-B
FEATURES {
STARTADDRESS: default = $2400;
}
-
SYMBOLS {
- __STACKSIZE__: type = weak, value = $0800; # 2k stack
- __OVERLAYSIZE__: type = weak, value = $1000; # 4k overlay
- __STARTADDRESS__: type = export, value = %S;
- syschk: type = import; # force inclusion of SYSCHK
- sramprep: type = import; # force inclusion of SRPREP
+ __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;
+ ZP: file = "", define = yes, start = $0082, size = $007E;
# just $FFFF
- HEADER: file = %O, start = $0000, size = $0002;
+ 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;
+ 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;
+ 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;
- RAM: file = %O, define = yes, start = %S +
- __OVERLAYSIZE__ +
- __LOWDATA_SIZE__, size = $D000 -
- __STACKSIZE__ -
- %S -
- __OVERLAYSIZE__ -
- __LOWDATA_SIZE__;
+ 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;
+ TRAILER: file = %O, start = $0000, size = $0006;
# memory beneath the ROM preceeding the character generator
- HIDDEN_RAM2: file = "", define = yes, start = $D800, size = $0800;
+ 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;
+ CHARGEN: file = "", define = yes, start = $E000, size = $0400;
# memory beneath the ROM
- HIDDEN_RAM: file = "", define = yes, start = $E400, size = $FFFA - $E400;
+ 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__;
+ 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 {
+ ZEROPAGE: load = ZP, type = zp;
+ EXTZP: load = ZP, type = zp, optional = yes;
+
EXEHDR: load = HEADER, type = ro;
SYSCHKHDR: load = SYSCHKHDR, type = ro, optional = yes;
SYSCHKTRL: load = SYSCHKTRL, type = ro, optional = yes;
SRPREPHDR: load = SRPREPHDR, type = ro;
- LOWDATA: load = SRPREPCHNK, type = bss, define = yes; # shared btw. SRPREP and RAM
+ 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 = 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;
+ 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;
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