zardoz89 / dcpu_vm

Another DCPU-16 Virtual Machine

Hey! 👋

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✨ I'm a Full-Stack Developer working in Madrid, Spain. I mainly work with Java for backend, and JavaScript (and HTML&CSS/SCSS) for frontend. Sometimes I do other stuff for fun in C, Dlang and other languages.

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dcpu_vm's Issues

Lem 1803 emulation mode not working on win32

Only the Border color is printed
I already have this bug before, it was a memory allocation bug, i will try ro refix it

Mackpar Floppy drive

I did some little test to the implementation of the Floppy drive, and looks that works. I need to improve the test program of it.

Also, I try to use Pixelator with it. It formats, save and load correctly. Something like drawing, going to Disk option, formatting, installing PUS and saving works. Plus If you go back to Draw, and change the image, and then go to Disk option, and try to load the file, it works, restoring the saved image from disk.
But when I reset the machine, or simply exit and load again dcpu-vm, when I "install" PUS filesystem in Pixelator, it erases his own data from the floppy (but not erases the whole disk). I think that is a bug on pixelator, but I'm not very sure about it. Plus it gives a error when I try to save a image (but It saves it!). It's formats, install PUS filesystem correctly, and loads correctly. There is a problem saving, that gets a error at middle of the process, only writing half of the file.

Also, I examined the disk image file with a hex editor, and is the Pixelator data correctly saved.

So the TODO list about the floppy is :

• Improve the dumb test floppy program. Actually only writes "Cleaning" in screen, and fills the whole floppy with some data that are the last words of the program data. Should to fills the disk with some pattern to test the writing and say "Disk filled" when it finish. Now read it and check that the pattern it's correct and say it when it finish.
• Implement the Bad Sector bitmap
• Add pertinent options in main.cpp to load a arbitrary floppy image.

Wrong refresh rendering

Yep, cause : the updatescreen function is not called by tick but by main loop.
Proposition : Monitor have their own sf::Image as member (no need allocation) updateScreen must be an internal function that only update the sf::Image and getScreen function return the sf::Image ptr.

Generic Clock slower that should be

Actually generic clock lags behind the real word clock. Loses ~2 seconds for every minute.

comment bug

In the assembler, the ';' are not parse properly

Reorganization of code

I'm going to structure a bit better like this:

/cmake         <--- Cmake modules
/assets        <--- Image files and similar stuff
/src           <--- Here all .c , .cpp  and .inc files
/src/devices   <--- Here all hardware devices
/src/audio     <--- Here will be placed all code that handles audio 
/include       <--- Here all .h and .hpp files. Mimics /src/... structure
/include/devices
/include/audio

Devices loadout

We need a way to select the devices load-out in a more powerful way.
DevKit uses a XML (we can use TinyXML-2 lib for this) to select the load-out and build a multi-file assembly project.
A example : https://github.com/S0lll0s/HowDoIOS/blob/master/DevKit/HowDoIOS-DevKit.10csln

If the load-out is missing or isn't using these "project file", we can use a default hardware load-out modifiable with the same parameters that actually we have.

Clock is launching too interrupts

The generci clock is launching too many interrupts. Makes that the DCPU-16 catch fire.

Emulator too fast !

The emulator speed is too fast whatever the emulation mode i use (by time or by frame)
I can see it with the clock.bin program : the second are half of real second.
I don't know if it's my config or other...

dcpu_vm does not compile : a lot of files in SFML folder are missing

For example "Graphics.hpp" does not exist.

The F12 key problem

If i have well understand, the F12 key cause an issue with your terminal shortcuts...
Can we move the key used to another (FXX) to avoid the "System key" that open the start menu on windows...
I put F12 randomly. We can use every anothers keys,

Strange end of line bug

In the assemebler i have no idea when it comes from

Strange behaviur. Keyboard never recibes SET_MSG command

This code :
https://code.google.com/p/ctoagnos/source/browse/trunk
(compiled) http://pastebin.com/Wdbygtu7

The code works in DevKit and sets keyboard to launch interrupts when a key is pressed, but running it in dcpu-vm, it never hapens.

Segmentation error with lem_splash.bin on win32

Whatever the monitor i use. lem_splash always crash

[Compatibility] Allow Monitor to take care of their own texture

In ADDITION of providing sf:Image, i think we can add a sf::Texture to avoid texture.loadFromImage or If in the futur we need it.

• The AbstractMonitor should have a use_texture flags that enable this.
• The monitor should only recreate the texture only while it necessary (switch emulation/videos modes)
• The monitor should update the texture using texture.update(screen) once by render (at the end)

Somes other ideas

• Replace sf::Image* with sf::Image& (because the sf::Image is no more dynamically allocated)
• Replace sf::Image* with uint8_t* pointer better compatibility and speed (no slow setPixel function but need to rewrite cgm render)

I wait for discussions...

Key events handling

For what I researched, SFML can't handle some key events, like ! " | @ (Alt gr+number or Shift + number). It isn't a bug, they simple ignored these cases and return a "Unknow key" (-1) value. I send a Issue but looks that is pretty old (first issue two years ago!).

I think that We have this options.

• Add these codes in SFML code and send a pull request (I can try to do for Windows & Linux, but Mac code it's very different)
• Bypass SFML and use native code (Similar problem for Mac)
• Switch to SDL 2 that have a more logical way to handle key events and can grab key codes and scan codes at same time.

What do you think that should try ?