Search found 12 matches

by roboman
Sun May 20, 2012 7:12 pm
Forum: Your Announcements
Topic: Hello again
Replies: 1
Views: 31712

Hello again

Some times life gets in the way, been gone for a while. I wasn't that active. I guess a lot of people have had life get in the way. This is a great site. I'm actually some what involved in the DexOS project. Ver 6 was just released. It's not much like your project, it's all as...
by roboman
Sat Jun 11, 2011 7:08 pm
Forum: Beginning OS Development
Topic: What is the font called?
Replies: 1
Views: 6947

Re: What is the font called?

Unless you change the pointer register, it's what ever the video card maker decided to burn to the video bios.
by roboman
Sun May 29, 2011 6:03 pm
Forum: Beginning OS Development
Topic: Problems/Virtual PC
Replies: 6
Views: 17596

Re: Problems/Virtual PC

Does it work on real hardware outside an emulator?

If it works in several emulators and on hardware, then you have found one of the bugs or places where emulation under Virtual PC isn't 100%
by roboman
Sun May 01, 2011 3:20 pm
Forum: Beginning OS Development
Topic: OS Beginners FAQ
Replies: 1
Views: 5251

Re: OS Beginners FAQ

:?: How long does it take to make an OS? :idea: ... In 1981 Microsoft bought the rights and source code to qdos and has been adding functionality to it ever since. There are points in development when enough has been added that the ver number gets bumped up a bit or there has been enough of a rewri...
by roboman
Sat Apr 23, 2011 6:47 pm
Forum: Software Engineering
Topic: Software
Replies: 7
Views: 28763

Re: Software

The OS is mostly some ver of Windows or Dos, but sometimes one of the hobby os's Lots of text editors, sometimes notepad, qedit / tse would top the list FASM sometimes with Fresh or RadASM GFA basic for right now, but mostly Power basic or QBasic. A little Visual Basic. HxD idag Borland Delphi and C...
by roboman
Mon Mar 14, 2011 7:51 am
Forum: Graphics Programming
Topic: 2d & 3d programming
Replies: 2
Views: 18131

Re: 2d & 3d programming

that you are likely programming on the xbox :) you need the external api because nearly every graphics card made for the pc is different from every other card.
by roboman
Mon Mar 14, 2011 7:37 am
Forum: Assembly Language
Topic: doubt on int 10(0e) & reading sector
Replies: 4
Views: 16350

Re: doubt on int 10(0e) & reading sector

The page number, in most cases your graphics card has more memory then is needed to display the screen of info in the mode you selected. That extra memory gets used as pages, or a number of hidden screens. The two big things pages get used for is 1) early programs that had several screens of informa...
by roboman
Sun Feb 15, 2009 6:13 pm
Forum: Beginning OS Development
Topic: Operating system fails?
Replies: 11
Views: 18804

Can't help you on the first part. The second part, it's most often called a putpixel function. It's mostly a matter of finding the base of the video memory and then ( X * BitsPerPixel )+( Y * BitsPerPixel * PixelsPerLine)+ BaseOfVideoMemory A google search of 'putpixel asm' will get you lots of exam...
by roboman
Fri Dec 12, 2008 5:06 pm
Forum: Beginning OS Development
Topic: Simple Kernel
Replies: 7
Views: 14531 does basicly what the first person requested. Andyhhp: >My suggestion is that you plan exactly what you want your kernel to do Was wondering what your design goals are and what specs you were sho...
by roboman
Sun Dec 07, 2008 10:19 am
Forum: Beginning OS Development
Topic: using all 4 CPU cores....
Replies: 6
Views: 12338

Games, CAD, CAM, 3d Animation, Engineering apps and a few other things go a lot faster. Besides people like the fastest new gizmo....
by roboman
Sat Nov 29, 2008 4:02 am
Forum: Lounge
Topic: Introduction
Replies: 15
Views: 43620


Guess this is the place for an intro. Programming is just an off and on hobby. Landed here looking for some cd bootloader info (found answer else where). Mostly of late I've been playing around and attempting to write some add on stuff for DexOS. I really enjoyed your OS tut's. 46 years old, mostly ...
by roboman
Fri Nov 28, 2008 10:21 pm
Forum: Beginning OS Development
Topic: Writing my own OS
Replies: 20
Views: 32951


There is also a nice boot loader at:
that will load a com or exe and start it. The code is even reasonably clear.