nes.cfg

SYMBOLS {
    __STACK_START__: type = weak, value = $0700; # 1 pages stack
    __STACK_SIZE__:  type = weak, value = $0100; # 1 pages stack
}
MEMORY {
    # Zero Page
    ZP:     file = "", start = $0000, size = $0100, type = rw, define = yes;
        # RAM copy of sprite data
        OAM1: start = $0200, size = $0100, define = yes;
        # regular ram
        RAM:  start = $0500, size = $0200, define = yes;

    # INES Cartridge Header
    HEADER: file = %O, start = $0000, size = $0010, fill = yes;

    
    # 2 16K PRG ROM Banks
    # - startup
    # - code
    # - rodata
    # - data (load)
    PRG:   file = %O, start = $C000, size = $3FFA, fill = yes, define = yes;

    # Hardware Vectors at End of 2nd 8K ROM
    VECTORS:   file = %O, start = $FFFA, size = $0006, fill = yes;

    # 1 8k CHR Bank
    CHR:   file = %O, start = $0000, size = $2000, fill = yes;

    # standard 2k SRAM (-zeropage)
    # $0100-$0200 cpu stack
    # $0200-$0500 3 pages for ppu memory write buffer
    # $0500-$0800 3 pages for cc65 parameter stack
    #SRAM:   file = "", start = $0100, size = __STACK_SIZE__, define = yes;
    #RAM:    start = $0300, size = $0500, define = yes;

    # additional 8K SRAM Bank
    # - data (run)
    # - bss
    # - heap
    #RAM2:   file = %O, start = $6000, size = $2000, define = yes;
}
SEGMENTS {
    HEADER:   load = HEADER,          type = ro;
    STARTUP:  load = PRG,             type = ro,  define = yes;
    LOWCODE:  load = PRG,             type = ro,                optional = yes;
    CODE:     load = PRG,             type = ro,  define = yes;
    INIT:     load = PRG,             type = ro,  define = yes, optional = yes;
    MUSIC:    load = PRG,             type = ro,  define = yes;
    RODATA:   load = PRG,             type = ro,  define = yes;
    DATA:     load = PRG, run = RAM,  type = rw,  define = yes;
    VECTORS:  load = VECTORS,         type = rw;
    CHARS:    load = CHR,             type = rw;
    BSS:      load = RAM,             type = bss, define = yes;
    HEAP:     load = RAM,             type = bss, optional = yes;
    ZEROPAGE: load = ZP,              type = zp;
        OAM:      load = OAM1,        type = bss, define = yes;
        ONCE:     load = PRG,         type = ro,  define = yes;
}
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__;
}