To: opendos AT delorie DOT com
Date: Mon, 17 Jul 2000 21:02:12 5
Subject: Re: Hi !
Message-ID: <20000717.210241.-4008903.1.editor@juno.com>
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From: Bruce Morgen <editor AT juno DOT com>
Reply-To: opendos AT delorie DOT com



On Mon, 17 Jul 2000 20:35:55 +0100 (BST) John Elliott
<jce AT seasip DOT demon DOT co DOT uk> writes:
> : > CP/M-86 was based on CP/M 
> : > 3, and DOS Plus/DR DOS on CP/M 4).
> 
>   Actually, CP/M-86 1.2 is much closer to CP/M 2.  
> Personal CP/M-86 2.0 is the equivalent of CP/M 3, though its BDOS is 
> version 4.

Makes sense considering 
the relevant timeframes.
> 
> : I've never heard of "CP/M 4," 
> : and I was intimately involved in 
> : the 8-bit CP/M world throughout 
> : the '80s.  What did I miss?
>  
>   There never was an 8-bit CP/M 4. 

Yup, that's what I 
remember -- nice to know 
I didn't go senile and 
missed something like 
that!  :-)

> There are two 16-bit OSes 
> (Personal CP/M-86 and DOSPlus) which both return a BDOS version 
> number of 4.x.
> 
Gotcha, thanks!
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