Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!lll-winken!uunet!mcvax!unido!cosmo!fifi@cosmo.UUCP
From: fifi@cosmo.UUCP (A.F.Zinser)
Newsgroups: comp.os.cpm
Subject: Re: New Processor Rumours
Keywords: full compatible ?
Message-ID: <3111@cosmo.UUCP>
Date: 9 Apr 89 07:24:53 GMT
Sender: fifi@cosmo.UUCP
Reply-To: fifi@cosmo.UUCP (A.F.Zinser)
Organization: CosmoNet, D-3000 Hannover 1, FRG
Lines: 23

In article <> I2040401@DBSTU1.BITNET (Ulf Gruene) writes:
>   - It is fully software compatible with the Z80.
That's right, if you only use the official Z80-instruction-set,
but who does. If you use the SLIA (shift left inverted arithmetic)
as I do, you get into a conflict, because this instruction-
sequence means TSET (Z280). And this difference is even mentioned
by Zilog in it's own Z280 Technical Manual (see Appendix A)!
>
>Z800 some years ago. It is not the same as the Z180 (= HD64180)
>which has only a few new instructions.
Unfortunately the instruction-sets of Z180 and Z280 are so much
different, that you can't use a Z180-assembler to create Z280-
opcode...

Does anybody on the net know about a Z280-assembler (or a
pre-assembler to use an existing Z80-assembler)?

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