Peter's site blog

Advertisment IBM Portable PC and two other early portable PCs 
Monday, August 22, 2016, 06:25 PM
Posted by Administrator
These advertisments in the eighties were not very plausibly, but not only IBM published PC Ads in that manner. That man couldn't really look onto the screen and was able to read anything. See and judge for yourself:

But it was IBM's necessary answer to the Compaq Portable PC, a bit late, yes.
And it's a beauty meanwhile. Other portables looked more ugly.

Corona Data Systems and also Sperry Corporation (in fact, it was the same computer with different labels) selled early portable PCs. This is a picture of the "Sperry Portable Computer", which is meanwhile a real rare Portable PC (still looking for an affordable one):

It was selled from late 1984 until Sperry Corporation was merged with Burroughs in 1986.
It doesn't have an amber screen (like the IBM Portable PC), instead, a green one with 9 inch size. An Intel 8088 with the same speed like the first IBM PC and 256KB RAM (expandable to 512KB on motherboard) was included.

See also in related link for an article in "Infoworld", November 1984.
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BASIC game classics... today: CAMEL (slightly improved version of the original David H. Ahl source) 
Sunday, July 31, 2016, 08:15 PM
Posted by Administrator
Do you remember the times games only shows text messages ?

David H. Ahl was the editor of two real famous books: "BASIC COMPUTER GAMES" and "MORE BASIC COMPUTER GAMES" in 1979, published from "Workman publishing, New York".
One of these games I remembered was "CAMEL". It just shows up a few text messages and you can enter a small range of numbers as a command what to do next (after the game started).
Of course the whole program flow was controlled by the random generator, you will NOT often win.
But it was fun to beat the computer... at least if you would reach the 200 miles limit.
The game source was slightly improved, e.g. displaying the status was decreasing life points (so I changed this, it will not decrease life points anymore and I added a help display).
I didn't changed the original program logic, so it's still not easy !

This is how it looks (game is just started):

You can get the BASIC SOURCE CODE if you click on "related link".

Good luck while playing the game.
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Evolution of vintage PC chess programs (until VGA was used) PART 4 
Saturday, July 2, 2016, 07:15 PM
Posted by Administrator
GNU Chess appeared earlier than 1990, but the only DOS version I've found was 3.0 and 3.1 (from 1989 and 1990), and version 3.1 offered a slightly polished textmode board...

If you're curious about the (compiled) DOS version, see "related link" below.
Btw. look at D2 or G1 - GnuChess 3.1 does not "repair" the traces of your movements (so it's programmed faulty in the display section).

A really beautiful chess display is offered in 1990 by Colossus X.
Looks a bit ugly in CGA...

But classes better in EGA:

Chessmaster 2100 can use EGA and looks in 1991 much better than every other chess game.

In the same year (1991), Fritz 1 was published, really a STRONG chess partner already !

This shows the EGA display. It runs surprisingly also in graphics mode on Hercules cards.

In the year 1993, Fritz 2 was published, now it has already reached an ELO number, I have to resign always ! Can be used with a VGA display, like the predecessor too.

It runs surprisingly in graphics mode on Hercules cards, too.

All following MS-DOS chess games which were published after 1993 can only be used with a VGA or SVGA card. So if you own a vintage PC with just a CGA, Hercules or EGA card, don't look for newer chess software.

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Evolution of vintage PC chess programs (until VGA was used) PART 3 
Saturday, July 2, 2016, 07:00 PM
Posted by Administrator
Available for many, many platforms, it should not miss in such a list: ChessMaster 2000:

Many (higher) version follows, this one appeared in 1986. Here CGA display was used. ChessMaster 2000 can be run also in graphics mode with Hercules cards (but looks ugly).

EDCHESS was an ugly, but playable alternative in 1988 (v1.0, v2 appeared in 1992):

Going on with Power Chess in 1989, graphics did NOT evolved:

This program is really SLOW. Just for completeness listed, not because it's good.

In 1989, the PC version of BattleChess arrived, very popular, unfortunately not really strong playing... but who cares while looking fights like the queen against a knight ;-)

In 1990, Chessplayer 2150 was published. Acceptable EGA graphics:

Continued in PART 4...
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Evolution of vintage PC chess programs (until VGA was used) PART 2 
Saturday, July 2, 2016, 05:30 PM
Posted by Administrator
1983 was the year Chess Partner was created.

Although the graphics was a bit like the VCS 2600 games, it uses color, but it's definitely not the best one at the time it was published.

Then in 1984, Chess 88 arrives, and it plays well (and still on the first IBM PCs).

Also in 1984, MyChess was available - looks great even in 2D (pieces were represented in a pseudo 3D look). Still no need for EGA or even VGA:

And very famous, Sargon III enters the scene in 1984, finally, for the PC too.

Cyrus looks *very* nice in (EGA) 3D mode, although it was not really strong. Created in 1985:

"related link" leads to an entry of a chess program wiki about MS-DOS versions.

Continued in PART 3.
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