hhos

Differences btwn TI99/4 expansion box and TI expansion box?

By hhos, February 10, 2020 in TI-99/4A Computers

Instruction Format X ? 10 ?

By hhos, January 21, 2020 in TI-99/4A Development

• instruction format
• format x
• (and 1 more)

  Tagged with:

  • instruction format
  • format x
  • opcode map

CRU Availability of bits in console CRU?

By hhos, January 1, 2019 in TI-99/4A Development

• CRU
• console upgrades
• (and 1 more)

  Tagged with:

  • CRU
  • console upgrades
  • console mods

Upgrade Fully populated Scratch Pad for Ballmann-Clulow 32K mem expansion

By hhos, January 21, 2019 in TI-99/4A Development

• Upgrade
• Memory expansion
• (and 1 more)

  Tagged with:

  • Upgrade
  • Memory expansion
  • console

DSR error 0094 when I try to use COPY directive in E/A II 1 2 3 4

By hhos, December 7, 2018 in TI-99/4A Development

Are the schematics of TI99/4A accurate? Schematics for beige console

By hhos, January 9, 2019 in TI-99/4A Development

• Schematics