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ChicagoTIUG
  • Home
  • Meeting Videos
  • Informative Videos
  • Chicago TImes Newsletter
  • File Exchange
    • The Library
    • Atarisoft
    • Infocom
    • Scott Adams
    • TI Modules
    • 3rd Party Games
  • For Sale
  • Links
  • Eternal Flame
  • Hall of Fame
  • More
    • Home
    • Meeting Videos
    • Informative Videos
    • Chicago TImes Newsletter
    • File Exchange
      • The Library
      • Atarisoft
      • Infocom
      • Scott Adams
      • TI Modules
      • 3rd Party Games
    • For Sale
    • Links
    • Eternal Flame
    • Hall of Fame

 

 

chicago.ti994a.usersgroup@gmail.com

hals12@hotmail.com

The Chicago TI User Group is one of the oldest groups dedicated to the TI-99/4A Home Computer. We have been in existence since 1980 and are now in our 46th year!

Thank you to everyone who attended and helped us make this years faire a great Success! 


Mr. Do's Castle, shown at the faire, is now available to download in the File Exchange

Super River Raid, compliments of the TI-99 Italian User Club is now available!

Venture is now available for download in the File Exchange

President

Group Archivist

Victor Steerup

 Secretary

Faire Coordinator

Hal Shanafield

Meeting Production

Technical Support

James Mazurek

 Faire Production

John Shanafield

Kyle Phillips

 Newsletter Editor

Webmaster

John Behnke

 Support Services

David Behnke

Kyle Phillips

Next meeting: Saturday, December 5th at 1pm cst

Our monthly meetings are broadcast live via YouTube. There may be a delay of 15-20 minutes. During the meeting, you may make comments or ask questions via YouTube and we will try our best to answer.

We strongly encourage you to attend our meetings in person if possible. There is ample free parking located in the parking garage under the library as well as an adjacent lot. Meetings last about two hours.

We welcome comments and suggestions pertaining to the meetings.

Click "Monthly YouTube Meeting Link" above to connect to live stream

Tell me about the TI-99/4A Home Computer

The Texas Instruments TI-99/4A is widely known as the first 16-bit home computer. It hit the market in 1981 and sold nearly three million units before TI discontinued it after a massive price war. Here's what made the hardware unique: TMS9900 CPU 16-bit processor running at 3.0 MHz. The dedicated video chip that handles 32 moving sprites and 16 colors. A separate sound chip that plays three musical voices and one noise channel. Memory structure: It packs 16 KB of RAM with the ability to add 32k. Owners didn't open the case to add upgrades. Instead, they plugged modules right into a side port including a Peripheral Expansion Box (PEB) which held a floppy drive, a 32 KB memory expansion, RS232 Card and more. Software came on audio cassettes, floppy disks or Solid State Software cartridges. These command modules plugged in next to the keyboard for instant loading.

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