DOS veterans may remember messing with expanded and extended memory to get memory above 640K. Here’s what you need to know about expanded vs extended memory, or EMS vs XMS. They are two different approaches to solving the same problem.
Old IDE hard drives are slow and unreliable, due to their age. What if I could tell you there’s a cheap, readily available substitute that’s both solid state and faster? There is. Let’s talk about using compact flash as a hard drive.
The IBM PS/1, sometimes called the IBM PS1, was a line of 1990s personal computer systems, not to be confused with the Sony Playstation video game console that’s also often called the PS1. The PS/1 was IBM’s second attempt at a mass market consumer PC.
You can neatly divide the PS/1 into two generations. While they ran the same software, they had major philosophical differences. Perhaps more than any other computer line, they represent IBM’s change of heart in the early 1990s as it tried to survive in an extremely competitive and crowded market.
The IBM PS/2 line was a fairly radical departure from the older IBM PC line. This was deliberate, as IBM wanted to disrupt the clone industry, which it saw as a threat to its business. Here’s a look back at the IBM PS/2 vs PC, the line it replaced.
IBM succeeded with the PC because it created an ecosystem, not just a PC. IBM’s misstep was creating an open architecture and then trying to close it back up after the fact with the PS/2. In IBM’s defense, it’s not clear whether they knew this at the time. If nothing else, in the case of the IBM PS/2 vs PC, IBM created a classic case study of open architecture vs closed.
The Compaq Deskpro 386, announced in September 1986, was a landmark IBM PC compatible computer. The first fully 32-bit PC based on the Intel 386, its release took the leadership of the PC ecosystem away from IBM, and Compaq became the leader.
Compaq was no upstart by 1986. Its Compaq Portable was a runaway success earlier in the decade, and Compaq was a darling of the industry. The Deskpro 386 solidified Compaq’s position as an industry innovator.
The IBM PS/2 line, released in April 1987, was IBM’s attempt to reinvigorate its aging personal computer line and fight off cloning. Although the line sold fairly well, it failed to hold off cloning and IBM never regained the market dominance it enjoyed in the first half of the decade.
Let’s take a look back at the history, trials and tribulations of the IBM PS/2.
The ultimate DOS gaming PC is a topic that I’ve seen come up in forums frequently, and that I’ve been asked directly a number of times. I guess since I published advice on running DOS games on Windows PCs on two continents, people figured I knew something about that. I guess I fooled them!
The trouble is that no single PC can really be the “ultimate” DOS game machine. Well, not if your goal is to be able to optimally run everything from early 1980s titles designed for the original IBM PC up to the last DOS version of Quake. I learned that the hard way in 1995 or 1996, even before Quake existed. Read more
A rather hastily written and sloppily edited piece showed up on Slashdot yesterday morning that caught my attention, because it was about the Amiga 2000. The Amiga 2000 is a dear machine to me; in 1991, our family upgraded to one from a Commodore 128. I still have both machines, and there isn’t much that I know today that I didn’t first experience on one of those two machines.
Although I think the piece was little more than a used computer store’s effort to unload some hard-to-move inventory, I do agree with the premise. For a machine that had a tremendous impact on the world as we know it today, the A2000 is criminally unknown. Read more
Today I slipped over to Laclede Computer Trading Company for the first time in many years. I was in search of an ISA parallel card. They’re not easy to find these days, mostly because they aren’t particularly useful to most people these days, but I figured if anyone would have one, it would be them.
No dice. But man, what memories.
Laclede has been around forever–at least 20 years, and probably a whole lot longer than that. I remember taking spare 286 and 386 stuff there in the early 1990s and they actually gave me money for it. Math coprocessors, Packard Bell power supplies, other oddball stuff like that. I’d salvage stuff from upgrade projects and get a little extra money that way.
Most of the stuff in the store now is Pentium 4-level. Recent enough to be useful, old enough to be really cheap. There wasn’t a single ISA board in sight. It was a little sad, but honestly, Clinton was probably still president the last time someone came in looking for something like that. No point in keeping that kind of stuff around.
I lingered around a while though. I saw lots of old SGI and Sun workstations. I remember in 1995, when I was taking a C programming class in college, we used to have to get on waiting lists to use one of the limited number of SGI workstations. They compiled code instantly, and unless you did something incredibly stupid, you weren’t going to crash them. They were a lot nicer than the NeXT workstations we usually ended up having to use when we got tired of waiting in line.
Those systems cost more than a decent car in those days. Each. And now, depending on configuration, you can get one for $30, $60, or $80. Incredible. They’re a lot more useful than the Pentium 75 I had back then, but PCs eventually overtook those weird and wonderful and odd proprietary Unix architectures.
I left, wistfully, but as I got in the car, I spied something. I wasn’t sure that distinctive shape sitting on a distant shelf was what I thought it was, but what else could it be? So I went back in. The clerk gave me a knowing look.
Yep, it was what I thought it was. There, on a tall shelf, on top. 1977 called. They want their computer back.
There it was. The Commodore PET 2001. The early one, with the built-in cassette recorder and the calculator-style chiclet keypad that was even worse than the IBM PCjr.
I’m pretty sure it wasn’t for sale. I didn’t ask, because I couldn’t afford it, and don’t have room for it. I stood there for a minute, studying it, then looked around some more. They also had a TI-99/4A, a contender from the early 1980s that couldn’t compete with Commodore, but some of its technology ended up in the Colecovision and, if I’m not mistaken, the IBM PCjr and Tandy 1000. It wasn’t a bad system, but it was horrendously overpriced. It cost more than a Commodore 64 but its capabilities were somewhere between a C-64 and a cheap VIC-20.
They also had a Commodore PC-10-III, which was one of Commodore’s PC/XT clones. And, next to the PC-10, there was a Radio Shack TRS-80 Model 1, the other forgotten personal computer from 1977.
Neat stuff. I don’t really have the interest to collect these old machines myself, but I’ll stop to admire someone else’s every chance I get.