-# c version of 32kbyte config file
-# .data located in rom
-
-# ld65 config file
-# ld65 --config gamate.cfg -o <prog>.bin <prog>.o
+# linker config to produce simple Gamate cartridge (.bin)
SYMBOLS {
- __STARTUP__: type = import;
- __STACKSIZE__: type = weak, value = $0300; # 3 pages stack
+ __STARTUP__: type = import;
+ __STACKSIZE__: type = weak, value = $0080; # 1 page stack
}
MEMORY {
- ZP: start = $0000, size = $100;
- CPUSTACK: start = $0100, size =$100;
- RAM: start = $0200, size = $200, define = yes;
-# ROM: start = $6000, size = $8000, fill = yes, fillval = $ff, file = %O, define = yes;
-# STARTUP: file = %O, define = yes, start = $6000, size = $29, fill = yes;
-# ROM: start = $6000 + __STARTUP_SIZE__, size = $8000 - __STARTUP_SIZE__, fill = yes, fillval = $ff, file = %O, define = yes;
-# WARNING: fill value must be $00 else it will no more work
- ROM: start = $6000, size = $8000, fill = yes, fillval = $00, file = %O, define = yes;
+ # 0000-03ff is RAM
+ # FIXME: what zp range can we actually use?
+ # $0a-$11 is used by IRQ/NMI, $e8 is used by NMI
+ ZP: start = $0012, size = $00E8 - $0012;
+ CPUSTACK: start = $0100, size = $0100;
+ RAM: start = $0200, size = $0200 - __STACKSIZE__, define = yes;
+
+ CARTHEADER: file = %O, define = yes, start = %S, size = $0029;
+ # 6000-e000 can be (Cartridge) ROM
+ # WARNING: fill value must be $00 else it will no more work
+ #ROM: start = $6000, size = $1000, fill = yes, fillval = $00, file = %O, define = yes;
+ #ROMFILL: start = $7000, size = $7000, fill = yes, fillval = $00, file = %O, define = yes;
+ # for images that have code >$6fff we must calculate the checksum!
+ ROM: start = $6000 + $0029, size = $8000 - $0029, fill = yes, fillval = $00, file = %O, define = yes;
}
SEGMENTS {
- ZEROPAGE: load = ZP, type = zp, define = yes;
- STARTUP: load = ROM, type = ro, define=yes;
- CODE: load = ROM, type = ro, define=yes;
- RODATA: load = ROM, type = ro, define=yes;
- DATA: load = ROM, run=RAM, type = rw, define = yes;
- BSS: load = RAM, type = bss, define = yes;
+ ZEROPAGE: load = ZP, type = zp, define = yes;
+ EXTZP: load = ZP, type = zp, define = yes, optional = yes;
+ APPZP: load = ZP, type = zp, define = yes, optional = yes;
+ STARTUP: load = CARTHEADER, type = ro, define = yes;
+ ONCE: load = ROM, type = ro, optional = yes;
+ CODE: load = ROM, type = ro, define = yes;
+ RODATA: load = ROM, type = ro, define = yes;
+ DATA: load = ROM, run = RAM, type = rw, define = yes;
+ BSS: load = RAM, type = bss, define = yes;
}
FEATURES {
- CONDES: segment = RODATA,
- type = constructor,
- label = __CONSTRUCTOR_TABLE__,
- count = __CONSTRUCTOR_COUNT__;
- CONDES: segment = RODATA,
- type = destructor,
- label = __DESTRUCTOR_TABLE__,
- count = __DESTRUCTOR_COUNT__;
+ CONDES: type = constructor,
+ label = __CONSTRUCTOR_TABLE__,
+ count = __CONSTRUCTOR_COUNT__,
+ segment = ONCE;
+ CONDES: type = destructor,
+ label = __DESTRUCTOR_TABLE__,
+ count = __DESTRUCTOR_COUNT__,
+ segment = RODATA;
+ CONDES: type = interruptor,
+ label = __INTERRUPTOR_TABLE__,
+ count = __INTERRUPTOR_COUNT__,
+ segment = RODATA,
+ import = __CALLIRQ__;
}