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Add two load chunks:

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- First chunk checks system (if it's XL and memory is ok).
 - Second chunk contains the contents for the shadow memory beneath the
   ROM and copies the contents to their destination address.
   It also moves the screen memory to low memory in front of the program.
This commit is contained in:
Christian Groessler 2013-05-30 02:26:15 +02:00
parent 7572834ebf
commit 34cf7657e8
1 changed files with 54 additions and 16 deletions
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70
cfg/atarixl.cfg
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@ -1,29 +1,67 @@
FEATURES {
STARTADDRESS: default = $2E00;
}
SYMBOLS {
__STACKSIZE__: type = weak, value = $0800; # 2k stack
__RESERVED_MEMORY__: type = weak, value = $0000;
syschk: type = import; # force inclusion of SYSCHK
sramprep: type = import; # force inclusion of SRPREP
}
MEMORY {
ZP: file = "", define = yes, start = $0082, size = $007E;
HEADER: file = %O, start = $0000, size = $0006;
RAM: file = %O, start = %S, size = $BC20 - __STACKSIZE__ - %S;
TRAILER: file = %O, start = $0000, size = $0006;
ZP: file = "", define = yes, start = $0082, size = $007E;
# just $FFFF
HEADER: file = %O, start = $0000, size = $0002;
# "system check" load chunk
SYSCHKHDR: file = %O, start = $0000, size = $0004;
SYSCHK: file = %O, start = $2E00, size = $0E00;
# "shadow RAM preparation" load chunk
SRPREPHDR: file = %O, start = $0000, size = $0004;
SRPREP: file = %O, start = %S, size = $7C20 - %S - $04FF; # $04FF: space for temp. chargen buffer, page aligned
SRPREPTRL: file = %O, start = $0000, size = $0006;
# "main program" load chunk
MAINHDR: file = %O, start = $0000, size = $0004;
RAM: file = %O, start = %S + __SAVEAREA_SIZE__, size = $D000 - __STACKSIZE__ - %S - __SAVEAREA_SIZE__;
# address of relocated character generator
CHARGEN: file = "", define = yes, start = $D800, size = $0400;
# memory beneath the ROM
SHADOW_RAM: file = "", define = yes, start = $DC00, size = $FFF0 - $DC00;
# defines entry point into program
TRAILER: file = %O, start = $0000, size = $0006;
}
SEGMENTS {
EXEHDR: load = HEADER, 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;
ZPSAVE: load = RAM, type = bss, define = yes;
BSS: load = RAM, type = bss, define = yes;
ZEROPAGE: load = ZP, type = zp;
EXTZP: load = ZP, type = zp, optional = yes;
AUTOSTRT: load = TRAILER, type = ro;
EXEHDR: load = HEADER, type = ro;
SYSCHKHDR: load = SYSCHKHDR, type = ro, optional = yes;
SYSCHK: load = SYSCHK, type = rw, define = yes, optional = yes;
SRPREPHDR: load = SRPREPHDR, type = ro;
SAVEAREA: load = SRPREP, type = bss, define = yes; # shared btw. SRPREP and RAM
SRPREP: load = SRPREP, type = rw, define = yes;
SHADOW_RAM: load = SRPREP, run = SHADOW_RAM, 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;
ZPSAVE: load = RAM, type = bss, define = yes;
BSS: load = RAM, type = bss, define = yes;
ZEROPAGE: load = ZP, type = zp;
EXTZP: load = ZP, type = zp, optional = yes;
AUTOSTRT: load = TRAILER, type = ro;
}
FEATURES {
CONDES: type = constructor,