pdewacht / oberon-risc-emu Goto Github PK

Just a reminder to review/copy schierlm's networking code when I have some time.

At least in 2019 image there is the following compiler error:

This won't compile, because it treats T.Text and Oberon.Log (of type Texts.Texts) as different types:

IMPORT T := Texts, Oberon;
VAR W: T.Writer;
BEGIN
  T.OpenWriter(W);
  T.WriteString(W, "HELLO");
  T.Append(Oberon.Log, W.buf)

If T := Texts is changed to just Texts and T replaced with Texts, then the compilation becomes successful.

In an online RISC emulator, it is not the case (both variants work).

Is it possible to alter the layout for the emulator? It seems that the emulator has a hardcoded layout. It seems to not only ignore the OS layout, but the hardware layout too. I have an ISO keyboard and it assumes ANSI. My OS layout is Dvorak also, which is similarly ignored.

How difficult would it be to alter this behaviour?

While packaging this project for nixpkgs (NixOS/nixpkgs#100042) I noticed that there is no LICENSE file. Is the Copyright section in the README indicate an unfree license?

https://github.com/pdewacht/oberon-risc-emu/blob/master/sdl-ps2.c#L46
case K_NUMLOCK_HACK: {
// This assumes Num Lock is always active
if (make) {
// fake shift press
out[i++] = 0xE0;
out[i++] = 0x12;
}
out[i++] = 0xE0;
if (!make) {
out[i++] = 0xF0;
}
out[i++] = info.code;
if (!make) {
// fake shift release
out[i++] = 0xE0;
out[i++] = 0xF0;
out[i++] = 0x12;
}
break;
}

http://mingw-w64.sourceforge.net/
Could you please check it out?

I did the following:

brew install sdl2
make
./risc Oberon-2016-08-02.dsk

I get an empty window:

https://i.imgur.com/hqBzTn5.png

I see some pixels at the bottom-left of the screen though.

On RaspPi (Raspbian) the RISC Emulator works only in fullscreen mode. It started directly in fullscreen mode and switching back to windows mode did not work (F11 or Cmd+Shirt+F). So in fullscreen mode it is helpful if the Emulator supports shutcuts for "quitting" or "resetting" the Emulator. Without this feature you have to reboot the RaspPi, when you want to stop the Oberon-System.

Switching to another Terminal (with Ctrl-Alt-F1) does not work.

Volkert

I used static analyzer provided by Clang/LLVM to build emulator. There are two complains about switches without default cases which could lead to usage of uninitialized variables. Probably not a real issues, since I guess those switches can't test against values other than those already specified. Bellow is a link to output from Clang:

http://blinkkin.piasta.pl/share/scanbuild/index.html