Search \ VOGONS

Re: Watcom C/C++ how to copy image buffer to CGA video memory buffer correctly ?

Posted on Yesterday, 08:25

I remember always being confused about whether the least significant bit is the left-most pixel of the 8-pixel run or the right-most one. Apparently it’s the latter…

Re: stop killing games review

Posted on 2024-04-15, 12:08

by Ringding

in Milliways

Maybe merge with this thread: Online copies of games are not owned

Re: x86 effect of the D/B bit in data segments on instructions?

Posted on 2024-03-08, 14:34

by Ringding

in PC Emulation

If I read chapter 17.1 in the original 386INTEL.TXT documentation correctly, the target segment's bit does not matter, it’s the one in CS that does. The data segment’s bit seems to matter only for expand-down and stack segments.

Re: Visual C++ v1.52 (1994) - Code View MS-DOS debugger

Posted on 2024-02-23, 20:14

by Ringding

in Marvin \ Software

serialShinobi wrote on 2024-02-23, 18:42: I am wondering what sort of debugging is this called. Are all C/C++ debuggers for the PC like this old 1994 Codeview? Do they all depend on an executable? How does it know what your *.c source code file was? It’s recorded in the debug info attached to the …

Re: How to troubleshoot a Windows 98 BSoD?

Posted on 2024-01-17, 23:47

by Ringding

in Marvin \ Software

Although if I had to guess, the physical addresses would probably be 0004A217 and 00063BF5

Re: How to troubleshoot a Windows 98 BSoD?

Posted on 2024-01-17, 23:45

by Ringding

in Marvin \ Software

It’s a segment (selector) : offset pair, which, by adding the segment descriptor’s base, which is probably 0, to the offset, can be converted into a linear address. You will probably need a good debugger to look at the actual instructions in memory.

Re: NE2000 patch referenced "missing" file?

Posted on 2024-01-16, 14:34

by Ringding

in DOSBox Development

DaveDDS wrote on 2024-01-15, 18:20: Ha - looks like I missed it! - thanks! (where do you actually get it)? It’s part of the DirectX SDK, which I’d expect to be included in every release of Visual Studio since at least 1998.

Re: NE2000 patch referenced "missing" file?

Posted on 2024-01-13, 17:48

by Ringding

in DOSBox Development

Then you did not follow the blog because it specifically mentions that you need to add it.

Re: NE2000 patch referenced "missing" file?

Posted on 2024-01-13, 12:01

by Ringding

in DOSBox Development

It’s called dxguid.lib

Re: Cant get more Base memory free Dos 6.22

Posted on 2023-12-29, 14:33

by Ringding

in Marvin \ Software

Somehow your BIOS seems to steal 5KB (conventional is only 635K instead of 640K). Otherwise it is as good as it gets. I use ndos as a COMMAND.COM replacement (which is Norton’s version of 4DOS), which buys me another 3KB, but really anything beyond 610K is not worth fiddling.

Re: MartyPC

Posted on 2023-12-03, 07:48

by Ringding

in PC Emulation

Wow, this is the best book digitization result I’ve ever seen!

Re: NE2000 patch referenced "missing" file?

Posted on 2023-11-27, 09:10

by Ringding

in DOSBox Development

You can just edit the file name in the patch (.in -> .ac). It still applies cleanly.

Re: Windows for Workgroups TCP/IP Disk

Posted on 2023-11-05, 22:55

by Ringding

in Marvin \ Software

AFAICT, it has always been a free download. It is called "tcp32b.exe".

Re: 40+ years of source code

Posted on 2023-10-29, 08:53

by Ringding

in DOS

I had a look at your compilers and related tooling a few weeks ago and was quite impressed by it because it is very simple and concise, yet powerful.

Re: Effect of PPP MRU/MTU on received packets for a client?

Posted on 2023-09-15, 08:18

by Ringding

in PC Emulation

TBH, I never thought sending IPX over PPP was even possible. I am still not sure this is the case ;) I would assume that fragmentation is part of IP forwarding, whoever does that. When forwarding a packet that is too large for the target network’s MTU, it gets split up and the fragments will be fed …