cpldcpu
What's the issue with newer SDCC? IS there an upstream bug report?
The README mentions "Use SDCC 4.1.0 to build. Later versions create broken code". What is the problem here? Is there a corresponding ticket in the SDCC bug tracker?
It's the same issue that I brought up in the free-pdk examples. I haven't been able to pinpoint the error back then.
The one that turned out to be a mov vs. mov.io issue: https://github.com/free-pdk/free-pdk-examples/issues/13 ?
Yeah, the compatibility-breaking change seems to have been one regarding IO instructions.
My old UART routines compiled without error, but resulted in nonfunctional code. Very annoying and difficult to debug. I solved it by reverting to an older version of SDCC. I may need to find some time to figure out how to make it compatible to the newer SDCC versions.
Then the solution should be easy: in all the I/O that you do via inline asm, change the instructions used to mov.io, set0.io, etc. My recommendation: except for the few places where inline asm really provides an advantage, just use C.
Just unrelated topic on this side: Any plans to migrate SDCC to git or even github? Would simplify submission of error reports significantly. Nowadays, I (and many others) have very little cross section to SVN and sourceforge and having to work with an unfamiliar system adds significant friction.
AFAIK, there are no plans for a migration. But it looks like we'll get an official git mirror of the svn repo.
Please check if the free-pdk examples work for you now. If yes, you can port the fixes there to here.