Here's a BRIEF overview of Carnage Heart (including programming the
chipset):
1. There are 2 CDs with the game. One is the game itself and one is a
fairly impressive almost 30 minute non-interactive walkthrough of the
game's menus and such.
2. There are 2 manuals with the game. One is the game manual with all the
menus and options explained and the other is a programming strategy guide
(Yeah, there is a lot of flexibility to the programming...but it's not
that hard to do...just hard to do well)
3. The basic idea of the game is to design a mech (called an overkill
engine or OKE for short) to battle a corporate conglomerate's mechs on the
moons of Jupiter (The reason for this is explained in the manual and FMV
intro to the game). The design involves choosing a body type (There are 4
basic body types and 3 variations of each body trype for a total of 12
types of mechs), equipping your mech with a main and a sub weapon, picking
from various types of armor, choosing an engine, a gas tank and  a CPU
(there's more...but you get the idea)
4. The programming is icon based and fairly straightforward. It is easy to
program the mech, but not so easy to program it well. There are many icons
available (40 to start and more are added as you negotiate and invest in
better stuff) and most of them are variable in that you can change the
parameters (using a sliding scale). You are programming the chipset to
tell the mech how it is to react during an encounter with an enemy mech
(or mechs). Everything from checking the location of the enemy, your own
internal temperature (you don't want to overheat), damage taken, available
ammo, location of friendly units (don't want to shoot the good guys!),
obstacles, and the enemy's incoming missles, lasers, etc are all able to
be programmed in the chipset.
5. Once the chipset is "done", you get to test out the program on a test
battlefield. You can watch the program's flow with a little chart that is
in the corner of the screen as the test runs. Fairly easy to spot a loop
or see where the program is not working and go and tweak the chipset to
get better results.
6. After you have fully tested and approved your mech...then you can
actually go play the game!! The game involves both tactics and strategy as
you have to take enemy bases, run a production line (You have to
manufacture both your mech designs and ammo), negotiate with one of 6 arms
dealers (who have new body types, weapons, information about the enemy,
etc), form and deploy new units, and generally manage your armies. 
7. Everything is selectable with a mouse-like arrow that is easily
controlled with the standard Sony controller.
When you actually encounter an enemy on the screen, your chipset will take
effect and you just watch the results (although you can switch views and
camera angles as the battle rages on). If you want a game where you abng
the buttons to fire and duck, you will not like Carnage Heart...but don't
underestimate the fun of watching a realtime 3D battle with your creations
battling those evil mechs...it IS fun (and doesn't look like it will
boring).
I'd highly recommend this game for any strategy lovers out there.
- N. Brown