I can't test your demo, since I have no sGUI installed. By the way, here is a demo: #include "openb3d.bi" #include once "GL/gl.bi" Common Shared glBindBuffer As Sub(ByVal target As GLenum, ByVal buffer As GLuint) screencontrol 150,1 screen 18, 32, , &h10002 glBindBuffer = Scr...

The link on Google Drive doesn't work, is there any other place to download it?

Hard to tell where is the issue without a code example. By the way, with OpenB3D you must use manual sync mode. Also, try removing the RenderWorld command and using only the Flip command to see if the 2d screen appears, in that case

Nicely done! Actually, to texture a cube sphere, you would need 6 different textures, one for each face, or you can "pack" them into a single texture, in a cube map (either a cross-shaped picture, or a "strip" made of 6 square textures). If you use separate textures, you can then...

Usually, to store a tile map in memory there are two possible solutions: a matrix (that is basically a standard 2d array) that is fast, and simple, but for large tilemaps require a huge amount of memory, or a quad tree. https://en.wikipedia.org/wiki/Quadtree A quad tree can surely be implemented in ...

There is no easy way to convert a C program into FreeBasic automatically, but a source written in C can be compiled to object code using GCC and linked as module into a FreeBasic program

If there were a standard way to control ambient light from a program (through a specific system API, for example), from FreeBasic the best way to do it would be to use the third parameter of the COLOR instruction (in original GWBASIC, and on MSX BASIC, it was supposed to control the border color, or...

There was some discussion of TSRs and FB on the forum last year sometime. You might use search to pull up that discussion. I'm pretty sure that FBC under DOS, and the executables it creates are 32-bit extended-mode programs, so they can't run on 16-bit chips like the 80286 or the 8086. Also I don't...

I guess FreeBasic would have to be enhanced with some commands to be able to manipulate the underlying computer hardware. This almost sounds like a pseudo OS, but who wants to go that route? I guess maybe I would. There is no need for commands to manipulate the hardware: most of these "pseudo ...

String concatenation changes the amount of memory occupied by a string variable, and this may require a reallocation. Reallocations are managed by the operating system, so there is no way to make them more efficient. The only way to speed up things is to reduce the number of reallocations, by preall...

In theory, the runtime library could be modified to run even in those conditions: it would be necessary to add memory handling (allocations/deallocations), and a rudimentary file system management, at least (basically, the rt library would become what is called a library OS) In that way, it would be...

jj2007 wrote:(and I doubt that FreeBasic can run on a machine that has not yet booted...)

It actually can: https://wiki.osdev.org/FreeBASIC https://wiki.osdev.org/FreeBasic_Bare_Bones

But it would be almost unusable, since the runtime libraries would not work.

A command like PAINT was supposed to work either in B/W or in a 16 color mode (it was used on BASIC dialects supposed to work on home computers like the MSX, or on PC with a CGA, or at best an EGA). Under Quick Basic it was much less useful in 256 color mode, since it was unable to recognize a borde...

caseih wrote:Ever played with Geoworks Ensemble? Amazing environment/mini OS that ran on top of MS-DOS in 16-bit real-mode.

Yes, it is now under Apache License, free and open source: https://github.com/bluewaysw/

I rather say minimalistic than lowlevel. And working through a firmware (BIOS), rather than managing the chips themselves is also not exactly lowlevel. The other OS in the same category (abstraction is done more by firmware than OS) are the older versions of Classic MacOS (say before 6/7 after whic...