2.5 KiB
FreeIntv
FreeIntv is a libretro emulation core for the Mattel Intellivision designed to be compatible with joypads from the SNES era forward even if they originally required a number pad.
Authors
FreeIntv was created by David Richardson. The PSG and STIC emulation was made closer to hardware and optimized by Oscar Toledo G. (nanochess), who also added save states.
The Intellivoice code has been contributed by Joe Zbiciak (author of jzintv), and adapted by Oscar Toledo G. (nanochess)
License
The FreeIntv core is licensed under GPLv2+. More information at https://github.com/libretro/FreeIntv/blob/master/LICENSE
BIOS
FreeIntv requires two Intellivision BIOS files to be placed in the libretro 'system' folder:
| Function | Filename* | MD5 Hash |
|---|---|---|
| Executive ROM | exec.bin |
62e761035cb657903761800f4437b8af |
| Graphics ROM | grom.bin |
0cd5946c6473e42e8e4c2137785e427f |
- BIOS filenames are case-sensitive
Entertainment Computer System
FreeIntv does not currently support Entertainment Computer System (ECS) functionality. Contributions to the code are welcome!
Controller overlays
Mattel Intellivision games were often meant to be played with game-specific cards overlaid on the numeric keypad. These overlays convey information which can be very useful in gameplay. Images of a limited selection of Intellivision titles are available at: http://www.intellivisionlives.com/bluesky/games/instructions.shtml
Controls
- Mini-Keypad - allows the user to view and select keys from a small Intellivision pad in the lower corner of the display.
- Controller Swap - Some Intellivision games expect the left controller to be player one, others expect the right controller. This isn't a problem if you have two controllers (and don't mind juggling them) but users with only one controller or using a portable setup would be effectively locked out of some games. Controller Swap swaps the two controller interfaces so that the player does not have to physically swap controllers.
| RetroPad | FreeIntv Function |
|---|---|
| D-Pad | 8-way movement |
| Left Analog Stick | 16-way disc |
| Right Analog Stick | 8-way keypad |
| L3 | Keypad 0 |
| R3 | Keypad 5 |
| L2 | Keypad Clear |
| R2 | Keypad Enter |
| A | Left Action Button |
| B | Right Action Button |
| Y | Top Action Button |
| X | Use the Last Selected Intellivision Keypad Button. In Astrosmash, for example, you can leave "3" selected to enable instant access to hyperspace. |
| L/R | Activate the Mini-Keypad |
| Start | Pause Game |
| Select | Controller Swap |