Search found 110 matches
- Mon Jun 07, 2021 3:41 pm
- Forum: SOFTWARE
- Topic: FPU Compatible Software
- Replies: 61
- Views: 24904
Re: FPU Compatible Software
Install it in the auto folder. On a MSTE or ST with SFP-004 it should pass your FPUTEST program, allow starting GB's float test - but then crash. ah don't think I can test it then here as I can only really try it in steem. I don't have any FPU machines other than my Falcon. You could manipulate the...
- Mon Jun 07, 2021 3:29 pm
- Forum: SOFTWARE
- Topic: FPU Compatible Software
- Replies: 61
- Views: 24904
Re: FPU Compatible Software
Thx! Let me know if I should upload the archive with LFED here (zip including sources + binary is only 68 kb) for testing... If there is a simple thing to load so I can test GB6's patches... ? It's the LFED20.PRG in the zip (the original folder inside contains older stuff...). LINE_F.zip Install it...
- Mon Jun 07, 2021 11:28 am
- Forum: SOFTWARE
- Topic: FPU Compatible Software
- Replies: 61
- Views: 24904
Re: FPU Compatible Software
if your saying it will run LINEF type instructions, but that could crash GB6 if it's not emulating exactly like a real FPU via LINEF. Of course IO mapped isn't supported at all. The LineF emulation should make the machine behave as if the FPU was integrated on machines with 68020 or newer cpus and ...
- Sun Jun 06, 2021 9:50 pm
- Forum: SOFTWARE
- Topic: FPU Compatible Software
- Replies: 61
- Views: 24904
Re: FPU Compatible Software
Thx! Let me know if I should upload the archive with LFED here (zip including sources + binary is only 68 kb) for testing... This is what GB6 does.. 'I/O mapped FPU = 68000 + FPU 'line F built in FPU into CPU ot 688881/2 DEF fpu$ STATIC fpu& IF GETCOOKIE("_FPU",fpu&) THEN IF fpu&a...
- Sun Jun 06, 2021 8:31 pm
- Forum: SOFTWARE
- Topic: FPU Compatible Software
- Replies: 61
- Views: 24904
Re: FPU Compatible Software
I will have a look at GB6 FPU detection when I get home later. Also IIRC the FPU tests were done to be compatible between across all FPU setups. Also IIRC the 060 only had a basic list of internal instructions, so instructions were used which would be most compatible across all "types" of...
- Sun Jun 06, 2021 5:16 pm
- Forum: SOFTWARE
- Topic: FPU Compatible Software
- Replies: 61
- Views: 24904
Re: FPU Compatible Software
Some time ago I stumbled over the archive for fpu_emu (.zip) by H. Robbers & V. Hemsen. While being limited to support the memory mapped 68881 via LineF, it allows using the same FPU code that you would have used on system with 68020 (or newer) with FPUs. We just discussed a similar program (on...
- Sat Jun 05, 2021 5:48 pm
- Forum: SOFTWARE
- Topic: FPU Compatible Software
- Replies: 61
- Views: 24904
Re: FPU Compatible Software
Yes, that's correct, the startup code calls _fpuinit in the library to check for presence of a memory-mapped FPU. If you have removed that call from your own startup code, then its your fault ;) (there might however be reasons for it, some emulators may not like the bus-error that will result most ...
- Sat Jun 05, 2021 5:18 pm
- Forum: SOFTWARE
- Topic: FPU Compatible Software
- Replies: 61
- Views: 24904
Re: FPU Compatible Software
I'll have to run the link through the translator... when I see German my eye's glaze over and I usually turn my attention to something else. I have been using Pure C as my perferred development system on the Atari but documentation appears to be its weakest issue. Mark Williams C has good documenta...
- Sat Jun 05, 2021 4:52 pm
- Forum: SOFTWARE
- Topic: FPU Compatible Software
- Replies: 61
- Views: 24904
Re: FPU Compatible Software
When I put the 68882 in my MSTE a couple years ago I looked for apps that used it but didn't find any I was interested in running. Also when I looked into a C development system I didn't find any that had 68882 support for a 68k. Pure C applications, when linked with the default floating point supp...
- Sat Jun 05, 2021 4:46 pm
- Forum: SOFTWARE
- Topic: FPU Compatible Software
- Replies: 61
- Views: 24904
Re: FPU Compatible Software
(and it doesn't test speed of the LineF based FPU then either). That makes even less sense. You can't compare the speed of LineF instructions that are directly executed by a coprocessor, to something that has to be emulated in software (not completely, but it will still cause an exception, and the ...