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Path: utzoo!mnetor!seismo!rutgers!sri-unix!hplabs!sdcrdcf!trwrb!orion!heins
From: heins@orion.UUCP (Michael Heins)
Newsgroups: comp.sources.d
Subject: Re: Z80 -> 8080 converter
Message-ID: <49@orion.UUCP>
Date: Sun, 18-Jan-87 15:00:14 EST
Article-I.D.: orion.49
Posted: Sun Jan 18 15:00:14 1987
Date-Received: Tue, 20-Jan-87 19:42:13 EST
References: <249@rocksanne.UUCP> <175@herman.UUCP>
Reply-To: heins@orion.UUCP (Michael Heins)
Organization: TRW Digital Developement Lab, Manhatten Beach, CA
Lines: 24
Keywords: Z80 8080 converter

In article <175@herman.UUCP> det@herman.UUCP (Derek Terveer) writes:
>In article <249@rocksanne.UUCP>, stein@rocksanne.UUCP (Adam Stein) writes:
>> I am look for a Z80 to 8080 program converter.  My C compiler only comes with
>> an 8080 assembler.  This is for a TRS-80 Model 4.  I don't care what language
>> it's written in.  I would appreciate any help on this.
>
>I believe that z80 has a mere two instructions that 8080 doesn't have.
>Therefore, most likely, your z80 program will run unchanged with the 8080
>assembler (I hope i'm right in this).  (As long as the z80 code doesn't use
>those two instructions that is)

You are thinking of the 8085, not the Z80.  The Z80 has a dozen or so more
instructions than the 8080, and in addition, has nearly twice as many
registers (af, bc, de, and hl are duplicated and bank-switched).  The z80
ISA is a proper superset of the 8080 instructions -- with one exception.  The
z80 uses the parity flag in double duty (parity/overflow).  In practice, this
exception has rarely proved to be a problem.  Normally therefore, programs
compiled/assembled for the 8080 will run fine on the z80, but not the other
way around.

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