Updated 20190222
Overview
CaDD PC99 Suite is a software-only package that includes:
- 
- PC99W. A Windows program that emulates the Texas Instruments TI-99/4A Home Computer and selected TI and third-party peripherals.
 - PC99W Config. A Windows program that lets you specify the components to be emulated by PC99W.
 - PC99W Disk Utilities. A Windows program that lets you catalog and manipulate emulated TI diskette files.
 - The Cyc. This contains all known TI modules and disks, and many, many other files.Details: The Cyc details
 - a99 Assembler. A freeware TI-99/4A cross-assembler.
 - PC99 DOS. This is based on PC99 Stage 6 Full. For Windows 7 and higher this requires the freeware program DOSBox. PC99 DOS is supplied for “legacy” users.
 - CaDD Launcher. A program that allows quick selection of CaDD PC99 Suite programs.
 
Supported PC operating systems
- Microsoft Windows XP.
 - Microsoft Windows 7.
 - Microsoft Windows 10.
 
Note: Not tested with Windows 2000, Windows Vista, or Windows 8 or 8.1. There is no theoretical reason why the CaDD PC99 Suite should not work on these operating systems.
Required hardware
Personal computer with:
- Intel Pentium 5 3.0 GHz or higher recommended.
 - 4 GB Memory minimum recommended.
 - 1280 x 1024 graphics or better.
 - Hard drive with at least 1 GB space free.
 - DVD-R or DVD-RW optical drive | USB 2.0 or higher port.
 - Optional: COM port | USB->COM adapter, if transferring disks from TI to PC.
 
Required software
- A supported version of Microsoft Windows with DirectX.
 - An “unzip” program such as 7-Zip or WinZip.
 - A program that can read Adobe Portable Document (.pdf) files.
Ex: Adobe Reader, free from Adobe - A program that can read ASCII text files. Ex: Notepad, which is included with Windows.
 - The ability to start and be able to use a command prompt on your PC.
 
Installation
See the CaDD PC99 Suite overview and installation documentation:
“CaDD PC99 Suite overview and installation”
Licensing
Until the release of CaDD PC99 Suite, CaDD offered PC99 Stage 6 {Full | Light} and The Cyc separately. Because of licensing arrangements with Texas Instruments and third-party vendors, you had to be an owner of PC99 Stage 6 {Full | Light} to order The Cyc. By bundling PC99 DOS, the PC99W emulator, and The Cyc in CaDD PC99 Suite, this restriction no longer applies.