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Re: Dosbox security hole in programs.cpp

Posted on 2004-10-25, 00:39

However, if a malicious program knew the host location of a portion of emulated memory, it could write its own code to the location, and then call the program callback with the known location, causing the emulator to run the supplied code as a native program. This isn't an exploit at all, since an …

Re: Mapping MT-32 to GM in DOSBox?

Posted on 2004-10-11, 20:48

I would code a mapper into DosBox, but it only adds one or two games to the "sounds right list". The vast majority of games that used the MT-32 made use of its dynamic instrument capabilities. As such, the mapper thing just doesn't work very well. Its the reason why I wrote my emulator to begin with …

Re: DOSBox + MT-32 = WIN!!!

Posted on 2004-10-09, 03:00

Sweet! Not to be pushy, assuming, or anything more than slightly annoying in a strangely lovable way.. but, will this be a DosBox v0.62 with just MT-32 emulation added? Or, will it be like the 0.61 one where you had all the other test code in there (which unfortunately broke a few things making it …

Re: Using COM ports with DOSBOX

Posted on 2004-10-08, 20:10

Unhandled INT 14 call 3 That's some old software you've got there. Those are part of the BIOS's old serial routines. I implemented the port passthrough, but not the old BIOS hooks at INT 14. In short, to get this app to work more coding will have to be done with the serial passthrough. I'll see …

Re: CMS Emulation Removed in DOSBox 0.62

Posted on 2004-10-06, 17:44

The MT-32 had 32 channels (of LA synthesis = best synthesis quality) Wow... I write the emulator for it myself and still get a historical fact horribly wrong. The MT-32 did not have 32 channels. It had 9 channels (8 melody, 1 percussion) but each of those 9 channels could have different notes of …

Re: CMS Emulation Removed in DOSBox 0.62

Posted on 2004-10-06, 02:54

Just some interesting trivia about sound hardware: For a while, there was a competition among sound hardware companies in comparision of "ports" or channels of audio. The Adlib had 11 or 9 channels (of FM synthesis = average quality) The Game Blaster had 12 channels (of square wave synthesis = poor …

Re: CMS Emulation Removed in DOSBox 0.62

Posted on 2004-10-05, 21:30

. By this logic, there's no reason to ever worry about CMS being enabled at 220h. However, with my flawed logic, something is probably amiss. Please let me know :) This is about the only thing your correct on, unfortunately. The DAC didn't really use 0x220, it used ranges 0x224 to 0x22f. The DAC is …

Re: CMS Emulation Removed in DOSBox 0.62

Posted on 2004-10-05, 04:17

Still, it makes more sense to treat CMS as a separate device from FM synthesis because it WAS a separate device! It actually a little more complicated than that. First there was the CMS, which was standalone, and then the SB1.0, which had the FM chips, the DAC and the CMS. Then SB1.5 and SB2.0 left …

Re: Unable to determine disk geometry

Posted on 2004-10-03, 17:05

Normally when you generate the disk images the application will tell you the Cylinder, Head and Sector specifications. I'm not quite sure how QEMU figures out the CHS automatically, but I'll look into their code and see if I can't borrow their code so QEMU images will be loadable.

Re: 0.6.2's ipxnet's portS

Posted on 2004-10-03, 16:49

Why sending and receiving on different ports? My firewall will prevent any connection unless I write some more rules. Because its not possible to listen on and send on the same port unless that connection is coming from the listener. In the case of the IPX server, it has to loopback. And unless …

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