From ad5646c813f1068342592a63646de7ba5dae7c3c Mon Sep 17 00:00:00 2001 From: "B. Watson" Date: Mon, 13 Apr 2026 06:08:41 -0400 Subject: Move crt0.s STARTUP segment to page 6 (where it can be overwritten by edit_box after it runs). 7729 bytes free. --- config/atari.cfg | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 config/atari.cfg (limited to 'config/atari.cfg') diff --git a/config/atari.cfg b/config/atari.cfg new file mode 100644 index 0000000..301bee7 --- /dev/null +++ b/config/atari.cfg @@ -0,0 +1,56 @@ +# This is the original atari.cfg inherited from netcat. +# It's not the default one that ships with cc65: it doesn't +# have the "memcheck" segment. + +FEATURES { + STARTADDRESS: default = $2000; +} +SYMBOLS { + __EXEHDR__: type = import; + __AUTOSTART__: type = import; # force inclusion of autostart "trailer" + __STACKSIZE__: type = weak, value = $0100; + __STARTADDRESS__: type = export, value = %S; + __RESERVED_MEMORY__: type = weak, value = $0000; +} +MEMORY { + ZP: file = "", define = yes, start = $0082, size = $007E; + +# file header, just $FFFF + HEADER: file = %O, start = $0000, size = $0002; + +# "main program" load chunk + MAINHDR: file = %O, start = $0000, size = $0004; + MAIN: file = %O, define = yes, start = %S, size = $8000 - __STACKSIZE__ - __RESERVED_MEMORY__ - %S; + TRAILER: file = %O, start = $0000, size = $0006; +} +SEGMENTS { + ZEROPAGE: load = ZP, type = zp; + EXTZP: load = ZP, type = zp, optional = yes; + EXEHDR: load = HEADER, type = ro; + MAINHDR: load = MAINHDR, type = ro; + STARTUP: load = MAIN, type = ro, define = yes; + LOWBSS: load = MAIN, type = rw, optional = yes; # not zero initialized + 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; +} +FEATURES { + 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__; +} -- cgit v1.2.3