X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=cfg%2Fatari-overlay.cfg;h=9311a1b229d2e3526213872b9cacb2f0946beb83;hb=df80d071e8eeb799bd1d8ec55acd1ee92714c752;hp=6ccb5f6022c18b702783f1a808d747d128d01c20;hpb=78473f73c9532f1c97f4b3a7c94d7194af19f2f0;p=cc65

diff --git a/cfg/atari-overlay.cfg b/cfg/atari-overlay.cfg
index 6ccb5f602..9311a1b22 100644
--- a/cfg/atari-overlay.cfg
+++ b/cfg/atari-overlay.cfg
@@ -1,53 +1,75 @@
 FEATURES {
-    STARTADDRESS: default = $2E00;
+    STARTADDRESS: default = $2000;
 }
 SYMBOLS {
+    __EXEHDR__:          type = import;
+    __SYSTEM_CHECK__:    type = import;  # force inclusion of "system check" load chunk
+    __AUTOSTART__:       type = import;  # force inclusion of autostart "trailer"
     __STACKSIZE__:       type = weak, value = $0800; # 2k stack
     __OVERLAYSIZE__:     type = weak, value = $1000; # 4k overlay
+    __STARTADDRESS__:    type = export, value = %S;
     __RESERVED_MEMORY__: type = weak, value = $0000;
 }
 MEMORY {
-    ZP:      file = "", define = yes, start = $0082,                size = $007E;
-    HEADER:  file = %O,               start = $0000,                size = $0006;
-    RAM:     file = %O,               start = %S + __OVERLAYSIZE__, size = $BC20 - __STACKSIZE__ - __OVERLAYSIZE__ - %S;
-    TRAILER: file = %O,               start = $0000,                size = $0006;
-    OVL1:    file = "%O.1",           start = %S,                   size = __OVERLAYSIZE__;
-    OVL2:    file = "%O.2",           start = %S,                   size = __OVERLAYSIZE__;
-    OVL3:    file = "%O.3",           start = %S,                   size = __OVERLAYSIZE__;
-    OVL4:    file = "%O.4",           start = %S,                   size = __OVERLAYSIZE__;
-    OVL5:    file = "%O.5",           start = %S,                   size = __OVERLAYSIZE__;
-    OVL6:    file = "%O.6",           start = %S,                   size = __OVERLAYSIZE__;
-    OVL7:    file = "%O.7",           start = %S,                   size = __OVERLAYSIZE__;
-    OVL8:    file = "%O.8",           start = %S,                   size = __OVERLAYSIZE__;
-    OVL9:    file = "%O.9",           start = %S,                   size = __OVERLAYSIZE__;
+    ZP:         file = "", define = yes, start = $0082,                size = $007E;
+
+# file header, just $FFFF
+    HEADER:     file = %O,               start = $0000,                size = $0002;
+
+# "system check" load chunk
+    SYSCHKHDR:  file = %O,               start = $0000,                size = $0004;
+    SYSCHKCHNK: file = %O,               start = $2E00,                size = $0300;
+    SYSCHKTRL:  file = %O,               start = $0000,                size = $0006;
+
+# "main program" load chunk
+    MAINHDR:    file = %O,               start = $0000,                size = $0004;
+    MAIN:       file = %O, define = yes, start = %S + __OVERLAYSIZE__, size = $BC20 - __OVERLAYSIZE__ - __STACKSIZE__ - __RESERVED_MEMORY__ - %S;
+    TRAILER:    file = %O,               start = $0000,                size = $0006;
+
+# overlays
+    OVL1:       file = "%O.1",           start = %S,                   size = __OVERLAYSIZE__;
+    OVL2:       file = "%O.2",           start = %S,                   size = __OVERLAYSIZE__;
+    OVL3:       file = "%O.3",           start = %S,                   size = __OVERLAYSIZE__;
+    OVL4:       file = "%O.4",           start = %S,                   size = __OVERLAYSIZE__;
+    OVL5:       file = "%O.5",           start = %S,                   size = __OVERLAYSIZE__;
+    OVL6:       file = "%O.6",           start = %S,                   size = __OVERLAYSIZE__;
