• Commodore Free Magazine, Issue 88 - Part 7

    From Stephen Walsh@39:901/280 to All on Wed Jul 1 16:56:32 2015
    plement the action. Buts as this is a first attempt it hats off that
    the game is so playable, you can really see the creator has put the work in
    and I hope this is going to mean we have more SEUCK games from this
    designer, Maybe he could team up with Richard Bayliss and Alf the SEUCK
    masters to help and guide his creations.

    SCORES

    Graphics: 6/10
    some nice animations
    Sounds: 2/10
    Gameplay: 6/10
    Overall: 6/10

    Very competent effort for a first
    time SEUCK game, please create more!



    *************************************
    PROGRAMMING IN BASIC
    A Root Canal with No Anaesthetic
    By Lenard R. Roach
    *************************************

    "How in poodoo did this happen?"
    It was about 1:30 in the morning on a cold Tuesday in February. I sat in
    my leather like office chair with the broken wheel, staring at the screen
    of my Commodore computer wondering what this mess of text was on the
    monitor. This is not what I wrote in the command lines to tell the
    Commodore 128 to do. The question then became: What did I tell the
    Commodore to do?

    I know that part of the problem was fatigue. I had been up since six in
    the morning to get ready for work, then worked a fifteen hour shift on the
    job before I got to come home and relax, but I knew that this project on
    the Commodore has been waiting on me since before Christmas and needed to
    be started, so after resting and unwinding with some cold sandwiches from
    the refrigerator and a video short or two on YouTube, I left the living
    room to sit at the Commodore in the Roach Centre's dedicated computer room.

    I sat at the Commodore desk, which is located on the south wall of the
    room; my son's Mac Mini and Xbox One were on the north wall. He was
    already in the room using the Centre's wireless Internet to connect and
    play with some online friends, so as to not to disturb his game play, I
    grabbed my iPhone 4 and headphones that were nearby and started playing
    some of my Electric Light Orchestra over the headphones while I started the task of programming what I needed into the Commodore.

    The problem in question was a subroutine that I was adding to an already existing program that I have tried to sell at the Las Vegas Commodore
    computer convention a couple of years ago. I only made a couple of sales
    on the program, but decided that for this year's convention I would make
    the program more user friendly by adding more subroutines that granted more access to different needs that, I thought, the user would need. One of
    those subroutines was a directory reader written by the late Jim
    Butterfield that he gave out on a disk. It came in a collection of disks
    that, I believe, came directly from Commodore itself back in the day. I
    know that the program was copyrighted so I gave credit to Mr. Butterfield
    in the REM statements included in the program text. Mr. Butterfield's directory reading program needed some slight modifications to allow it to
    work with the needs of my program's main function, but before I did that I searched all the local Commodore clubs, boards, and websites looking for a better directory reading program that worked as a subroutine to a bigger conglomeration of the work. Out of the dozen or so directory readers I
    found around, only Mr. Butterfield's directory reader would cooperate best with what I was trying to accomplish in BASIC.

    What I saw on my screen that night made no sense. Instead of printing
    the directory's contents on the screen in a book fashion (left to right),
    it printed the information in a column (up to down), with each letter of
    the title of each file in a straight line. I knew I missed something in
    the translation of the subroutine from the master disk to the program I
    wanted to put it in. I know that some advanced Commodore programmers know
    how to embed a subroutine into a program without having to enter it in a
    line at a time; I did not, so I know that the problem existed in what I put where in the subroutine.

    The first thing I did was print off a copy of the working subroutine
    using my Star NX-1000C printer. I did this by loading the subroutine into
    the Commodore then, on a blank line on the screen I typed the following
    string:

    OPEN3,4:CMD3:LIST:PRINT#3:CLOSE3
    This gave to me a copy of the program in printed form. At first glance
    of the subroutine and what I had of the same subroutine on my screen, everything was correct. Just to make sure that my Commodore was freaking
    out I rebooted the machine and loaded a copy of "Tea 4 2" which uses the
    same directory reader by Mr. Butterfield. I accessed the directory in
    "Tea 4 2" just fine and the display on the monitor was perfect. That
    proved it; the Commodore machine was fine and there was no corruption of
    the directory reader, therefore, the corruption must be in my translation
    of the subroutine into the new program.

