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PSPColem 1.3.1

ZX-81's version of PSPColem — the ColecoVision emulator. Ported from Marat Fayzullin's ColEm. This is compiled for custom firmwares.

Welcome to PSPColem

Original Author of ColEm

Marat Fayzullin

Author of the PSP port version

Ludovic.Jacomme also known as Zx-81 (


ColEm is one of the best emulator of the ColecoVision videogame system
running on FreeBSD, HP-UX, SunOS, Solaris, Linux, and other Unix systems.
There are also ports to MacOS, MSDOS, Windows, OS/2, PocketPC and other
systems. See for further informations.

PSPColem is a port on PSP of the Unix version 1.0 of ColEm.

Thanks to Danzel and Jeff Chen for their virtual keyboard,
and to all PSPSDK developpers.

*** Special thanks ***

-> Fredjmh123 for his advices on the sound support ! ***
-> Crait for his work on graphics for previous versions

This version of PSPColem supports IRDA-Joystick box designed by
my good friend Buzz ( see ).
Schematic and PIC source code is provided in contrib folder.

This package is under GPL Copyright, read COPYING file for
more information about it.


Unzip the zip file, and copy the content of the directory fw5.x or fw1.5
(depending of the version of your firmware) on the psp/game, psp/game150, or
psp/game5xx if you use custom firmware 5.xx-M33.

It has been developped on linux for Firmware 5.01-m33 and i hope it works also
for all others M33 firmwares.

Put your rom image files on "roms" sub-directory.

For any comments or questions on this version, please visit or


3.1 - Virtual keyboard

In the ColecoVision emulator window

Normal mapping :

PSP ColecoVision

Triangle 1
Square 2
Cross FIRE1
Circle FIRE2
Up Up
Down Down
Left Left
Right Right

LTrigger Toogle with L keyboard mapping
RTrigger Toggle with R keyboard mapping

LTrigger mapping :

PSP ColecoVision

Square Fps
Triangle Load state
Cross Save state
Circle Swap analog / pad
Up Inc delta
Down Dec delta
Left Render mode
Right Render mode

RTrigger mapping :

PSP ColecoVision

Square Reset
Triangle *
Cross Auto-fire
Circle FIRE2
Up 0
Down 3
Left Dec Fire
Right Inc Fire

A-Pad Joystick

Press Start + L + R to exit and return to eloader.
Press Select to enter in emulator main menu.
Press Start open/close the On-Screen keyboard

In the main menu

L+R+Start Exit the emulator
R Trigger Reset the ColecoVision console

Triangle Go Up directory
Cross Valid
Circle Valid
Square Go Back to the emulator window

The On-Screen Keyboard of "Danzel" and "Jeff Chen"

Use Analog stick to choose one of the 9 squares, and
use Triangle, Square, Cross and Circle to choose one
of the 4 letters of the highlighted square.

3.2 - IR keyboard

You can also use IR keyboard. Edit the pspirkeyb.ini file
to specify your IR keyboard model, and modify eventually
layout keyboard files in the keymap directory.

The following mapping is done :

IR-keyboard PSP

Cursor Digital Pad

Tab Start
Ctrl-W Start

Escape Select
Ctrl-Q Select

Ctrl-E Triangle
Ctrl-X Cross
Ctrl-S Square
Ctrl-F Circle
Ctrl-Z L-trigger
Ctrl-C R-trigger

In the emulator window you can use the IR keyboard for
cursor keys (but it doesn't work well).


If you want to load rom image in your emulator, you have to put your rom file
(with .zip, or .rom file extension) on your PSP memory stick in the 'rom'

Then, while inside PSPColem emulator, just press SELECT to enter in
the emulator main menu, and then using the file selector choose one
rom file to load in your emulator.

Back to the emulator window, the rom should start automatically.

You can use the virtual keyboard in the file requester menu to choose the
first letter of the game you search (it might be useful when you have tons of
games in the same folder).

Entering several time the same letter let you choose sequentially files
beginning with the given letter. You can use the Run key of the virtual
keyboard to launch the rom.

You may use the Trigger key to swap between the two virtual keyboard panels
(numbers & letters)


For given games, the default keyboard mapping between PSP Keys and
ColecoVision keys, is not suitable, and the game can't be played on PSPColem.

To overcome the issue, you can write your own mapping file. Using notepad for
example you can edit a file with the .kbd extension and put it in the kbd

For the exact syntax of those mapping files, have a look on sample files already
presents in the kbd directory (default.kbd etc ...).

