FEATURES {
- STARTADDRESS: default = $2E00;
+ STARTADDRESS: default = $2400;
}
SYMBOLS {
- __STACKSIZE__: type = weak, value = $0800; # 2k stack
- __OVERLAYSIZE__: type = weak, value = $1000; # 4k overlay
- __RESERVED_MEMORY__: type = weak, value = $0000;
+ __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;
}
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;
+
+# 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 + __OVERLAYSIZE__, size = $7C20 - %S - __OVERLAYSIZE__ - $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;
+ MAIN: file = %O, define = yes, start = %S + __OVERLAYSIZE__ +
+ __LOWBSS_SIZE__, size = $D000 - __STACKSIZE__ - %S - __OVERLAYSIZE__ - __LOWBSS_SIZE__;
+
+# defines entry point into program
+ TRAILER: file = %O, start = $0000, size = $0006;
+
+# 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 = $E400, size = $FFFA - $E400;
+
+# 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;
- 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;
- 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;
+
+ SRPREPHDR: load = SRPREPHDR, type = ro;
+ LOWBSS: load = SRPREPCHNK, type = bss, define = yes; # shared btw. SRPREPCHNK and RAM, not zero initialized
+ 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_RAM2, type = rw, define = yes, optional = yes;
+ SRPREPTRL: load = SRPREPTRL, type = ro;
+
+ MAINHDR: load = MAINHDR, type = ro;
+ STARTUP: load = MAIN, type = ro, define = yes;
+ 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__,
projects / cc65 / blobdiff