Thursday, November 5, 2015

This is => for instance <= a => high quality <= detective Amiga game :-)


There is many ways to play Amiga playable games - one ot the most interesting alongside games that are playable online are => http://aminet.net/package/misc/emu/DOSBox_AGA <= and you prob. already know it... Then you => of course <= have a bunch of games* to play => for instance <= 11th Hour developed by the company Trilobyte, Inc. that where pubs and released to the masses in the end of 1995 => with really high quality <= FIND A LINK? /..../ /..../ /..../ /..../ /..../ /..../ ...USEFUL TO YOUR AMIGA.



DOWNLOAD THE AGA VERSION  | LINK TO MOBYGAMES | 11TH HOUR


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*at least billions or to be honest => at a guess <= much more...


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DOSBox | An Open Source DOS emulator to run old DOS games

...uses the SDL-library which makes DOSBox very easy to port to different platforms. DOSBox has already been ported to many different platforms, such as Windows, BeOS, RiscOS, AmigaOS, MorphOS, AROS, Linux, MacOS X, Solaris, Unix... DOSBox also emulates CPU:286/386 realmode/protected mode, Directory FileSystem/XMS/EMS, Tandy/Hercules/CGA/EGA/VGA/VESA graphics, a SoundBlaster/Gravis Ultra Sound card for excellent sound compatibility with older games... You can "re-live" the good old days with the help of DOSBox, it can run plenty of the old classics.

SOURCE | LINKFAQ | Forum | sourceforge => News | Reviews | Support | The Free Libre Open Source license that DOSBox uses is the common GNU General Public License 2.0 (or GPLv2)

DOSBox emulates a full x86 intel PC with stereo sound and DOS. Its main use is to run old DOS *and hopefully when more developed more modern software released to MS Windows* games applications, utilities etc. on platforms which don't have DOS or sometimes Windows 95 (on Windows 10  / Windows 8 / Windows XP / Linux / FreeBSD / Mac OS X / AmigaOS / MorphOS / AROS / .... / .... / .... / .... /).

Running DOSBox on next generation Amiga

DOSBox is the emulation of a DOS PC. Using DOSBox it is possible to run DOS based games, applications and demos on your Amiga. It has been released on most operating systems including *all* the Amiga systems.

The AmigaOS4 port of DOSBox was released in 2011 and is available on os4depot.net. This port has some limitations that it can't install Windows 3.1, Gravis UltraSound support isn't working and has no CDROM support, but running DOS based stuff and using SoundBlaster 16 Soundcard emulation is fine for me - it is all I want it to do.

After downloading DOSBox and extracting somewhere, I copied the demos and games I had into the already conveniently created C:\ subfolder in the DOSBox program folder. When done the folders look like this:.

Some configuration changes are then needed to the dosbox.conf file to mount the C:\ from this folder to make games and demos run smoothly.

Below is the config settings I used in dosbox.conf for reference.
 


As you can see above, you can run DOSBox full screen but I see no point to this when the standard PC resolution is so low at 320x200 pixels. I keep it running in a window (fullscreen=false) and double the screen size using the normal2x option (which you can make bigger if you want to). Note that you can't have more than 31MB of RAM set, but this is more than enough for DOSBox. Next page of configuration in dosbox.conf is below.
 
CPU section above is critical for the performance.  core and cputype I set to auto, cycles to 10000. Any more than 10000 and you will start to notice problems with games and demos running due to CPU usage.

Please note: As an update to this blog entry I have found much better performance results setting cycles=max instead of 10000. I will not update all the screenshots but take my word for it that max value is better performance than 10000.

Mixer section - I set rate=22050 to reduce sound mixing overhead but probably I could have run this at 44100. blocksize=2048 and prebuffer=30 are important to prevent stuttering of audio.

The next section of the dosbox.conf file relates to Soundblaster and Gravis Ultrasound (GUS) sound configs.
 


Important here is the Sblaster section where we specify we want to emulate a soundblaster 16 (sbtype=sb16), the associated Base Address (sbbase), IRQ, DMA and HDMA values. Because we set the mixer rate as 22050 on the previous section we should set it like this for the Sblaster section as well. This stops the DOSBox emulator from upmixing or downmixing audio in real time to meet the frequency of the mixer, improving performance. GUS section is not relevant since it doesn't work on the AmigaOS4 port.

I should probably change the speaker section pcrate and tandyrate to 22050 to, but I don't have any games or demos that use the speaker (or PC Speaker), so I didn't configure this. If you run some games like World Class Leaderboard (for example) on DOSBox, it needs the PC Speaker and so you would need to change these settings as I just covered.

 Anyway, not much changed in the next page of dosbox.conf, but I include it for completeness.
 


The last page is below:
 

Important here is the DOS Section - enabling XMS (eXtended Memory Space), EMS (Expanded Memory Space) and UMB (Upper Memory Block). There are needed for DOS to see installed memory above 640k. Other important section is the Autoexec section - C drive mapping command is: mount C Work:Emulation/DosBox/C (I installed DosBox in Work:Emulation)

Please note from my testing - if you make changes to the C:\ subfolder folder or files while DOSBox is running, DOSBox can't see the changes. For example, you rename a file or create a new folder from AmigaOS4 in the C:\ subfolder DOSBox can't see it. You will need to close and open again to see the changes.

Also note that DOSBox is not a full implementation of DOS - just enough to run the softaew you want.

If you want the full MS-DOS or FreeDOS implementation in DOSBox, you need to set up a hardfile, make it bootable and have the OS floppy images ready to install or copy the files/folders across.

Please keep in mind that the Amiga port of DOSBox has differences to the Windows, Linux and Mac versions. Simply test and execute also Windows 95 *and perhaps XP if supported* if you can.
 
Ok, with the dosbox.conf file configuration done and using folder mode for the C Drive, now let's start up DOSBox.
 

You can use the normal dir and cd commands to change folders and list directories, same as in DOS.
 
Contrast by Oxygene ----demo----:
Stars by Noooon----demo----: 

Unreal by Future Crew----demo----:

Zweilight Zone by Capacala----demo----:
Thanks for all the info about DOSBox and how well it runs on the X1000.

Hmmm ... SAM 460 was shown running Win95, wonder why wouldnt X1000? There is at least one more x86 emulator. Hope when second core is enabled things will speed up.

Did you get ipx network up and running?

Replies
 
No, I didn't try this. I don't know any other local DOS gamers to play games with over ipx! I used to play DOS games over ipx back in the mid 1990's but that was about it...
 


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