Z180 can't set context flag assume8bitIOSpace

[depili]

Describe the bug This seems similar to #2488

Trying to set the context variable that controls the IO space addressing on Z180 project fails with:

Context register change conflicts with one or more instructions
---------------------------------------------------
Build Date: 2020-Dec-29 1701 EST
Ghidra Version: 9.2.2
Java Home: /Library/Java/JavaVirtualMachines/adoptopenjdk-15.jdk/Contents/Home
JVM Version: AdoptOpenJDK 15
OS: Mac OS X 10.15.7 x86_64
Workstation: localhost

To Reproduce Steps to reproduce the behavior:

1. Open a Z180 program in ghidra
2. Open the set register values dialog
3. Select "assume8bitIOSpace" or "contextReg" as the register
4. Set it to value 1
5. Get the error above

Expected behavior Expected the context register to get set and decompilation to clear up

Environment (please complete the following information):

• OS: macOS 10.15.7 x86
• Java Version: 15
• Ghidra Version: 9.2.2
• Ghidra Origin: official from ghidra-sre.org

[depili]

github had a hickup, and this is a duplicate of #2834 closing