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From: nengle@copper.ucs.indiana.edu (nathan engle)
Newsgroups: alt.msdos.programmer,comp.os.msdos.programmer,comp.lang.c
Subject: Re: MSC 5.1 Question
Message-ID: <1991Jan29.212821.20387@bronze.ucs.indiana.edu>
Date: 29 Jan 91 21:28:21 GMT
References: <91026.223149ACPS2924@Ryerson.Ca>
Sender: news@bronze.ucs.indiana.edu (USENET News System)
Organization: Indiana University, Bloomington
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In article <91026.223149ACPS2924@Ryerson.Ca> ACPS2924@Ryerson.Ca writes:
>Is it possible in MSC 5.1 to gain access to the registers directly.
>Turbo C has the _AX,_BX... pseudo-variables for them
>is this possible in MSC and if so HOW???
>
>
>Peter
>ACPS2924@ryerson.ca

  Not directly from 5.1. Whenever I needed to get at my registers in 5.1
I would drop into assembler. There's a neat little microcontroller from
NEC called the V25 which is code compatible with the V20, and which WILL
allow you to access register contents directly. The '25 actually has 8
sets of registers which can be addressed either normally as registers or
they can also be mapped as memory locations (so you would find the
contents of a register by reading a memory location - SLOW but it
works).

  Direct access to the registers is much simpler in MSC6.0 using the
inline assembler. I don't think that there are C constructs for
referring to the registers, but I had never seen that as a problem. 
Direct access to registers just means more reserved words and more rope 
to hang yourself with (as if C programmers needed any more). What
exactly are you trying to accomplish?

Nathan Engle             Software Evangelist
Indiana University       Dept of Psychology
nengle@copper.ucs.indiana.edu