cfg / c64.cfg

diff --git a/cfg/c64.cfg b/cfg/c64.cfg
index 5d8befd020e5052432b0f14a357e74a528b76d5e..861e19faf78cd846fbf82454ebd5faf5ce8133b4 100644 (file)
--- a/cfg/c64.cfg
+++ b/cfg/c64.cfg
@@ -1,26 +1,31 @@
+FEATURES {
+    STARTADDRESS:  default = $0801;
+}
 SYMBOLS {
     __LOADADDR__:  type = import;
     __EXEHDR__:    type = import;
     __STACKSIZE__: type = weak, value = $0800; # 2k stack
+    __HIMEM__:     type = weak, value = $D000;
 }
 MEMORY {
-    ZP:       file = "", define = yes, start = $0002, size = $001A;
-    LOADADDR: file = %O,               start = $07FF, size = $0002;
-    HEADER:   file = %O,               start = $0801, size = $000C;
-    RAM:      file = %O, define = yes, start = $080D, size = $C7F3 - __STACKSIZE__;
+    ZP:       file = "", define = yes, start = $0002,           size = $001A;
+    LOADADDR: file = %O,               start = %S - 2,          size = $0002;
+    HEADER:   file = %O, define = yes, start = %S,              size = $000D;
+    RAM:      file = %O,               start = __HEADER_LAST__, size = __HIMEM__ - __STACKSIZE__ - __HEADER_LAST__;
+    MOVE:     file = %O,               start = __ZPSAVE_LOAD__, size = __HIMEM__ - __INIT_RUN__;
 }
 SEGMENTS {
-    LOADADDR: load = LOADADDR, type = ro;
-    EXEHDR:   load = HEADER,   type = ro;
-    STARTUP:  load = RAM,      type = ro;
-    LOWCODE:  load = RAM,      type = ro,                optional = yes;
-    INIT:     load = RAM,      type = ro,  define = yes, optional = yes;
-    CODE:     load = RAM,      type = ro;
-    RODATA:   load = RAM,      type = ro;
-    DATA:     load = RAM,      type = rw;
-    ZPSAVE:   load = RAM,      type = bss;
-    BSS:      load = RAM,      type = bss, define = yes;
-    ZEROPAGE: load = ZP,       type = zp;
+    ZEROPAGE: load = ZP,              type = zp;
+    LOADADDR: load = LOADADDR,        type = ro;
+    EXEHDR:   load = HEADER,          type = ro;
+    STARTUP:  load = RAM,             type = ro;
+    LOWCODE:  load = RAM,             type = ro,                optional = yes;
+    CODE:     load = RAM,             type = ro;
+    RODATA:   load = RAM,             type = ro;
+    DATA:     load = RAM,             type = rw;
+    ZPSAVE:   load = RAM,             type = bss, define = yes;
+    BSS:      load = RAM,             type = bss, define = yes;
+    INIT:     load = MOVE, run = RAM, type = ro,  define = yes, optional = yes;
 }
 FEATURES {
     CONDES: type    = constructor,