After writting such keyboard mapping file, you can load them using the main menu
inside the emulator.

If the keyboard filename is the same as the rom filename (.zip etc ...)
then when you load this rom, the corresponding keyboard file is automatically
loaded !

You can now use the Keyboard menu and edit, load and save your
keyboard mapping files inside the emulator. The Save option save the .kbd
file in the kbd directory using the "Game Name" as filename. The game name
is displayed on the right corner in the emulator menu.


You can use cheat codes with PSP-Colem You can add your own cheat codes in the
cheat.txt file and then import them in the cheat menu.

All cheat codes you have specified for a game can be save in a CHT file
in 'cht' folder. Those cheat codes would then be automatically loaded
when you start the game.

The CHT file format is the following :
# Enable, Address, Value, Comment
1,36f,3,Cheat comment

Using the Cheat menu you can search for modified bytes in RAM between
current time and the last time you saved the RAM. It might be very usefull to
find "poke" address by yourself, monitoring for example life numbers.

To find a new "poke address" you can proceed as follow :

Let's say you're playing Zaxxon and you want to find the memory
address where "number lives" is stored.

. Start a new game in Zaxxon
. Enter in the cheat menu.
. Choose Save Ram to save initial state of the memory.
. Specify the number of lives you want to find in
"Scan Old Value" field.
(for Zaxxon the initial lives number is 4)
. Go back to the game and loose a life.
. Enter in the cheat menu.
. Specify the number of lives you want to find in
"Scan New Value" field.
(for Zaxxon the lives number is now 3)
. In Add Cheat you have several matching Addresses
. Specify the Poke value you want (for example 6)
and add six new cheats with this address / value.
. Try them one by one to identify what is the good
one, while restarting new games and see if the
life number is 4 or 6. You will see that the good
address is 717D. You can delete all others.

The cheat is now activated in the cheat list
and you can save it using the "Save cheat" menu.

Let's enjoy Zaxxon with infinite life !!


You can write your own comments for games using the "Comment" menu. The first
line of your comments would then be displayed in the file requester menu while
selecting the given file name (roms, keyboard, settings).


You can modify several settings value in the settings
menu of this emulator. The following parameters are
available :

Sound enable :
enable or disable the sound

IRDA device :
type of IRDA device connected to PSP
It could be None, Keyboard (such as Targus)
or Joystick (see IRDA Joy section)

Speed limiter :
limit the speed to a given fps value

Skip frame :
to skip frame and increase emulator speed

Display fps :
display real time fps value

Render mode :
many render modes are available with different
geometry that should covered all games

Delta Y :
move the center of the screen vertically

Vsync :
wait for vertical signal between each frame displayed

Display LR led :
draw a small blue rectangle in top of the screen
when trigger keys are pressed

Clock frequency :
PSP clock frequency, by default the value is set
to 133Mhz, and should be enough for most of all


You can modify several joystick settings value in the settings menu of this emulator.
The following parameters are available :

Swap Analog/Cursor : swap key mapping between PSP analog pad and PSP digital pad
Auto fire period : auto fire period
Auto fire mode : auto fire mode active or not

See IRDA-Joy section for other parameters description.


This version of PSPColem supports IRDA-Joystick box
( see for all details ).

IRDA mode : type of DB9 device connected to the "Irda Joystick box". It could be None,
Joystick, Single or double paddle.
IRDA debug : enable or disable debug mode to display data sent by the "Irda Joystick box".

You can then define Irda Joystick box keys mapping to PSP keys. The default
mapping is the following :

Joy Up : Digital Up
Joy Down : Digital Down
Joy Left : Digital Left
Joy Right : Digital Right
Joy Fire : Cross
Paddle 1 + : Analog Right
Paddle 1 - : Analog Left
Paddle 1 Fire : Cross
Paddle 2 + : Analog Up
Paddle 2 - : Analog Down
Paddle 2 Fire : Circle


It has been developped under Linux using gcc with PSPSDK.
To rebuild the homebrew run the Makefile in the src archive.

Change log (1.3.1):
- This version supports IRDA-Joystick box designed
by my good friend Buzz ( see ).
Schematic and PIC source code is provided in contrib folder.
- Add "IRDA joystick" device support for both
DB9 Joystick and Atari Paddle
- Add menu for IRDA joystick settings and keys mapping
- Add option to choose between IRDA devices (keyboard or joystick)
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