    Jim Butterfield was an expert programmer. He knew that there should be
    no waste of space when it came to coding on the Commodore. Even though his directory reading subroutine is several lines in length, every letter, punctuation, and algebraic expression had to mean something. I started the erasing and copying the subroutine several times just to be sure I wasn't
    doing something wrong and each time I got the same up and down display of
    text on the screen. I knew I was missing something, but I didn't know
    what. It had to be something small; so insignificant that I am walking it
    over each and every time I copied the subroutine into the Commodore line by line. I even printed out the entire program where the directory reader was going just to see if there was any way the program itself was looping into
    the subroutine and causing an error. Something else I found frustrating;
    the computer didn't give me an ERROR IN LINE...so I could go right to the offending line of code and fix the problem. According to the Commodore,
    the program was right and the machine was able to read it without a hiccup.

    2 am...3am...4 am; the time kept quickly getting away from me. In two
    hours I had to get up and start work, but this frustrating little
    difficulty in the program was really getting on my nerves to a point that I
    was taking this programming error personally. I knew I would be as
    worthless as a zombie on a quiz show if I didn't knock this fervent
    searching for the error and go to bed, but I also knew that even if I did
    go to bed I would lie there thinking about what it was that I possibly did wrong and not sleep a wink. However, by 4:30 am I was resolved that this
    error would never be found and I would go to bed. However, before checking
    in for 90 minutes of sleep, I would look at all the printed programs one
    more time and see if I could find the error. I think I even shot a prayer
    up to heaven asking The Almighty to show this poor, exhausted fool where
    his mistake was in copying the subroutine.

    At 4:12 and 42 seconds on the next day in February, I saw the error. It
    was so small that my tired and reddening eyes were looking over it time and time again. I felt like the worst of the worst of whatever derogatory name
    I could call myself, and I called myself that several times before I went
    back to the keyboard and started typing. The error? I forgot to add a semi-colon at the end of one of the lines of text in the subroutine.
    Without the semi-colon telling the Commodore to carry on to the next line
    what was written in the offending line, the program insisted that this line
    of data was concluded and went onto the next line in the code, thus
    creating the up and down printing style when the program listed the
    directory on the screen. I added the missing semi-colon to the line in question, saved the program to disk using the "save with replace" option I
    read about in my copy of the Programmer's Reference Guide, then ran the program. I selected the number on the screen that told the Commodore to
    read the directory onto the screen. There to my relief the display on the monitor showed what was on the disk from left to right. Victory has been seized and the entire program was saved, including the directory reading subroutine.

    I was done with coding for the rest of the day, and probably for the next several days. With the adrenaline gone out of my system with the discovery
    of the mistake, my fatigue took full control of me, I shut off the
    Commodore and staggered into bed, flopping face down onto the pillow. I
    knew that for the next hour and fifteen minutes, I would sleep the sleep of
    a victorious knight who won the prize from the maiden's hand after a day's worth of jousting, and sleep I did, not knowing when I would wake up;
    hopefully at the appropriate time, but I forgot to set the alarm during my short celebration over finding and fixing the code error...

    The phone rang next to my bed for only God knows how long, but its tone
    was loud enough to arouse me out of my slumber. I rolled over to face my
    night stand where my phone rested each night before I went to bed. Still tired, I almost rolled over onto Dover, my yellow striped tabby cat who snuggled up to me in the middle of the morning. With weak fingers, I
    fumbled with the phone, trying to find the answer button on it. After a
    couple of seconds, I finally answered the ringing.

    "Hullo?" I said into the receiver in a groggy voice.

    "Lenard, are you coming to work today?" It was dispatch.

    Aw nuts! I looked at my wall clock in the room. It read 9:30.

    "Yeah, yeah, Steve, I'm ready to go." I lied out my exhausted face; I was still in bed and in my sleeping clothes, and Dover was lying next to me.
    "What do you have for me?"

    "I've got a ten o'clock downtown that needs to go to Lee's Summit by
    11:30 and then pick up at Venture Industries while in Lee's Summit a couple
    of packages that needs to be in Olathe by 1:30, but be sure to pick up the
    bank bags at 10th and McGee before you head to Olathe. Do you got all
    that?"

    "Yeah, yeah, I got it." I lied again. I didn't even have the strength to pull the covers off of me or move Dover out of the way so I could get up.

    Steve continued on. "I'll send the orders to you over your cell phone. You've got a half hour to get downtown; better hop to it."

    "Yeah, okay. I'm on my way." I lied a third time. I was just moving
    Dover out of my way, kicking my covers off me and scrambling out of the
    bed. I quickly hung up the phone. The adrenaline that was motivating me
    the night before once again kicked in as I rushed around to get my uniform
    and pants on. In the short space of five minutes I was dressed and heading
    for the front door. As I passed by the Roach Centre's computer room, I
    stopped and gave my Commodore computer stand a long stare, remembering what
    we had been through the night before, and I smiled, remembering the victory
    I won over the problem yesterday. I tapped on the door frame with my hand. "Later today, my friend," I said to the silent machine sitting on the
    opposite end of the room. "We'll do this again later today." I grabbed my winter coat off its hook in the living room and headed out the door to
    begin my day smiling, knowing that I will indeed have a meeting with my Commodore - later today.



