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Re: DOSBox-X branch

Posted on 2020-04-18, 23:19

I have a question about I/O port C0h (the SN76496) on Tandy systems, based on an interesting bug fix related to Prince of Persia in DOSBox-X recently with machine=tandy. I/O port C0h (the SN76496) is 8 bits wide, correct? Prince of Persia appears to have code that writes the volume registers with 8- …

Re: DOSBox-X branch

Posted on 2020-04-16, 18:41

Running loadfix defender.com shows "Sorry, the DOS memory required by the game is not free. 64kb freed," Then I tried loadfix -10 defender.com, it runs but proceeds with the black screen. What about loadfix -15, loadfix -20, loadfix -25, etc...? Tried loadfix -5 to -45, all proceed to a blacksreen …

Re: DOSBox-X branch

Posted on 2020-04-16, 17:59

@TheGreatCodeholio: Wow! Disabling the accurate mode fixed the muffled/distorted sound. Tandy still doesn't work though :( Still just the black screen... But thank you on the tip, at least the EGA/CGA now works good, just gotta figure out how to make Tandy work :) @_Rob: If you don't mind me asking …

Re: DOSBox-X branch

Posted on 2020-04-16, 17:31

Thanks for the help, unfortunately, here are the results: 1. If I try to play using Tandy, it boots and just hangs on a blackscreen 2. When I use the EGA version, it runs but with the muffled/distorted dos-ish music/sound I am attaching my conf settings for your reference... note that I'm using the …

Re: DOSBox-X branch

Posted on 2020-04-16, 15:46

I have the latest development build, but for this test I purposely used the last released version of DOSBox-X (0.83.0). And I only set machine=tandy. My config is simply [dosbox] machine=tandy [autoexec] boot Defender_of_the_Crown.img What happens if you use core=normal and a fixed cycle count? …

Re: DOSBox-X branch

Posted on 2020-04-16, 02:10

Looking at mobygames, there seem to be 3 PC versions. - Original CGA only version for DOS - re-released CGA/EGA version for DOS (not sure if this supports Tandy) - PC Booter version with CGA/EGA and Tandy. I have the PC Booter version, and when I start it in DOSBox-X with the default machine type, …

Re: DOSBox-X branch

Posted on 2020-04-15, 17:35

Hi, I just registered and am not sure if this is the right thread to post this question... Has anyone tried playing Defender of the Crown? All of the versions I tried have garbled sound/music when playing but works fine when I used normal dosbox. I even followed the conf file of the regular dosbox …

Re: DOSBox-X branch

Posted on 2019-12-09, 07:22

Found a bug in INT 10h AX=101Ah that was fixed for a game. The function in DOSBox behind it reads the Attribute Controller in a way that leaves the screen blank. You'd never notice in DOSBox SVN because SVN does not correctly emulate the display blanking caused by attribute controller programming ( …

Re: DOSBox-X branch

Posted on 2019-10-16, 16:10

Great! No hurries, I can wait for the next official release. Clearly if you can compile the source code from the release section, you can also git clone from the project page as well. The latest commit to master has the latest fixes and improvements. git clone https://github.com/joncampbell123/ …

Re: DOSBox-X branch

Posted on 2019-10-16, 16:00

Hi, window title says "dosbox-x 0.82.22" so I'm pretty sure it's the latest version. Anyway I've downloaded again https://github.com/joncampbell123/dosbox-x/archive/dosbox-x-v0.82.22.tar.gz and I've compiled it from a clean directory and problem remains. I just realized that the byte dosbox-x …

Re: DOSBox-X branch

Posted on 2019-10-16, 15:10

Hi, I think I come across some bug in the dosbox-x debugger. I want to write CF opcode (IRET instruction) in some memory address, so I put in the debugger window: SM xxxx:yyyy CF However, the byte in memory address xxxx:yyyy changes to 00 instead of CF No problem with other opcodes so far. I'm …

Re: DOSBox-X branch

Posted on 2019-10-02, 01:24

Hi there new here with a quick question .. i usually use dosbox on my crt monitor and it switches resolutions correctly ie 70hz dos mode was playing with dosbox-x but i cant seem to get it to play ball with my crt all i can get is 60hz scaled and it looks terrible on a crt i have tried every …

Re: Illegal Unhandled Interrupt Called 6

Posted on 2019-09-15, 16:17

I just updated to 0.82.22. I compiled it myself on 64bit fedora 30, as no RPM was available this time around. The situation has changed a bit. Now when I start it the following happens. On the first boot: I get the win98se boot splash screen and then suddenly on the console I see a continuous …

Re: DOSBox-X branch

Posted on 2019-09-10, 07:43

Also on shutdown of Win98SE, it just hangs on the shutdown splash screen and in the log I see a continuous stream of these errors: LOG: 1367968862 ERROR CPU:Illegal Unhandled Interrupt Called 6 Are you attempting to use dynamic core? Dynamic core does not work with preemptive multitasking OSes like …

Re: DOSBox-X branch

Posted on 2019-09-06, 16:51

Since you added proper MDA and MCGA, there was also Plantronics, and there is even a game now that supports it. http://www.the8bitguy.com/4032/where-is-planet-x3/ I had an ATI videocard back in the 80's that had a Plantronics mode. Other then that there was also the IBM 8514, a successor to VGA. I …

Re: Dosbox reset without close

Posted on 2019-09-03, 06:06

DOSBox-X has a good example on how to do this. There's already code to exit DOSBox SVN if throwing an int(0), DOSBox-X throws an int(3) to break out of emulation and emulate a reset. This might be a good starting point: https://github.com/joncampbell123/dosbox-x/blob/master/src/hardware/memory.cpp# …

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