Hang on M1 Macs using MMIO display

[mgaudet]

We've got a demo of using the Keyboard and Display MMIO simulator here, but it's revealing some issues with RARS + M1 Macs

If I load that displayDemo.asm into rars, open the MMIO tool then run it RARS hangs if being run on an M1 Mac.

This seems to work fine on Linux and on Windows; (I've also tested linux-on-arm on the M1 mac and it seems to work there).

We've tried a few different JVMs; the specific one I'm using right now is Eclipse Temurin, installed via brew install temurin

openjdk version "19.0.1" 2022-10-18
OpenJDK Runtime Environment Temurin-19.0.1+10 (build 19.0.1+10)
OpenJDK 64-Bit Server VM Temurin-19.0.1+10 (build 19.0.1+10, mixed mode)

---

Oh, and this is using a variety of rars builds :)

[jplanck]

I observed this as well. Stepping into the first line of the program before running normally makes it more stable for me. Often setting the run speed to 30instr/sec or slower helps as well.

[jplanck]

I believe this is fixed with the merge request from javalosr2004:master