Date   : Tue, 18 Jun 1985 15:51:24 GMT
From   : Chuck McManis <cem%intelca.uucp@BRL.ARPA>
Subject: Re: a shell for cpm2.2

> I am thinking of writing a shell for my Ampro Little Board. It is running
> CPM 2.2. I like to include redirection, type ahead, command history and the
> commands: copy file, rename file, dir, stat and type.  The users will be used
> as directories. The shell must handle wildcards, so all existing programs
> can be used with it. Implementation of the commands is not to difficult, my
> major concern is implementation of the redirection, type ahead and command
> history.

No Problem! Actually the Ampro board uses ZCPR3 so all of the hard work has 
been done already. You should probably get a copy of the documentation from
either a local bbs or Z-node central (415) 489-9005. Specifically look 
at the sections on named directories and IOP's. The IOP will provide the
redirection capability. As for type ahead, I believe it is a switch you 
can set with the BIOS either way you will need a copy of the BIOS source.
That is available from Ampro or one of their dealers. Finally, look into
the sh command, (which is part of the complete ZCPR3 package) for 
lots of neat things like shell variables and things like that.

P.S. Source code is available for all of the above, with the exception of
the Ampro BIOS it can be had for free.

--Chuck
-- 
"Unix, the Teco of Operating Systems."      - - - D I S C L A I M E R - - - 
{ihnp4,fortune}!dual\                     All opinions expressed herein are my
        {qantel,idi}-> !intelca!cem       own and not those of my employer, my
 {ucbvax,hao}!hplabs/                     friends, or my avocado plant. :-}