TI-99/4A FAQ: Sidecar expansions

Many Sidecar Expansions were made for the TI-99/4A:

TI Sidecars:

  • Speech Synthesizer
  • 32k Memory Expansion
  • SS/SD Disk controller
  • RS232
  • PCode
  • Video Controller
  • Solid State Thermal Printer

Corcomp Sidecars:

  • CC9900 Micro Expansion System
    • The 9900 Micro expansion from Corcomp provided 32k and also an optional board can be installed to provide a DSDD disk controller and RS232/PIO ports
    • Power Supply¬† 5 pin DIN
  • Corcomp Clock
  • Corcomp 256/512k Ramdisk

Myarc Sidecars

 

Other Sidecars

  • Boxcar Peripherals RS232
  • Axiom ParallAx Printer Interface
  • Triton Turbo XT

Homebrew Sidecars

  • JediMatt42
    • 32k RAM Sidecar
      • https://jedimatt42.com/ti32kmem.html
    • TIPI Sidecar (ram card with 44pin required)
      • https://github.com/jedimatt42/tipi/
  • Arcadeshopper
    • SAMS 1mb Sidecar
  • Jgparker
    • 32k/TIPI combo card
      • fits in original speech synth case (after removing original board) also 3d printed cases are available
      • https://github.com/jgparker/tipi

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