Hi everyone: I'm just suffering a "retro computing nostalgic crisis" :) ( I need to jump outside of my daily job routine ) and I had bought some old books since I was a teeneger ( 2001 ) about DOS Programming , all related to INT 21h calls and DOS Programming. Years ago I made some small things with this book, just for consulting. I have a Pentium 3 from year 2002 but this does not works , this have some electrical components wrong , and do not power on ( next week I will bring the computer to a repair shop to try solve it ) , but , I have a old laptop from 2009 ( Hp Mini - 1 GB RAM ) with FreeDOS on it.
Before this short introduction, I would like to use FreeDOS , not MS DOS 6.22 , because FreeDOS looks like it is more powerful and we are a good community. So , the important question for me is : *I will install Borland Turbo C++ 3.0 on the laptop and I will be playing with the INT21 calls . Do all calls are working on freeDos like the original MSDOS ? . I mean , suppose I call the function of 47H of Int 21 ( get current path ) or other calls . Are all calls tested on FreeDOS and will it work ? I would like not to fight with the code , thinking I'm wrong but later it is a bug on FreeDOS. This is the point, I hope you understand my question.* Really I'm studying how to develop a Kernel ( I'm reading a book about this , it is a guide to writing the Kernel code on C and at the same time theory and explanations ) . This Kernel is a "baby MSDOS" but the books explain the basics. Create a Vector Table ... create customs calls ... So, that is why I decided to go on deep into MS DOS/FREEDOS ( maybe ... 30 years late ... somebody can create a travel time machine for me please? ) to compare and understand how MSDOS/freeDOS like help to my challenge to try do develop this small Kernel. Thank you to all. PD : If somebody is in my same situation and wants to play with FreeDOS and Turbo C, you can write to me. It is just to do it in my free time. *Gabriel González González*
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