I have a 1mb A600 here, I'm going to load up GAAE to a CF card and install it in the A600 and try to write some ADF's with TSGui (which is built into CWB) I also own EasyADF so can try that too.
CWB also has the CF drivers so really I think the solution for you might be to upgrade the Rom & mount a CF on the internal IDE. You can still use your PCMCIA for file tranfers but you might have to dismount it to be able to write the ADF's due to lack of Memory.
I'll let you know if I have enough Ram to complete the task and report back
Steve.