Greg Will Embedded Pascal open /dev/ files ?
Miguel Enviado do meu iPhone > Em 11 de mar. de 2022, à(s) 21:51, Gregory Nutt <spudan...@gmail.com> > escreveu: > > Now that I am not longer on the critical path for NuttX support, I am much > less involved in the RTOS. I thought, perhaps, people might be interested > in what I have been up to. > > I have spent the last 6 months or so working on that Pascal compiler that I > used to use with NuttX a few years ago. This is just fun stuff; I don't > think it has has any applicability to businesses at all. > > I have basically done these things: > > - I have upgraded the language definition to state of most current desktop > Pascal compilers (FreePascal, Lazarus, GNU Pascal) but avoiding the trend > to make it object-oriented Pascal. Pascal with classes, exceptions, etc. > doesn't feel right to me. > > - I have ported the toolchain and P-Code VM to run on NuttX again. The > toolchain is rather large, but not so large that you could not use it on > some MCUs with more resources. For more resource constrained platforms, > the VM alone is pretty small and perfectly usable. > > - I have a VM start-up C task that can boot the OS into Pascal (for > example, the Pascal shell). > > - There is the beginning of a Pascal shell that supports a few commands. > In particular, it supports running multiple Pascal threads (by spawning > multiple copies of the VM). > > - Currently it runs on Linux and NuttX. But I would like to get the VM > running on near-bare metal too. > > - I would like to see the compiler work JIT so that I could send Pascal > source to the target and it just runs. > > - And lots of other fun ideas. > > You can see the code here: https://github.com/patacongo/Pascal and there > is a WIP document with some history and language specifics here: > https://github.com/patacongo/Pascal/blob/main/doc/PascalNotes.md > > The code is pretty stable but still not too difficult to produce compile > errors, although those are getting rarer and rarer. > > Greg
