OK the problem came from the _wait procedure. Replacing it by something simpler works perfectly : Copy code to clipboard 1 _wait: 2 mov cx, 10000 3 delay_loop: 4 loop delay_loop This is of course CPU frequency dependent, but it's not a problem for what I want.

I use the following settings : Copy code to clipboard 1 core=normal 2 cputype=auto 3 cycles=3000

I wrote the following code, which is supposed to output a 60 Hz square wave to the PC speaker : org 100h loop: in al, 61h or al, 00000010b ;turn pc speaker on out 61h, al call _wait in al, 61h and al, 11111101b ;turn pc speaker off out 61h, al call _wait jmp loop _wait: mov cx, 00h mov dx, 411ah ; …

You still need to perform some kind of action to get it on screen AFAIK In DOS mode 13h (320x200 256 colors) you don't need anything, as long as a byte is copied to 0xA0000 it will show up on the screen. How DOSBOX know there is something to blit ? Is there a routine called periodically (eg : 70 …

I ran the following program in DOSBox (it display a spinning 3D cube) I was surprised to see that FRAPS can report very precisely the number of FPS (probably because it hooks page_flip() or vsync() methods of DOSBox). Program source is available in the zip file and if you take a look at it, you will …

I have updated program. Its now possible to extract HMP files 😀. I have tested under foobar and it work great. I have made other modifications, exporting sounds as wav and animations frames is now possible. Do you know which game ride is "ride7.hmp" ? never heard it while playing.

Is it possible to extract HMI music with this tool? No it's currently not possible. I had a quick look and it's seems game store some files with a ".HMP" extension (is it what you are looking for?). Converting these files to MIDI (so you can listen to them directly from program) seems to be fairly …

Hi there, I have made a simple C# program that allow to view / extract resources of Theme Park dos game (1994 Bullfrog) Here is link to project : https://github.com/tigrouind/ThemeParkRessourceViewer It allow to view most sprites, animations, backgrounds and also sounds. Game internal files format …