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by Kev Beardsworth...

Get The Speed For Free

To the Atari user NVDI requires no introduction. It first appeared some years ago in Germany as a pure screen accelerant. Due to its legendary speed and compatibility with the vast majority of Atari software it soon swept away all competitors. It was bought into this country by System Solutions and is now regarded as an essential piece of software for Atari users world wide. Its creators, the Behne brothers, have continued to evolve NVDI and it currently stands at version 4.

NVDI 4 arrives in typical System Solutions style. Two 3.5 inch DD disks with a 32 page manual in an A5 plastic wallet. The first thing that strikes you about the package is the manual, "Atari ST/TT/Falcon 030/Mac", it proudly boasts. Mac? A clue perhaps to which area of computing NVDI 4 now covers. A Mac running MagicMac (required if you want to use NVDI 4 on a Mac) is already many times faster then a Falcon running MagiC 4, even if that Falcon's been fitted with the latest accelerator card. Surely NVDI 4 isn't going to make the Mac appear that much faster, and you're right it isn't. Making an Atari look faster by speeding up its screen display is no longer NVDI's main function. That function still exists, and is still performed with expert skill and reliability, however its font scaling or SpeedoGDOS functions now surpass its previously primary job of acceleration. This is the main reason for including Mac as a choice when it comes to system requirements. It allows the Mac under MagicMac to access Speedo's font scaler thus making MagicMac even more Atari compatible.

I'm not a Mac user and this isn't a Mac mag so lets get back to the Atari. NVDI in this country has always had a GDOS replacement built in. This, as I've already said, has developed into a full blown SpeedoGDOS replacement which has really come of age in version 4. It supports Speedo and TrueType vector fonts as well as the older bitmap fonts familiar to those of you who've had dealings with GDOS 1.1. The difference between vector and bitmap fonts is well known but for new comers to this area here's a very quick run down.

A bitmap font is constructed pixel by pixel. This gives you a font specifically designed to be displayed at one size. If you try to enlarge a bitmap font it becomes blocky and quickly loses its profile. A vector font is built up mathematically, if you resize this font the computer simply reworks the font so that it keeps its designed shape. For this reason all modern computers use Vector fonts of one type or another.

Installation of NVDI 4 is a simple affair. Double click on the install program supplied, fill out the registration dialog and away you go. Once installation is completed you'll notice one or two new utilities have appeared on your hard disk. These are designed to make life with NVDI 4 easier. One common compliant of NVDI 3 was that installation of new fonts was a bind.

To activate a font it had to be copied to the font folder called BTFONTS. To stop a font from installing you copied the font to a folder called HIDE inside the BTFONTS directory. Not a difficult operation I agree but some of the font file names can be pretty cryptic, so you often had problems identifying the fonts you wished to install or hide. This problem has been addressed with the inclusion of Fontname. A utility designed to ease the font installation process. Fontname can also be used to view fonts and print them.

Printers are obviously a vital part of all modern computer systems and it's great having vector fonts on screen but little point if you can't print out your latest best seller. NVDI 4 caters for all major printers, but for those of you who wish to fine tune it's performance for your particular printer the program Makeprn is supplied. Within this utility every aspect of your printers operation can be adjusted, including colour.

If you're not happy with the colour output then have a dabble with the "Colour Correction" dialog or if your black isn't black enough a "Black Separation" function is supplied. Print quality from NVDI 4 is superb and if you've ever waited for what seemed like hours to print from standard GDOS you're going to be amazed. NVDI 4 now accelerates your printer too.

The most frightening part of any GDOS setup is that dreadful assign.sys file. If you're one of those people who find it a cross between a normal text file and the instructions to build and launch a rocket to Mars you'll be happy to learn that you only need to tackle this file if you're still using bitmap fonts. Fortunately System Solutions have even supplied a utility that turns this daunting task into a piece of cake.

On the down side to all this you're going to need quite a powerful Atari setup. To get full use from NVDI 4 you're going to need a minimum of two megabytes of RAM and a hard disk. Why the memory? Well each letter of a vector font has to be constructed each time you press a key on the keyboard. A painstaking and slow process. The best way to speed this process up is to store each character of the font in memory after it has been built. This will speed up operation considerably but will use memory and hard disk space. The minimum memory cache NVDI will work from is 80Kb but the more you can put to one side the quicker NVDI 4 will operate.

If you're currently using NVDI 2.5 on a floppy based Atari and have no desire to use vector fonts then I'd have to say stick with it.

However if you are using vector fonts with Speedo 4 or 5 I'd say an upgrade to NVDI 4 is well worth the expense.

NVDI 3 users, if you have a colour printer or you're using MagiC (NVDI 4 has been specially optimised for Magic) I'd say an upgrade was on the cards. If you're using a mono printer under standard TOS I'd say an upgrade was only worth it if you're the kind of person who just has to have the latest software, but then if you are that kind of person you'll have it already.

In use NVDI 4 has been as reliable as all its previous versions. To sum up all I'll say is if you're using an Atari you need NVDI in one form or another.


Contact:0181 693 3355
E-Mail:ssolutions@cix.compulink.co.uk
Price:£59.95

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