Hello all (and especially Erik),
this is probably not the right list but, I'd like to start to port SDCC to other architecture. I chosen HC05 (especially its extension ST7).
I got the src/hc08 directory and started to change files. I have one question ( I am sure that other questions will arise soon). There is some XA register in the code. But HC08 does not have such. What is it good for ? Something like indexing of RAM ? Or stack pointer indexing ? I probably do not need it for HC05, do I ?
I got some reference doc - AN1218. There are differences described.