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Tag Archives: IBM
Putting the things together, part 2: MIDI and other problems
Remember a few months ago, when I explained my approach to playing VGM files? Well, VGM files are remarkably similar to Standard MIDI files. In a way, MIDI files are also just time-stamped captures of data sent to a sound … Continue reading
Posted in Oldskool/retro programming
Tagged 8088, chiptune, demoscene, IBM, James Pearce, lo-tech, lo-tech.co.uk, MS-DOS, oldskool, PCjr, PSG, retroprogramming, Skate or Die, SN76489, sound, Tandy
6 Comments
More PC(jr) incompatibilities!
The race for PC-compatibility Since the mid-80s, there have been many clones of the original IBM PC. IBM themselves also made new-and-improved versions of the PC, aiming for backward-compatibility. DOS itself was more or less a clone of CP/M, and … Continue reading
Posted in Oldskool/retro programming
Tagged 8259A, CP/M, Creative Music System, DOS, Game Blaster, IBM, IBM Music Feature Card, IMFC, lo-tech, oldskool, PC-Compatibility, PC-Compatible, PCjr, PIC, reenigne, retro, SN76489, SN76496, Tandy, veovis
8 Comments
Putting the things together
So, over time I have discussed various isolated things related to 8088-based PCs. Specifically: Using the latched property of the 8253 programmable interval timer to be able to adjust the interval without any jitter/skew, so you can use it as … Continue reading
Posted in Oldskool/retro programming
Tagged 8088, chiptune, demoscene, IBM, James Pearce, lo-tech, lo-tech.co.uk, MS-DOS, oldskool, PCjr, PSG, retroprogramming, Skate or Die, SN76489, sound, Tandy
4 Comments
Commander Keen 4: now in 16-colour composite CGA!
Perhaps you have already heard it through the grapevine, but just to be sure, I’d like to mention that VileR (of 8088 MPH fame)has patched the Keen 4 code and redid all the graphics to make the most of the … Continue reading
Posted in Oldskool/retro programming, Software development
Tagged CGA, Commander Keen, IBM, oldskool
1 Comment
8088 MPH: The polygons
The last effect in 8088 MPH to be discussed is the polygon renderer. As already mentioned earlier, it is not a regular polygon renderer, but actually a ‘delta-renderer’: it does not rasterize pixels directly, but for each scanline, it uses … Continue reading
Posted in Oldskool/retro programming, Software development
Tagged 5150, 5160, 8088, 8088 mph, ASM, assembly, CGA, dither, flatshade, IBM, IBM PC, IBM PC/XT, Intel, lambert, optimize, polygon, rasterize, span buffer, video memory
3 Comments
8088 MPH: Sprites? Where we’re going, we don’t need… sprites!
I would like to give some technical background information on the sprite part in 8088 MPH, but before I do that, I want to discuss the music and the musicians, as they did not seem to have gotten very much … Continue reading
Posted in Oldskool/retro programming, Software development
Tagged 8088, 8088 mph, Amiga, assembly, bobs, CGA, IBM, MS-DOS, PC, Sprites
7 Comments
Just keeping it real at Revision 2015
The demo I have made together with Trixter, reenigne, VileR, coda, virt and Phoenix has won the oldskool compo at Revision 2015: I will discuss some of it in more detail at a later time. Trixter has already done a … Continue reading
Posted in Oldskool/retro programming, Software development
Tagged 8088, 8088 mph, CGA, IBM, oldskool, retro, retroprogramming, Revision, Revision 2015
7 Comments
