🚀 go-pugleaf

I am curently homebrewing a Z80A-based microcomputer and I'm tired of
hand-assembling the operaing system.  I could really use a Z80 Assembler.
I presume the best way to get one is to get a Z80 card.

Questions:

1. I have seen Z80 cards for as low as $29 mail-order.  Applied Engineering
   sells their 6.0 MhZ version for $140.  Is there a difference besides the
   speed?
2. How fast do normal Z80 cards go anyway?  2.5 MhZ or 1.0 MhZ?
3. What are the differences between different versions of CP/M?  I have
   heard of 1.6, 2.2, and higher versions.
4. Do all versions of CP/M run on all normal Z80 cards?
5. Are any cards slot-dependent?
6. How compatible is CP/M with the Videx 80 column cards?  More than 80
   column? (Like Videx Ultraterm, which I have.)
7. Is CP/M public domain or do you have to buy it from somewhere?
   Who makes it for the Apple.  Digital Research?
8. Can I transfer files from CP/M to DOS 3.3 and back?  I have in mind
   text files and binary files.  I need to take the output of the
   assembler and get into the Apple Monitor to write it on an EPROM.
9. Anyone know of a good Z80 Assembler and where to get it?  Public
   Domain?  It must support Z80 opcodes (not 8080) and all Z80 instructions.
   How do you create files for the assembler?  With WordStar or editor built
   into the assembler?

Thanks very much.  I hope some Apple aficianados out there can help me
out in my confusion.

	-Jonathan Dubman
	ucbvax!buddy!c9c-bi