muta...@gmail.com  wrote:   
   > On Thursday, December 8, 2022 at 5:29:05 AM UTC+8, Joe Monk wrote:   
   >   
   > > Hercules is an architecture emulator, not a hardware emulator.   
   > > The way hercules behaves and the way the real hardware   
   > > behaves can be two different things.   
   >   
   > So? If it works, what's the issue?   
   >   
   > > Example: Hercules cannot IPL any OS that requires CZAM,   
   > > because hercules cannot currently do CZAM.   
   >   
   > So? The problem in question was whether z/PDOS could   
   > run on real hardware. If it only runs under z/VM on real   
   > hardware, and that can't even be tested because I don't   
   > have access to real z/VM on real hardware, who cares?   
   >   
   > It can be demonstrated working on Hercules, and Hercules   
   > is what is needed because of the exact problem above.   
   >   
   > > > because   
   > > > I do CCWs to terminals that are unlikely to exist on bare   
   > > > metal.   
   >   
   > > On z/ARCH, you dont run on bare metal. You always run LPAR.   
   >   
   > Ok, you can replace it with whatever wording differentiates   
   > being run on non-z/VM and running under z/VM, and neither   
   > of them actually being proven because of the difficulty of   
   > accessing mainframe hardware.   
   >   
   > BTW, I'm not sure if this conversation triggered it, but I   
   > realized that circumstances have changed, and I now   
   > have the ability to create a 32-bit EFI 386 executable,   
   > and I'm curious about 64-bit EFI x64 executable, to   
   > create the start of a BIOS, so I'm going to reinstall   
   > Zorin on my Chromebook so that hopefully I get a 64-bit   
   > gcc back, and then I'm going to see what it does with my   
   > gcc and binutils, which both mention x64 despite their age.   
      
   For your use gcc-3.2.3 is probably good enough (IIRC for some   
   time it was system compiler of some 64-bit Linux distributions).   
   But it was one of first versions supporting x86_64 and there   
   were considerable fixes and improvements in 3.3 and 3.4.   
   I have 3.4.6 on my machine and it works well.  I think it   
   would make sense for you to move to 3.4.6.  4.0 introduce   
   large changes and in general as you move towards current   
   versions gcc gets bigger and needs more memory, so you   
   may decide that this is too much for you.   
      
   --   
                                 Waldek Hebisch   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)