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Regulus

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Posts posted by Regulus


  1. On 3/2/2020 at 7:25 AM, Ksarul said:

    How did you manage to obtain your copy of the source code?

    About 30 years ago, I purchase a TI Pascal Card from the classified ad. For the same price of the Pascal card, I got several TI-99/4A computers, PEB, cartridges, disks, EEProm and books. 

     

     

    On 3/2/2020 at 7:25 AM, Ksarul said:

    If you happen to have any additional TI source code, that too would be useful.

    99/4 Assembler
    99/4A Plotting Utility Ver. 2.0   4/83

    Plot Assembler Source File

    01.jpg

    1983, Plot Assembler Source.zip

    • Like 4
    • Thanks 1

  2.  

    18 hours ago, Ksarul said:

    That is the cassette routine from GROM 0 of the console. There is a lot more to those. I scanned all of the data from GROM 0 in using a set of docs I received from Doug Warren last year, but as he noted, there were several missing pages in the set he had, so we might be lucky and find out the ones you have contain one or more of those missing pages. That said, your set may go beyond the routines in GROM 0 and into the rest of the BASIC interpreter in GROMs 1 and 2. We do not have original TI vommented source code for those. The pieces we do have are attached here.

    console source.zip 9.18 MB · 14 downloads

    On Cassette, pages are identical.  On the Monitor, I have page 33. which is missing from the pdf file. Page 33 is the Word Document

    I have the same 6 GROMs.

     

    Monitor - Page_033.jpg

    • Like 5

  3. There is two ways to convert Scott Adams games to a cassette tape.

     

    From TI-99/4A, I did it with Tex Comp Adventure Editor. I was unable to find the program on whtech.com.

     

    There is a utility that will allow you to convert a FIAD file to a Wave file.

     

    FIAD files can be found http://ftp.whtech.com/games/scott%20adams%20adventures.zip

     

    Using a Disk Manager in an emulator, games exist in a disk imagine, needs to be saved as a FIAD file.

     

    Hopefully the next step of recording a wave file from the computer to a cassette tape will be succesful.

     

    CS1er

    Author: Dean Corcoran

    Description: Converts TI cassette files to WAV format.

    CS1er is a program used to decode the binary sound of files stored
    on cassette tapes, used on Texas Instruments TI99/4a Computers. This
    is then saved in 'FIAD' file format used on many TI Emulators.
    CS1er's objective is Data accuracy of badly recorded or damaged tapes.
    CS1er now contains the ability to save a FIAD as a Wav file.

    NEW! - 2/15/05

    Version 0.9 Beta Release 1 - Windows Version

    • Reads Cassette Sound files in WAV, Mono, 8 Bit, 44.1KHz format.
    • Very Tollerant of Bad recordings.
    • WAV File Graphic display while processing.
    • Better than real TI for accuracy.
    • Allows you to continue when bad records found.
    • -- Notes --
    • CS1er should run on any Windows PC system Pentium or above, VGA screen or better.
    • Like 1

  4. Has anyone on this board, heard of OCR? Optical Character Recognition

     

    It should come free with your scanner or there is a freeware.

     

    If the printed program is a good copy and no smears, it can easily be converted to text. This does depend on the emulator and utilities to get the PC text converted to the computer.

    • Like 1

  5. Forgive me if this sounds blasphemous, but I'm thinking of doing a myth-busters type experiment (sans explosives) in my backyard. The idea is to test whether it is feasible to dig up buried carts and restore them to working condition. Basically, I will bury an Atari cart in my back yard and dig it up a year or more later, and then after exhuming it, attempt to restore it to playable condition.

     

    in theory, a lot of moisture + no cement coffin = faster decay time. Only with no rotting garbage (but lots of earth-worms) and only one year instead of 30. I guess the "myth" I'm trying to "bust" is that the landfill fodder will actually remain playable after being buried for 30 years. Hopefully, it's true...

     

    -----------------------------------------------------------------------------------------------------------------

     

    www.atariage.com2600archivesdurability.htmlSystemID=2600

     

    2600 Cartridge Durability

    From: [email protected] (John Earney)

    Subject: Re: Backups and copiers

    Date: Fri, 03 Jun 1994 08:18:37 GMT

     

    In article <[email protected]> [email protected] (Chad Tower) writes:

     

    > I have seen a lot of talk recently about making backups of games, and

    >having copiers for them. Why would someone want to back up a game? Do they

    >get erased or something? I have played on almost every system imaginable, and

    >have never had the actual game erased (although on Baseball Stars for the NES,

    >the data got erased all the time). Can someone help me understand this?

    its easy. they want to make a quick buck off you being scared that your

    game is going to get erased. I don't think its even legal to make a

    backup copy of a ROM (but of course who would care with an atari game.)

