Nibbling Around the Sound Blaster's Lunch - Digital Sound in DOS Games without a Sound Blaster

The Creative Labs Sound Blaster line of cards became the de facto DOS sound card standard in the early 1990s and carried through that dominance until the last DOS games.  The Sound Blaster offered many useful features in a single card, an FM synthesizer, a gameport, MIDI functionality but most uniquely a digital sound processor designed to process digital audio input and output with minimal CPU intervention.  Gamers saw the value in this "all-in-one" card and bought lots of Sound Blaster cards,  which required game developers to support the card and giving Creative a huge lead in the market.  Creative was naturally very protective of its technology, which was full of quirks and obscure hardware behaviors.  Eventually sound chips from other manufacturers like MediaVision, Crystal Semiconductor, Electronic Speech Systems and Yamaha were available which promised some level of direct Sound Blaster compatibility.  

Not everyone could use a Sound Blaster.  For some PC gamers, the cost of the cards was out of reach to them.  Systems with weird busses like Microchannel have few sound card options and those that are available are rare.  Laptops usually did not come with ISA expansion and PCMCIA sound cards are also rare.  Some systems just do not have enough slots for a sound card once more essential needs, like a hard drive, are added to the system.  In this case a parallel port sound solution may be your only option.  Finally there were people disgusted with Creative's monopolistic practices and refused to support the Sound Blaster ecosystem.  In this article we will give an overview of digital sound solutions which offered no hardware Sound Blaster compatibility.

Random Computer and Video Game Musings

Sometimes I have something to say but the topic is not worthy of a full blog post.  In this case I have gathered four topics which I believe are interesting but not necessarily related and put them into this consolidated blog post.  Enjoy!

The Portable Document Saving Companion - The Epson WorkForce ES-300W

Many institutions, government offices, courthouses, hospitals, still store their records as paper documents.  Making copies of those papers can get expensive, the copies may not be immediately available and the the available copier may not be very good. Paper copies require more paper, which means harvesting semi-renewable resources. Scanning documents can be fast, cheap and easier to handle compared to reams of paper. Scanners used to be anything but portable, but technology has improved to the extent that you can buy a portable scanner and expect it to make reasonable scans.  Almost three years ago I bought a portable scanner, the Epson ES-300W, so in today's blog article I will share my experiences with the scanner, identify its strengths and weaknesses and provide a review for it.

IBM PCjr. Compatibility & PC Software

The IBM PCjr. had many faults, one of which were the compromises IBM imposed on the machine to limit its PC compatibility.  By the time the PCjr. was released and in people's homes and offices, there was over two years of software developed with only the IBM PC and IBM PC/XT in mind.  For a too-brief period of time, PCjr. compatibility was an important focus, especially as some companies updated their software to become PCjr. compatibile.  Then once the PCjr. was discontinued, PCjr. compatibility pretty much fell by the waist-side not too long afterward.  In this article we will identify the issues which held the PCjr. back and what needs to be done to show that a piece of software is truly PCjr. compatible.

Nintendo Handheld Console AC Adapter and Battery Chargers Guide

One of Nintendo's greatest strengths with its handheld consoles were their battery life.  Nintendo did not necessarily pursue the most advanced technology that could be packed into a portable gaming device but balanced performance, features, screen type with their drain on the battery technology of the time.  In the beginning, its consoles ran on disposable batteries or via AC to DC adapters.  As time progress and battery charging technology became sufficiently compact, Nintendo started making consoles with batteries built into them.  But in today's blog article I will go over all the official ways Nintendo devised and products Nintendo sold to power its portable gaming consoles.

IBM Composite Artifact Color Games and Related Topics

Top - Direct Colors Old CGA & New CGA
Bottom - High Resolution Artifact Colors Old CGA & New CGA

Back in 2013 I gave an overview of composite color usage on the IBM PC platform.  I included a list of all games I knew about or could find which supported composite color graphics.  Now, 10 years later, new information has made that list less than inaccurate and less than fully inclusive.  Let's talk about these games and give a new, more accurate list.  I will also talk about other topics related to CGA and color in more detail below.  

The Saga of the Color Brown in the Early Years of the PC

top left: RGB monitor without intensity bit, bottom left: RGBI monitor without brown correction, top right: RGBI monitor with 33% brown reduction (IBM 5153), bottom right: RGBI monitor with 50% brown reduction (EGA/VGA/Tandy)

In 1980-81 IBM developed a graphics card for its new IBM PC called the Color/Graphics Adapter.  This card was designed to display 16 colors on a compatible CRT monitor via a 9-pin digital video port.  IBM defined the colors in its Technical Reference Manual using a 4-bit binary code.  The CGA could also display colors with a composite video connector on the card.  It is the evolution of the display of one of those colors, color 6, commonly but yet simplistically referred to as brown, that we are interested in today.

Tandy 1000 Gray and Peach Label Releases

When Tandy released its Tandy 1000 computer in November, 1984, it needed software to tell that would demonstrate the system's PC compatibility and its enhanced features.  Tandy had been both a software developer as well as publisher for its TRS-80 computers and its Color Computer, but those were computers that Tandy had brought into the world.  For the Tandy 1000, Tandy was entering into a market already established by IBM and already had a very large number of software developers publishing for that platform.  As the Tandy 1000 maintained a large degree of PCjr. compatibility and was essentially PC compatible, there was already a significant number of titles which could take advantage of the enhanced graphics and sound derived from the PCjr.  Companies like Sierra On-line and Spinnaker Software had invested heavily in PCjr. software and were eager to find additional avenues to sell their games, even more so once IBM announced it was discontinuing the PCjr. in March, 1985.  Tandy was happy to make publishing deals if they released Tandy 1000 specific versions of their games.  Let's look at those versions.