+    OVL7:       file = "%O.7",           start = %S,                   size = __OVERLAYSIZE__;
+    OVL8:       file = "%O.8",           start = %S,                   size = __OVERLAYSIZE__;
+    OVL9:       file = "%O.9",           start = %S,                   size = __OVERLAYSIZE__;
 }
 SEGMENTS {
-    EXEHDR:   load = HEADER,  type = ro;
-    STARTUP:  load = RAM,     type = ro,  define = yes;
-    LOWCODE:  load = RAM,     type = ro,  define = yes, optional = yes;
-    INIT:     load = RAM,     type = ro,                optional = yes;
-    CODE:     load = RAM,     type = ro,  define = yes;
-    RODATA:   load = RAM,     type = ro;
-    DATA:     load = RAM,     type = rw;
-    BSS:      load = RAM,     type = bss, define = yes;
-    ZEROPAGE: load = ZP,      type = zp;
-    EXTZP:    load = ZP,      type = zp,                optional = yes;
-    AUTOSTRT: load = TRAILER, type = ro;
-    OVERLAY1: load = OVL1,    type = ro,  define = yes, optional = yes;
-    OVERLAY2: load = OVL2,    type = ro,  define = yes, optional = yes;
-    OVERLAY3: load = OVL3,    type = ro,  define = yes, optional = yes;
-    OVERLAY4: load = OVL4,    type = ro,  define = yes, optional = yes;
-    OVERLAY5: load = OVL5,    type = ro,  define = yes, optional = yes;
-    OVERLAY6: load = OVL6,    type = ro,  define = yes, optional = yes;
-    OVERLAY7: load = OVL7,    type = ro,  define = yes, optional = yes;
-    OVERLAY8: load = OVL8,    type = ro,  define = yes, optional = yes;
-    OVERLAY9: load = OVL9,    type = ro,  define = yes, optional = yes;
+    ZEROPAGE:  load = ZP,         type = zp;
+    EXTZP:     load = ZP,         type = zp,                optional = yes;
+    EXEHDR:    load = HEADER,     type = ro;
+    SYSCHKHDR: load = SYSCHKHDR,  type = ro,                optional = yes;
+    SYSCHK:    load = SYSCHKCHNK, type = rw,  define = yes, optional = yes;
+    SYSCHKTRL: load = SYSCHKTRL,  type = ro,                optional = yes;
+    MAINHDR:   load = MAINHDR,    type = ro;
+    STARTUP:   load = MAIN,       type = ro,  define = yes;
+    LOWBSS:    load = MAIN,       type = rw,                optional = yes;  # not zero initialized
+    LOWCODE:   load = MAIN,       type = ro,  define = yes, optional = yes;
+    ONCE:      load = MAIN,       type = ro,                optional = yes;
+    CODE:      load = MAIN,       type = ro,  define = yes;
+    RODATA:    load = MAIN,       type = ro;
+    DATA:      load = MAIN,       type = rw;
+    INIT:      load = MAIN,       type = rw,                optional = yes;
+    BSS:       load = MAIN,       type = bss, define = yes;
+    AUTOSTRT:  load = TRAILER,    type = ro;
+    OVERLAY1:  load = OVL1,       type = ro,  define = yes, optional = yes;
+    OVERLAY2:  load = OVL2,       type = ro,  define = yes, optional = yes;
+    OVERLAY3:  load = OVL3,       type = ro,  define = yes, optional = yes;
+    OVERLAY4:  load = OVL4,       type = ro,  define = yes, optional = yes;
+    OVERLAY5:  load = OVL5,       type = ro,  define = yes, optional = yes;
+    OVERLAY6:  load = OVL6,       type = ro,  define = yes, optional = yes;
+    OVERLAY7:  load = OVL7,       type = ro,  define = yes, optional = yes;
+    OVERLAY8:  load = OVL8,       type = ro,  define = yes, optional = yes;
+    OVERLAY9:  load = OVL9,       type = ro,  define = yes, optional = yes;
 }
 FEATURES {
     CONDES: type    = constructor,
             label   = __CONSTRUCTOR_TABLE__,
             count   = __CONSTRUCTOR_COUNT__,
-            segment = INIT;
+            segment = ONCE;
     CONDES: type    = destructor,
             label   = __DESTRUCTOR_TABLE__,
             count   = __DESTRUCTOR_COUNT__,