Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

MS-DOS & Extended Memory Access

Posted on 1998-08-24
2
Medium Priority
?
336 Views
Last Modified: 2010-04-15
I am writing dos programs in C using Borland 4.x.  Where can I find a library that will let me access data beyond the 640K barrier (commercial lib is OK)?  I would like a lib that is aware of the newer versions of DOS such as 6.x and newer CPUS (386, 486) (i.e., I don't care about the old 286 days of EMS wars, etc.)
0
Comment
Question by:staggart
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
2 Comments
 
LVL 8

Accepted Solution

by:
Answers2000 earned 300 total points
ID: 1252283
http://www.pharlap.com/ - click "DOS Extender on their site at left hand side"

This is the quote
(begin quote)
TNT Realtime DOS-Extender™; lets you build multimegabyte realtime 32-bit DOS applications. If you need more memory for your DOS-based realtime applications, TNT Realtime DOS-Extender will handle your programming needs. TNT Realtime DOS-Extender gives you soft realtime performance, the power of protected-mode programming, and the ability to create programs with a memory access range of 4 gigabytes. And you'll be able to use your familiar 32-bit C/C++ compiler from Microsoft, Borland and Watcom to build your application — so there's nothing new to learn!

Need even more memory for your Extended-DOS application? 386|VMM, Phar Lap's virtual memory manager, enables your 32-bit Extended-DOS programs to access more memory than is physically available.

286|DOS-Extender allows you to access memory beyond the 640K limit of DOS by running your application in the 16-bit protected mode of the 80286, 386, or i486 microprocessor. With 286|DOS-Extender, your application can directly access up to 16 megabytes of memory. 286|DOS-Extender does not alter DOS, but functions as a layer between DOS and your application: to DOS, your application looks like a real-mode program, while to your program, DOS looks like a protected-mode operating system.
(end quote)


0
 
LVL 8

Expert Comment

by:Answers2000
ID: 1252284
BTW I used this (old version) back in the late 80s but I've forgotten everything about it by now, and it's probably changed beyond recognition since then, so unfortunately I can't give you any tips.
0

Featured Post

VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

An Outlet in Cocoa is a persistent reference to a GUI control; it connects a property (a variable) to a control.  For example, it is common to create an Outlet for the text field GUI control and change the text that appears in this field via that Ou…
Preface I don't like visual development tools that are supposed to write a program for me. Even if it is Xcode and I can use Interface Builder. Yes, it is a perfect tool and has helped me a lot, mainly, in the beginning, when my programs were small…
The goal of this video is to provide viewers with basic examples to understand and use pointers in the C programming language.
The goal of this video is to provide viewers with basic examples to understand recursion in the C programming language.

604 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question