    *************************************
    REVIEW: DOWN
    For the unexpanded VIC 20
    By Commodore Free
    *************************************

    Author: Revival Studios
    (www.revival-studios.com)
    Requirements: Unexpanded VIC-20 +
    Joystick.

    DESCRIPTION:

    Your village is under attack! Fleeing into the depths of the caves, there
    is only one way to go: Down!!! Use the joystick to manoeuvre through the holes and use gravity to escape death.

    For more information, you can visit my website at: www.revival-studios.com

    Well its Another exciting developer, and as he releases more software for
    the unexpanded Vic 20, Its either going to be truly brilliant or complete rubbish, with the limited resources available on the machine it really is a labour of love, however many class games have been released for the
    unexpanded machine, so lets start the review.

    The game starts with quite a classy splash screen, it`s minimal as the game loads directly into memory rather than in stages. However nothing more is really needed. The game has been released on a number of retro platforms
    by the company, and so without more chat let's press fire and start.

    The graphics look a little squashed on the VIC version, but the game plays
    as well as if not better than every other version. The game play is
    simplistic to say the least, Move left or right to try and manoeuvre your
    man through a gap to keep him moving down the screen as the screen scrolls steadily upwards, what will surprise you is the speed the screen scrolls,
    at times you wonder if your VIC's been supercharged, or if a power surge
    has almost torched the processor

    The background is a plain blue screen with just the ledges on the screen
    and sides the main character is animated well and as he falls he stretches
    out in a concertina fashion, sound is minimal with just bleeps and pops,
    the odd bonus appears to collect but its just a case of moving left and
    right in a frantic speed fashion, How anyone can get over 100 points is
    just mind-blowing as that's about my limit each time. And trying to a
    picture of the screen while its moving that fast isn't possible hence the screen with a score of 1

    SCORES

    Gameplay : 7/10
    simple and frustrating
    Graphics: 6/10
    Sound: 6/10
    Overall: 6.5/10

    SUMMARY

    It's a simple but frustrating game with a good one more time hook, the
    score is shown at the end of the game.

    Price: 9,95 euro (Cassette Tape) / 3,95 (Digital Download)

    If you buy the tape version, you will of course get the digital download
    for free.



    *************************************
    COMPUTING HISTORY WITH COMMODORE
    By Mr NOP
    *************************************

    Forget Facebook, Commodore Was Our Original Social Network

    My first exposure to the Commodore computer was back in 1980. I was a
    Grade 7 student and one day I walked into science class to discover three
    large white Commodore PET computers with built in green screens. I'd never touched a computer before and found myself somewhat intimidated by the
    numerous keys and strange symbols on the keyboard. We had some basic
    programs available on cassette tape which I learned were brought up using
    the LOAD command. There was something magical and almost exciting about inserting a cassette tape into the tape deck, pressing play and watching
    the green glowing pixels on the screen as you waited to see if your program would be found.

    The tape would begin to send data to the computer and the counter on the cassette deck would slowly advance. As I watched the glowing green pixels eventually I'd see a message on the screen:

    LOAD
    PRESS PLAY ON TAPE #1
    FOUND SPACE INVADERS
    LOADING

    Unlike today's state of the art disk drives, storing programs on analogue
    tapes was a bit of a hit and miss process. The teacher used the wall
    mounted clock to time the retrieval of programs on the tape rather than use
    the tape counter. The reason for this was that the counters between tape devices could be different. A cassette tape's case might have had a label
    like this:

    Space Invader - 0 seconds Alien - 20 seconds N.A.B. - 48 seconds

    To load N.A.B. for example, you'd have to rewind the tape all the way to
    the beginning, and then press the fast forward key on the tape deck while watching the wall clock. When 48 seconds had elapsed, you'd press STOP,
    and then type the LOAD command. This was such a primitive way to store
    data in comparison to today's I-POD's in which you can load a few hundred albums onto it and instantly retrieve them. Cassette tapes were also prone
    to LOAD ERRORS when the data on the tape was received incorrectly.
    (Useless trivia: The PET actually saved two copies of a program so that it could compare for errors)

    The PET Computers came with the BASIC software langua

    --- MBSE BBS v1.0.4 (GNU/Linux-i386)
    * Origin: Dragon's Lair ---:- bbs.vk3heg.net -:--- (39:901/280)