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Re: "The Horde" CD, anyone has it?

Posted on 2008-03-07, 09:21

in PC Emulation
I had similar problems with two CDs -- OEM release of Monkey Island and Betrayal at Krondor. In both cases the very end of the data track was unreadable but it was past all files. Both disks also have multiple audio tracks and there were no problems with reading audio. Neither of these games had any …

Re: Multiple SVGA Chipset patch

Posted on 2008-01-29, 10:18

That's a good question. If C_VGARAM_CHECKED is enabled that line is totally unnecessary. Before it was just a poor man's way to imitate memory wrapping. The reason it worked before was that you always had 2MB of VRAM, even for vgaonly. Possible solutions: 1) change CHECKED2 to CHECKED4 to force …

Re: Multiple SVGA Chipset patch

Posted on 2008-01-29, 09:24

Is C_VGARAM_CHECKED on in your build? In previous versions of the patch it was on by default. Now it is off but some checks are always enabled. If this demo is considered important enough the check should be changed from CHECKED2 to CHECKED4 in that handler (all instances in the handler, not just …

Re: USB to ISA

Posted on 2008-01-18, 11:22

in PC Emulation
Not many other peripheral classes actually need all that bandwidth, especially in consumer market. There are a few higher-end RAID adapters that actually utilize x16 slot. I use PCI-E USB and FW400 adapters in my system but mostly to free up PCI ports. If you look around you can find PCI-E lan cards …

Re: USB to ISA

Posted on 2008-01-16, 06:17

in PC Emulation
A little update. I've contacted ArsTech and got some interesting information from them. They already have a customized version of DOSBox working with their hardware. It's not public yet but they are going to release it really soon. It should not require SDK, and they already have working Windows and …

Re: Multiple SVGA Chipset patch

Posted on 2008-01-13, 05:26

I'll see what I can do. The blending broke when partial updates went in, I just need some time to figure out how to do it properly. I would rather have it available for everything but it is not a super-important feature. The way it was used in Crystal Caves was nice, though. So, back to SVGA patch …

Re: Multiple SVGA Chipset patch

Posted on 2008-01-12, 09:21

Don't know yet. I don't need to spend that much time on maintenance anymore so it's quite likely I will start adding new features. There are a few features still missing in the patch, namely dual banks on Paradise cards, zoom on ET3000, and quite mysterious VRAM size handling on ET3000. I may …

Re: USB to ISA

Posted on 2008-01-11, 19:23

in PC Emulation
One millisecond latency is USB1.1. USB2 requires latency of ~100microseconds, very close to IEEE1394. Of course, that's only in theory -- depending on driver quality it can be much worse. The latency value is given for host controller. Connecting any hubs add to it and most modern motherboards have …

Re: USB to ISA

Posted on 2008-01-11, 07:25

in PC Emulation
That's the point, it is not gameport to USB adapter. It works on the lower level -- you still have exactly the same gameport adapter, it's just controlled through different bus. Latency may or may not be an issue. I have a big pile of other sound and video cards. Occasionally I use some of them to …

Re: Multiple SVGA Chipset patch

Posted on 2008-01-11, 00:45

Of course. Actually, if you use any of these: "vga_s3", "svga_s3", or "vga" DOSBox will default to S3. The other value is "svgaonly" that disables all SVGA functionality. Those settings existed in CVS for some time already.

Re: USB to ISA

Posted on 2008-01-10, 18:46

in PC Emulation
Gameport devices are among the simplest so if this thing works with anything it will work with joystick card. Many of those had just a single port and required polling. I suspect Thrustmaster cards actually used IRQ as well but that is still covered by USB2ISA feature list. Well, if you read that …

USB to ISA

Posted on 2008-01-10, 07:20

in PC Emulation
I was wondering if anybody here had experience with this adapter: http://www.arstech.com/item--usb2isa.html Like many VOGONS members, I have some old ISA hardware that I still want to be able to use from time to time. The only way to do it is to keep "legacy" system around. If this adapter actually …

Re: Multiple SVGA Chipset patch

Posted on 2008-01-10, 06:41

Important status update. The outlined plan is complete and, big thanks to wd, the essential portion of the patch is already in CVS. Pretty much the only part of the patch that is still not in is the dynamic VRAM allocation and boundary checks. I will update the patch on SF shortly. The remainder is …

Re: Working Game (not on list)

Posted on 2008-01-09, 21:50

Just a side note. There is a known crash bug in Mission Critical (IIRC, playing certain elevator video), that one is not DOSBox-related. When that happens, restore to the last saved game and press Escape as soon as that video starts playing to skip it. There is a patch in existence (included in some …

Re: Searching for help fixing corrupted files/bad disks of my classic games.

Posted on 2007-12-28, 06:59

in DOS
It's not just a checksum, it's quite a lot more. PAR2 uses Reed-Solomon error correction codes ( http://en.wikipedia.org/wiki/Reed-Solomon ) in addition to simpler CRC. The way it works, you can create smaller set of files, let's say, 10% of the size of your files. Now, if you have both your files …

Re: Searching for help fixing corrupted files/bad disks of my classic games.

Posted on 2007-12-28, 06:21

in DOS
The thing is, a lot of these games have different versions. Correct, but nobody says that there should be only one set of checksums per game. It should definitely be per version. Some people actually care about differences between versions -- just look at Infocom or Sierra collectors. Heck, I can …

Re: Searching for help fixing corrupted files/bad disks of my classic games.

Posted on 2007-12-28, 04:03

in DOS
I've been thinking about this for some time. There is a way to help people with problems like this without posting files (which would be illegal). In most cases, the file damage is very local. Does anybody see any problems with posting 10% PAR2 checksums? That should be enough to fix even the worst …

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