-# linker config to produce simple NEC PC-Engine cartridge (.pce)
-
+# Linker config. to produce a NEC PC-Engine 8K, 16K, or 32K image (.bin)
SYMBOLS {
+ __CARTSIZE__: type = weak, value = $2000; # $2000, $4000, or $8000
__STACKSIZE__: type = weak, value = $0300; # 3 pages stack
}
-
MEMORY {
- # FIXME: is this correct? the first 3? bytes cant be used?
- ZP: file = "", start = $0003, size = $00FD, type = rw, define = yes;
-
- # reset-bank and hardware vectors
- ROM0: file = %O, start = $E000, size = $1FF6, fill = yes, define = yes;
- ROMV: file = %O, start = $FFF6, size = $000A, fill = yes;
-
- # first RAM page (also contains stack and zeropage)
- RAM: file = "", start = $2200, size = $1e00, define = yes;
+ ZP: file = "", start = $0000, define = yes, size = $0100;
+ # RAM bank
+ MAIN: file = "", start = $2200, define = yes, size = $1E00 - __STACKSIZE__;
+ # ROM banks, before swapping, and after mapping
+ ROM: file = %O, start = $10000 - __CARTSIZE__, size = __CARTSIZE__, fill = yes, fillval = $FF;
}
-
SEGMENTS {
- 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 = ROM0, type = ro, define = yes;
- ONCE: load = ROM0, type = ro, define = yes, optional = yes;
- CODE: load = ROM0, type = ro, define = yes;
- RODATA: load = ROM0, type = ro, define = yes;
- DATA: load = ROM0, run = RAM, type = rw, define = yes;
- BSS: load = RAM, type = bss, define = yes;
- VECTORS: load = ROMV, type = rw, define = yes;
+ ZEROPAGE: load = ZP, type = zp;
+ EXTZP: load = ZP, type = zp, optional = yes;
+ APPZP: load = ZP, type = zp, optional = yes;
+ DATA: load = ROM, run = MAIN, type = rw, define = yes;
+ INIT: load = MAIN, type = bss, optional = yes;
+ BSS: load = MAIN, type = bss, define = yes;
+ RODATA: load = ROM, type = ro;
+ CODE: load = ROM, type = ro;
+ LOWCODE: load = ROM, type = ro, optional = yes;
+ ONCE: load = ROM, type = ro, optional = yes;
+ STARTUP: load = ROM, type = ro, start = $FFF6 - $0066;
+ VECTORS: load = ROM, type = ro, start = $FFF6;
}
-
FEATURES {
CONDES: type = constructor,
label = __CONSTRUCTOR_TABLE__,