/* * UAE - The Un*x Amiga Emulator * * User configuration options * * Copyright 1995, 1996 Bernd Schmidt */ /* * Please note: Many things are configurable with command line parameters, * and you can put anything you can pass on the command line into a * configuration file ~/.uaerc. Please read the documentation for more * information. * * NOTE NOTE NOTE * Whenever you change something in this file, you have to "make clean" * afterwards. * Don't remove the '#' signs. If you want to enable something, move it out * of the C comment block, if you want to disable something, move it inside * the block. */ /* * Note to porters: * In an ideal world, all users can compile their own versions of UAE and * select the options they need. Since hardly anyone has a C compiler for * DOS, Windows or Macs, that's not possible. If you want to do your users * a favour, please distribute three different versions of UAE: * * 1. A fast one: no sound compiled in, NO_EXCEPTION_3 and NO_PREFETCH_BUFFER * 2. A slightly slower one: as above, but with sound compiled in * 3. A dog slow but compatible one: sound, exception 3 and prefetch emulated. * * None of these should be a "default" version, since all of these have * different problems. * * I know it's a pain, but it's your own fault if you don't use a real OS * that comes with a C compiler ;) * If you really can't be bothered, omit version 1, but please do distribute * versions 2 and 3. */ /* * CPU level: 0 = 68000, 1 = 68010, 2 = 68020, 3 = 68020/68881 * If configured for 68020, the emulator will be a little slower. */ #ifdef BUILD_68000 #define CPU_LEVEL 0 #else #define CPU_LEVEL 3 #endif /* * When these two are enabled, a subset of the ECS features is emulated. * Actually, it's only the chip identification and big blits. This may be * enough to persuade some ECS programs to run. * DON'T enable SuperHires or Productivity modes. They are not emulated, * and will look very messy. NTSC doesn't work either. * OS versions 2.0+ don't like ECS_DENISE at the moment. #define ECS_DENISE */ #define ECS_AGNUS /* * If you don't have any sound hardware, or if you don't want to use it, then * this option may make the emulator a little faster. I don't really know * whether it's worthwhile, so if you have any results with this one, tell * me about it. * This will be overridden if you pass "--enable-sound" to configure. #define DONT_WANT_SOUND */ /* * When USE_COMPILER is defined, a m68k->i386 instruction compiler will be * used. This is experimental. It has only been tested on a Linux/i386 ELF * machine, although it might work on other i386 Unices. * This is supposed to speed up application programs. It will not work very * well for hardware bangers like games and demos, in fact it will be much * slower. It can also be slower for some applications and/or benchmarks. * It needs a lot of tuning. Please let me know your results with this. * The second define, RELY_ON_LOADSEG_DETECTION, decides how the compiler * tries to detect self-modifying code. If it is not set, the first bytes * of every compiled routine are used as checksum before executing the * routine. If it is set, the UAE filesystem will perform some checks to * detect whether an executable is being loaded. This is less reliable * (it won't work if you don't use the harddisk emulation, so don't try to * use floppies or even the RAM disk), but much faster. #define USE_COMPILER #define RELY_ON_LOADSEG_DETECTION */ /* * Set USER_PROGRAMS_BEHAVE to 1 or 2 to indicate that you are only running * non-hardware banging programs which leave all the dirty work to the * Kickstart. This affects the compiler, and on Linux systems it also * affects the normal CPU emulation. Any program that is _not_ in the ROM * (i.e. everything but the Kickstart) will use faster memory access * functions. * There is of course the problem that the Amiga doesn't really distinguish * between user programs and the kernel. Not all of the OS is in the ROM, * e.g. the parallel.device is on the disk and gets loaded into RAM at least * with Kickstart 1.3 (don't know about newer Kickstarts). So you probably * can't print, and some other stuff may also fail to work. * A useless option, really, given the way lots of Amiga software is written. #define USER_PROGRAMS_BEHAVE 0 */ /*************************************************************************** * Operating system/machine specific options * Configure these for your CPU. The default settings should work on any * machine, but may not give optimal performance everywhere. */ /* * This option enables a different planar->chunky conversion routine. It may * work slightly faster on some machines, it will work a lot slower on others, * and it will crash most RISC machines. * It seems to be a win on the Pentium. No idea about other x86's. */ #define UNALIGNED_PROFITABLE /* * Define this on PPro's, K6's and maybe other non-x86 CPUs. */ #if ( defined _MSC_VER && ( _M_IX86 == 600 ) ) || defined __GNUC__ #define MULTIPLICATION_PROFITABLE #endif /* * Define this if memory accesses have a high cost on your machine. That's * true for basically any processor available these days. I recommend it for * P200 upwards. */ #define MEMORY_IS_EXPENSIVE /* * PPros don't like branches. With this option, UAE tries to avoid them in some * places. */ #if ( defined _MSC_VER && ( _M_IX86 == 600 ) ) || defined __GNUC__ #define BRANCHES_ARE_EXPENSIVE #endif /* * Define this option if you have a very fast Pentium or another x86 CPU that * understands the RDTSC instruction. When enabled, it will make sure that the * frame rate does not exceed 50Hz. This will give slightly more speed to the * CPU emulation. On slow systems (say, worse than a P166), you don't have to * worry about the frame rate being too high anyway unless you run only boring * WB-based stuff. */ #define HAVE_RDTSC /*************************************************************************** * Support for broken software. These options are set to default values * that are reasonable for most uses. You should not need to change these. */ /* * Unfortunately, there are people who think it's way k00l to play stupid * tricks with the MC68000, the CPU of the Amiga. Enable this option to * emulate the prefetch buffer. You don't have to know what a prefetch buffer * is, you should know however that it's needed for better compatibility and * that emulating it makes the emulator somewhat slower. */ #ifndef BUILD_COMPATIBLE #define NO_PREFETCH_BUFFER #endif /* * Some STUPID programs access a longword at an odd address and expect to * end up at the routine given in the vector for exception 3. * (For example, Katakis does this). And yes, I know it's legal, but it's dumb * anyway. * If you leave this commented in, memory accesses will be faster, * but some programs may fail for an obscure reason. */ #ifndef BUILD_COMPATIBLE #define NO_EXCEPTION_3 #endif /* * If you want to see the "Hardwired" demo, you need to define this. * Otherwise, it will say "This demo don't like Axel" - apparently, Axel * has a 68040. * NEWS FLASH! My sources tell me that "Axel" stands for accelerator. Not * that it really matters... #define WANT_SLOW_MULTIPLY */ /* * This variable was introduced because a program could do a Bcc from * whithin chip memory to a location whitin expansion memory. With a * pointer variable the program counter would point to the wrong location. * With this variable unset the program counter is always correct, but * programs will run slower (about 4%). * Usually, you'll want to have this defined. * @@@ Does anyone know a program that doesn't work with this? I'd like * to remove this option. */ #define USE_POINTER /* * This variable determines whether or not this platform has implemented * Picasso96 support. */ #define PICASSO96_SUPPORTED