By Roy T Beck

I remember way back in the days when NEWDOS2.1 was new, an occasion when Harv Pennington came to the OCTUG and explained the directory structure of TRSDOS 2.1. Not having disk drives then I was still using cassette tapes , his lecture sailed over my head at about 10,000 feet above MSL My Sensibility Level . He did a very good job of presenting the ins and outs of the mysterious disk sectors by means of flip charts, but I really got very little out of it. Fortunately, fragments of his lecture...

Model I

Recently, I bought a Star Micronics NX-1000 printer for my TRS-80.1 had quite a bit of trouble, because it had a bug in the ROM that prevented it from talking to computers that ran slower than about 4 Megahertz clock speed. While I was debugging this problem, I wrote a handy little printer utility called LPRINT, which now is in constant use. It allows you not only to send any sequence of characters to the printer while you are in DOS, but also to monitor the status of the printer. This routine...

New Column by Dr Michael W Ecker

Hi, fellow TRSTimes readers and TRS-80 users This is the first of an irregular sequence of articles, programs, tutorials, and challenges to appear in this publication. To the extent that your feedback warrants continuation, I'll keep this going. I don't get paid for this, but if a few of you subscribe to my own publication as a result, or a bunch of you write to say how much you love my stuff, then those strokes will be adequate reward for my meager bank account and fragile ego. This Issue's...

Million Dollar Word

All you need is a little number sense and a sense of word play. If you want to try to write a program to help you, you can be my guest, but I will provide one here as well, plus a tutorial. Assign to each letter of the alphabet a monetary value based on alphabetical order A 1, B 2, C 3, , Y 25, and Z 26. Just count out the letters. Let the value of a word be the product of the values of the constituent letters, counting multiplicity frequency . For instance, the...

For Mod I III

DOS commands from Basic in TRSDOS 13. - Shell Basic Printer utilities - Assembly language tutorial - and much more, In the old Model I days, just when you thought you had everything under control, you realized you absolutely needed another piece of equipment in order to do some really serious computing. First, there was the memory expansions from 4K to 48K. Next was the retirement of the cassette recorder when the disk drive was brought home. This lonely creature soon multiplied and became...

By Lance Wolstrup

TRS-80 Model I amp III password protection has always struck me as being annoying, at best. At worst, it is ridiculous and a complete waste of DOS programming space. The more adventurous of us have overcome this 'feature', either by using ZAP programs, or by writing our own programs to strip individual files of its dreaded passwords. In the case of Model I amp III LDOS, these grand efforts were all 'doing it the hard way'. The people at LDOS were always generous, giving us the passwords to all...