I'm using a very old version of Turbo Pascal and it uses the turboh.com to compile.
What is special about this *.com (as far as I can tell) is that it will compile on a very old computer we have but we are unable to emulate it correctly.
We have tried DOSBOX and Virtual PC 2007* with Windows 95. The Virtual PC 2007 with W95 is as close as we can get to the OS of the old computer that compiles.
The only error that we receive is:
"CO PROCESSOR CARD NOT RESPONDING".
I've tried to google for this error and resolution to no success.
As far as how I'm trying to compile with Turbo Pascal, we're using a version that allows you to compile to a .com and control the starting and ending memory address. I've tried different versions of Turbo Pascal and none of them seem to have that option. If I use a newer version it has a syntax error.
I'm not hugely experienced in Turbo Pascal so rewriting the program isn't an option at this time. Mainly, we're just trying to find legacy emulation support that will prevent this error. The old computer in question is an i486.
Thanks for any and all help.
IIRC you need to turn off a switch in the IDE to avoid generating specific asm instructions for the numeric coprocessor that was optional on older PCs e.g. 80387. Take a look in the menus and you should be able to turn it off. I don't remember exactly where since it has been a while since I touched a turbo pascal compiler (like 2 decades).