Default atatixl.cfg file now leaves the character generator at $E000.

This reduces the potential to flicker, but creates two separate
memory areas in the high memory.
For applications which require a large continuous memory space in
high memory, atarixl-largehimem.cfg is provided. With high IRQ
activity or DL interrupt there might be flicker.

diff --git a/cfg/atarixl-largehimem.cfg b/cfg/atarixl-largehimem.cfg
new file mode 100644 (file)
index 0000000..94aff46
--- /dev/null
+++ b/cfg/atarixl-largehimem.cfg
@@ -0,0 +1,89 @@
+FEATURES {
+    STARTADDRESS: default = $2400;
+}
+
+SYMBOLS {
+    __STACKSIZE__:       type = weak, value = $0800; # 2k stack
+    __STARTADDRESS__:    type = export, value = %S;
+    syschk:              type = import;  # force inclusion of SYSCHK
+    sramprep:            type = import;  # force inclusion of SRPREP
+}
+
+MEMORY {
+    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;
+    SYSCHKCHNK:    file = %O,               start = $2E00,                  size = $0300;
+    SYSCHKTRL:     file = %O,               start = $0000,                  size = $0006;
+
+# "shadow RAM preparation" load chunk
+    SRPREPHDR:     file = %O,               start = $0000,                  size = $0004;
+    SRPREPCHNK:    file = %O, define = yes, start = %S,                     size = $7C20 - %S - $07FF;  # $07FF: space for temp. chargen buffer, 1K aligned
+    SRPREPTRL:     file = %O,               start = $0000,                  size = $0006;
+
+# "main program" load chunk
+    MAINHDR:       file = %O,               start = $0000,                  size = $0004;
+    RAM:           file = %O, define = yes, start = %S +
+                                                   __SAVEAREA_SIZE__ +
+                                                   __LOWDATA_SIZE__, size = $D000 -
+                                                                            __STACKSIZE__ -
+                                                                            %S -
+                                                                            __SAVEAREA_SIZE__ -
+                                                                            __LOWDATA_SIZE__;
+
+# defines entry point into program
+    TRAILER:       file = %O,               start = $0000, size = $0006;
+
+# address of relocated character generator
+    CHARGEN:       file = "", define = yes, start = $D800, size = $0400;
+
+# memory beneath the ROM
+    HIDDEN_RAM:    file = "", define = yes, start = $DC00, size = $FFF0 - $DC00;
+}
+
+SEGMENTS {
+    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;
+
+    SRPREPHDR:  load = SRPREPHDR,                   type = ro;
+    SAVEAREA:   load = SRPREPCHNK,                  type = bss, define = yes;  # shared btw. SRPREP and RAM
+    LOWDATA:    load = SRPREPCHNK,                  type = bss, define = yes;  #   "  "  "  "  "  "  "  "
+    SRPREP:     load = SRPREPCHNK,                  type = rw,  define = yes;
+    SHADOW_RAM:  load = SRPREPCHNK, run = HIDDEN_RAM, type = rw,  define = yes, optional = yes;
+    SHADOW_RAM2: load = SRPREPCHNK, run = HIDDEN_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;
+    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,
+            label   = __CONSTRUCTOR_TABLE__,
+            count   = __CONSTRUCTOR_COUNT__,
+            segment = INIT;
+    CONDES: type    = destructor,
+            label   = __DESTRUCTOR_TABLE__,
+            count   = __DESTRUCTOR_COUNT__,
+            segment = RODATA;
+    CONDES: type    = interruptor,
+            label   = __INTERRUPTOR_TABLE__,
+            count   = __INTERRUPTOR_COUNT__,
+            segment = RODATA,
+            import  = __CALLIRQ__;
+}

diff --git a/cfg/atarixl.cfg b/cfg/atarixl.cfg
index 94aff46a59bce26535dde8d2dda8bb995e9122e1..e400c6beac1f9a9ee008e78bce43900373daaf35 100644 (file)
--- a/cfg/atarixl.cfg
+++ b/cfg/atarixl.cfg
@@ -38,11 +38,14 @@ MEMORY {
 # defines entry point into program
     TRAILER:       file = %O,               start = $0000, size = $0006;
 
-# address of relocated character generator
-    CHARGEN:       file = "", define = yes, start = $D800, size = $0400;
+# memory beneath the ROM preceeding the character generator
+    HIDDEN_RAM2:   file = "", define = yes, start = $D800, size = $0800;
+
+# address of relocated character generator (same addess as ROM version)
+    CHARGEN:       file = "", define = yes, start = $E000, size = $0400;
 
 # memory beneath the ROM
-    HIDDEN_RAM:    file = "", define = yes, start = $DC00, size = $FFF0 - $DC00;
+    HIDDEN_RAM:    file = "", define = yes, start = $E400, size = $FFF0 - $E400;
 }
 
 SEGMENTS {
@@ -56,8 +59,8 @@ SEGMENTS {
     SAVEAREA:   load = SRPREPCHNK,                  type = bss, define = yes;  # shared btw. SRPREP and RAM
     LOWDATA:    load = SRPREPCHNK,                  type = bss, define = yes;  #   "  "  "  "  "  "  "  "
     SRPREP:     load = SRPREPCHNK,                  type = rw,  define = yes;
-    SHADOW_RAM:  load = SRPREPCHNK, run = HIDDEN_RAM, type = rw,  define = yes, optional = yes;
-    SHADOW_RAM2: load = SRPREPCHNK, run = HIDDEN_RAM, type = rw,  define = yes, optional = yes;
+    SHADOW_RAM:  load = SRPREPCHNK, run = HIDDEN_RAM,  type = rw,  define = yes, optional = yes;
+    SHADOW_RAM2: load = SRPREPCHNK, run = HIDDEN_RAM2, type = rw,  define = yes, optional = yes;
     SRPREPTRL:  load = SRPREPTRL,                   type = ro;
 
     MAINHDR:    load = MAINHDR,                     type = ro;