From: Christian Groessler <chris@groessler.org>
Date: Thu, 30 May 2013 00:26:15 +0000 (+0200)
Subject: Add two load chunks:
X-Git-Tag: V2.15~223^2~122
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=34cf7657e8a9d07a8cc4692cabd47acb9aeda112;p=cc65

Add two load chunks:
 - First chunk checks system (if it's XL and memory is ok).
 - Second chunk contains the contents for the shadow memory beneath the
   ROM and copies the contents to their destination address.
   It also moves the screen memory to low memory in front of the program.
---

diff --git a/cfg/atarixl.cfg b/cfg/atarixl.cfg
index 975d16213..cbd31bfe6 100644
--- a/cfg/atarixl.cfg
+++ b/cfg/atarixl.cfg
@@ -1,29 +1,67 @@
 FEATURES {
     STARTADDRESS: default = $2E00;
 }
+
 SYMBOLS {
     __STACKSIZE__:       type = weak, value = $0800; # 2k stack
     __RESERVED_MEMORY__: type = weak, value = $0000;
+    syschk:              type = import;  # force inclusion of SYSCHK
+    sramprep:            type = import;  # force inclusion of SRPREP
 }
+
 MEMORY {
-    ZP:      file = "", define = yes, start = $0082, size = $007E;
-    HEADER:  file = %O,               start = $0000, size = $0006;
-    RAM:     file = %O,               start = %S,    size = $BC20 - __STACKSIZE__ - %S;
-    TRAILER: file = %O,               start = $0000, size = $0006;
+    ZP:         file = "", define = yes, start = $0082,                  size = $007E;
+
+# just $FFFF
+    HEADER:     file = %O,               start = $0000,                  size = $0002;
+
+# "system check" load chunk
+    SYSCHKHDR:  file = %O,               start = $0000,                  size = $0004;
+    SYSCHK:     file = %O,               start = $2E00,                  size = $0E00;
+
+# "shadow RAM preparation" load chunk
+    SRPREPHDR:  file = %O,               start = $0000,                  size = $0004;
+    SRPREP:     file = %O,               start = %S,                     size = $7C20 - %S - $04FF;  # $04FF: space for temp. chargen buffer, page aligned
+    SRPREPTRL:  file = %O,               start = $0000,                  size = $0006;
+
+# "main program" load chunk
+    MAINHDR:    file = %O,               start = $0000,                  size = $0004;
+    RAM:        file = %O,               start = %S + __SAVEAREA_SIZE__, size = $D000 - __STACKSIZE__ - %S - __SAVEAREA_SIZE__;
+
+# address of relocated character generator
+    CHARGEN:    file = "", define = yes, start = $D800, size = $0400;
+
+# memory beneath the ROM
+    SHADOW_RAM: file = "", define = yes, start = $DC00, size = $FFF0 - $DC00;
+
+# defines entry point into program
+    TRAILER:    file = %O,               start = $0000, size = $0006;
 }
+
 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;
-    ZPSAVE:   load = RAM,     type = bss, define = yes;
-    BSS:      load = RAM,     type = bss, define = yes;
-    ZEROPAGE: load = ZP,      type = zp;
-    EXTZP:    load = ZP,      type = zp,                optional = yes;
-    AUTOSTRT: load = TRAILER, type = ro;
+    EXEHDR:     load = HEADER,                   type = ro;
+
+    SYSCHKHDR:  load = SYSCHKHDR,                type = ro,                optional = yes;
+    SYSCHK:     load = SYSCHK,                   type = rw,  define = yes, optional = yes;
+
+    SRPREPHDR:  load = SRPREPHDR,                type = ro;
+    SAVEAREA:   load = SRPREP,                   type = bss, define = yes;  # shared btw. SRPREP and RAM
+    SRPREP:     load = SRPREP,                   type = rw,  define = yes;
+    SHADOW_RAM: load = SRPREP, run = SHADOW_RAM, type = rw,  define = yes, optional = yes;
+    SRPREPTRL:  load = SRPREPTRL,                type = ro;
+
+    MAINHDR:    load = MAINHDR,                  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;
+    ZPSAVE:     load = RAM,                      type = bss, define = yes;
+    BSS:        load = RAM,                      type = bss, define = yes;
+    ZEROPAGE:   load = ZP,                       type = zp;
+    EXTZP:      load = ZP,                       type = zp,                optional = yes;
+    AUTOSTRT:   load = TRAILER,                  type = ro;
 }
 FEATURES {
     CONDES: type    = constructor,