    I read in some software copyright law book that ROMs are considered

    "durable" and so making a backup copy isn't necessary (like it is with

    magnetic media.)

    backing up an atari cartridge is absurd. the games are stored in ROM.

    that's solid state (one chunk of silicon with different concentrations

    of ions implanted into it to make transistors.) you cannot corrupt the

    data because you can't move the ions around in the silicon lattice

    (just like its impossible to move the colors around in a chunk of granite.

    you can't do it unless you break it up into pieces.) the metal pins on

    the ROM package are connected to certain places on the silicon by tiny wires.

    plastic (or ceramic) is poured over all that and formed into the ROM package.

    its all one chuck of plastic and metal with no holes, no spaces, and no

    mechanically unstable parts! the ROM is then soldered into place on the

    little printed circuit board (PCB) and then mounted in the plastic casing

    of the cartridge.

     

    there are only 2 ways that I can think of that an atari cart can go bad.

     

    1) if a large voltage or static charge is taken across a transistor on the

    silicon chip then the transistor will get "fried" (caused by so

    many electrons moving through a small space at once that the physical

    properties of the silicon are changes in that area of the chip.)

    this will permanently damage the chip and your game won't work.

     

    2) there is corrosion on the metal contacts on the game's PCB that keeps

    electrons from flowing easily from the atari console to the game's

    PCB.

    that can be fixed by cleaning off the corrosion with a pencil eraser,

    a Qtip with alcohol, or a very fine sandpaper if its _really_ bad.

     

    I have over 2,000 atari carts and I've only found a couple that don't work

    after they're cleaned.

     

    exactly how durable are atari carts? I thought I'd see for myself...

    I took a combat cart that was made in the 32nd week of 1981 (you can tell

    by reading a little number code printed on the ROM) and did some experiments

    on it to see what how much abuse it could take and still work.

     

    1) I took the cart and dropped it out of my 2nd story window onto the cement

    5 times. the plastic part of the cart was in pieces, but the game

    still worked.

     

    2) I put the cartridge back together as best I could and put it out in the

    street. it got run over by a jeep. took it inside and it still

    worked. at this point there was nothing left but the PCB with the

    ROM soldered on it (and a metal cover that went over the ROM.)

     

    3) I then put the PCB in boiling water for 5 minutes, took it out and

    immediately packed it in a snowball that I made out of frost from my

    freezer. after 5 minutes in the frost ball, I broke all the ice off

    it and plugged it into my atari... It worked!

     

    4) I have this magnet that's so strong that if you hold it within about 1.5

    feet from a TV screen all the color gets sucked to one side of the

    screen! well, I took that magnet and rubbed it all over the PCB and

    ROM. plugged it in... and it worked!

     

    5) next I took a lighter and held the ROM right above the flame. I left it

    there for a few minutes until the ROM was smoking and giving off

    a nasty smell. I cleaned off all the suit and plugged it in and

    it still worked.

     

     

    6) okay, no more mr. niceguy! I took it outside and had 3 cars run over it,

    I threw it up as high as I could and had it land on the cement twice,

    and I threw it down onto the cement as hard as I could twice. at

    this point the metal cover that goes over the ROM had broken off, the

    PCB was chipped on all the corners, the ROM was smashed onto the PCB

    so that the pins were all squished on one side and were being pulled

    out of the solder on the other side. I had to straighten out the pins

    so that none were touching each other and I had to hold the PCB

    together in one place so that the metal contacts would be in the right

    place when I plugged the game in. guess what... it _still_ worked!!

     

    7) it had taken heat extremes, shock, and magnetism. next up was

    electricity. I took the atari power supply (9V, 500mA) and connected

    some alligator clips to the output terminals of the power supply.

    then I rubbed the other end of the alligator clips across the metal

    contacts on the game's PCB. I tried a bunch of different

    combinations and always had both alligator clips touching the PCB

    contacts so that electricity would be flowing. I plugged the game

    back in and much to my surprise it still worked!

     

    8) I grabbed my hammer, laid the game down on the cement and gave it a good

    smack. the ROM cracked right in half breaking the silicon wafer.

    I plugged the game in and of course it had died on that one.

    it took all that abuse to ruin a 13 year old atari game. I'd say they're

    pretty damn durable!

    _____________________________________

    --

    [email protected][email protected]_

    XTC Nakajima Michiyo nin Revolution Atari2600 KOF'94

    "I've got your Balloons, Jerk..."

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