Two months ago, after finding out that the RCA 1802 assembly never seemed to be ported to the mac, I decided to try creating one.
And so, ASMac18 was born. All done in Fantasm6 68k assembler, I tried to use traps as least as possible, since I don't really know both the system and rom well. This is officially the first "real" program I have made that targets the Macintosh (my older programs targeted 8-bits CPUs).
For now, the cross-assembler isn't high-level event aware, doesn't have any equates and can only assemble a single file at once. But, I won't say that equates are a big problem