Re: Slow Doom on fast Retro PC
Posted on 2019-06-15, 18:38
case cloosed.
Re: Slow Doom on fast Retro PC
Posted on 2019-06-14, 19:54
vga card is ISA, tseng et4000ax, one of the fastest. But don't tell me ISA is the reason, because a 486dx2-66mhz with 8mb ram and et4000ax vga does better than 21fps. pentium 200 is triple the clock plus superscalar, ~5 times faster on raw cpu power. Now, accounting for same vga speed on both, my …
Slow Doom on fast Retro PC
Posted on 2019-06-14, 16:41
case closed.
mouse driver
Posted on 2019-04-28, 17:11
Why do we need to load mouse driver before we can use mouse in DOS ? (We don't need driver for video card or adlib sound card) By driver I mean something that is loaded before running game, either manually or in config.sys/autoexec.bat. Also, by driver I do not mean setting irq or dma things for a …
Re: My sound card related questions
Posted on 2019-04-22, 14:40
By driver I mean something that is loaded before running game, either manually or in config.sys/autoexec.bat. Also, by driver I do not mean setting irq or dma things for a device, that is just called setting. Example for a driver: mouse.com that must be loaded to be able to use mouse. Though I don't …
My sound card related questions
Posted on 2019-04-19, 21:49
I have been researching retro sound cards lately, the ones that were used in ms-dos games. I try to understand some specifics about them and hopefully someone(s) can help me. Hope for answers from fellows who uses/used these cards and knows for sure. Do original Adlib and SoundBlaster cards require …
what keyboard connector is this
Posted on 2019-04-02, 16:18
(Update: Go to 7th post on this page) Recently I got an IBM model M keyboard with a strange type of connector. I have a pentium1 computer and a spare 5-pin DiN connector. I want to use this keyboard on my pentium1 and want to modify and connect the model M keyboard using the spare 5-pin DiN. I can't …
Re: transfer files to old computer
Posted on 2019-03-20, 08:45
it's MS-DOS only. I was hoping for some very simple way to receive files over either LAN cable or serial rs232 port (I have usb to rs232). Maybe I could type some batch file to receive files, only need to know how. I'll have a look at some dos commands.
transfer files to old computer
Posted on 2019-03-16, 19:41
Hi, Is there a way to transfer files from modern computer to old 486 laptop, using either LAN/network cable OR serial port(I have usb-to-rs232 cable) ? (without requiring to add some software or drivers on 486 laptop, because I can't :), relying on ms-dos 5.0 only ) (486 has floppy drive, I know I …
Re: need to identify ram type
Posted on 2019-02-03, 18:10
Yes, it's my help request there 😀
Re: need to identify ram type
Posted on 2019-02-03, 11:01
The computer I need it for is a laptop from now defunc german company Tulip, model is Tulip nb 486sx. Has 4mb ram, upgradable to 8mb or 20mb by using this type of ram.
need to identify ram type
Posted on 2019-01-28, 18:51
Hi. Have a 486 laptop, works good. Want to upgrade ram from 4mb to higher something. Only way is to use this ram shown in attached picture. What type of ram is this and what type of connection port are those. Need to know so I can properly search for it on internet. Please pay attention to it's …
Re: pascal programs in dosbox
Posted on 2014-09-02, 11:05
Is there a faster way to copy scene from some 64kb memory to anther 64kb memory (from non-video memory to video memory). Currently I am copying word by word. And even If i program it to copy double word by double word, cpu itself still executes the command in word by word, so no difference. I made a …
Re: pascal programs in dosbox
Posted on 2014-08-28, 08:12
I read about DOSEMU in wikipedia. it is said the that DOSEMU can achieve almost native speed of dos. but it is for Linux only. Aren't there such good emulator for windows that you can suggest ?
Re: pascal programs in dosbox
Posted on 2014-08-27, 21:01
To be sure that it has nothing to do with my program I tested a very simple program. The program just adds two real numbers a 100 million times and then displays how many seconds have passed. I run it on dos it takes about 1 second. I run it on dosbox it takes about 100 seconds. the program pseudo- …
Re: pascal programs in dosbox
Posted on 2014-08-25, 16:32
By the way is it possible that DOSbox has problems with emulating 8087/80287 ? Because my program is using it. Could that be the source of slowlyness ?
Re: pascal programs in dosbox
Posted on 2014-08-25, 13:28
Also I was about something else as well, I just check out and found out that There actually about 102 pyramids and 102 cubes in my program. that makes about 1600 polygons being rendered all having different solid colors (but no texture or z-buffering yet). anyway, I'll work on it a little more and …
Re: pascal programs in dosbox
Posted on 2014-08-25, 13:14
If you change every pixel by writing immediately to the frame buffer your program won't run very fast in general. 3D games where the whole screen changes each frame first render to memory and then copy everything to the screen buffer. I suppose the difference will be more pronounced when using …
Re: pascal programs in dosbox
Posted on 2014-08-25, 07:12
Maybe blood and duke nukem are more optimized at writing graphics to the screen than your program is. Are you perharps doing some waits for retrace or something like that, which could cause a massive slowdown ? No, there's absolutely nothing that would slow down my program, no waits, not other …
Re: pascal programs in dosbox
Posted on 2014-08-25, 06:41
Hi. I tried this and it did not work, same slow speed. Perhaps your code needs more optimization or a nice rethink? If you're using Borland's graphics unit, I'm not entirely sure how fit it is for writing the fast paced graphics a game requires, perhaps looking into assembler (Turbo Assembler in …
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