Hello Charlie,
thanks for your help.
Karoly Balogh (Charlie/SGR) <char...@scenergy.dfmk.hu> writes:
Hi Carsten,
On Thu, 17 Dec 2020, Carsten Strotmann via fpc-pascal wrote:
I've trying FPC on an Vampire 4 SA machine with ApolloOS/AROS
m68k.
Which version of FPC are you trying? Trunk, 3.2.0 stable, you
built your
own, or you downloaded one of the official Amiga releases?
it's the one that comes pre-installed with the Vampire 4 SA. I
really
like the fact that FPC comes pre-installed. It identifies itself
as
3.2.0 (2020/06/13) (fpc binary is 112808 bytes)
Whenever I try to compile a pascal program (simple "Hello
World" style)
the compiler stopps with an interal error message "Error:
1980-0-0 is
not a valid date specification".
My guess this is something between the OS (AROS/ApolloOS) and
FPC.
No, this is most likely the Vampire 4 or more specifically its
FPGA CPU
implementation ("Apollo core") being incompatible with a true
m68k. Are
you trying to use the SoftFPU or the hardware FPU version?
is there a way to get this information from the installed
binaries? As
FPC was pre-installed, I have no idea which version the Apollo
developer
used.
This matters,
because the TDateTime type maps to "Double" (64bit float) in the
run time
library, and the most problematic part of that CPU core is known
to be the
FPU, especially with higher precisions. The error you're getting
is
definitely coming from one of the TDateTime helper functions in
the
sysutils unit. (Search in rtl/objpas/sysutils/dati.inc.)
Can anyone give me a clue how to debug this issue?
It's entirely a speculation from my part, but if I can judge it
by my past
experiences trying to investigate issues reported by Vampire
users, I
doubt there's anything to debug in FPC in this regard.
If you're using the hardware FPU version, try using the SoftFPU
version
(which should be the default on m68k-amiga, actually).
I've downloaded 3.2.0a (SoftFPU) from the FreePascal website, and
that
version works fine. So it might be a HardFPU version.
I also see that the pre-installed version was installed with the
clock
in the system was set to the start of the Amiga Time
(1.1.1978). Might
that create a problem?
It would be good it we can find the issue and report back to the
Apollo
team, so that they can fix the pre-installed version.
Greetings
Carsten
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