Bally Computer System
Bally Computer System



Setname:  astrocdw   
Year: 1977
Manufacturer: Bally Manufacturing
Status: good  works
Type: Game Console
Parent: Bally Professional Arcade
Emulation info
Overall emulation:  good   
Color emulation:  good  
Sound emulation:  good  
Graphics emulation:  good  
Savestates:  supported   

Tech info
 Base hardware: (available in all slot configurations)
Z80 ("maincpu")cpu 1789772 Hz
Speaker ("mono")audio
Astrocade ("astrocade1")audio 1789772 Hz
Screen ("screen")raster horizontal 352 x 240 @ 60.054442
Media devices
cartridge ("cartslot") cartridge cart bin
Software lists

 Optional hardware: (available with specific slot configurations)

 Configure the slot options for astrocdw:
 Slot Value

Show detailed info about 'Slot Options' of this system
Slot options

NameValueCompatible device(s)
exp blue_ram_16kastrocade_br16

Romset info
ROM NameSizeCRC32SHA1Dump StateBIOS option
bioswhit.bin8192 6eb53e79d84341feec1a0a0e8aa6151b649bc3cf6ef69fbfgood

Was a video game console system made by Bally intended to take a bit of success of the new era of consoles, started by Atari VCS, in half of the 1970's. Has a BASIC cart to be utilized as a computer and 4 programs bilt in his bios.


* CPU: Z80 3.579 MHz
* RAM: 4 KB
* ROM: 8 KB
* Graphic Modes: 160 x 102 (Basic cartridge : 160 x 88)
* Colors: 8 (Basic cartridge : 2)
* Sound: 3 voices + noise & vibrato
* I/O Ports: Cartridge slot, 4 controller connectors, Expansion port, Light pen connector
* Media: Cartridges
* Number of Games: About 40 cartridges released
* Built In Software: 4 built in programs (Gunfight, Checkmate, Calculator, Scribbling)
* Peripherals: 2 additional controllers, audio cassette interface, RAM expansions, Computer expansion, light-pen
* Controllers: 2 pistol shaped controllers with 1 trigger and a short 8 directions joystick / analogic knob


Currently, MESS emulates both Bally systems

* astrocde [Bally Professional Arcade]
* astrocdw [Bally Computer System]

Both drivers support cart dumps in .bin format, using the "cartridge" (cart) device.

Loading the Astrocade driver without a cartridge image will allow you to use the four built-in programs.


Games are controlled through the controller that has a 1 trigger and a short 8 directions joystick / analogic knob on its top

On the console there are an EJECT button, a RESET button and a 24-keys keypad (with a calculator layout, for use with the built in calculator program). Various Astrocade programs (BASIC, Music Maker, Machine Language Manager etc.) came with a special overlay
for the keypad, in order to easier remember the function of each key. The keypad layout is the following



7 8 9 x

4 5 6 -

1 2 3 +

CE 0 . =

Known Issues

To the best of our knowledge, full compatibility, aside from Bally Basic tape support.

History and Trivia

The game console commonly known as the "Bally Astrocade" was never officially sold by that name, having originally been released by Bally Manufacturing in 1978 as the Bally Professional Arcade.

It was withdrawn rather quickly though, due to the success of the competing Atari VCS.

A group of Pro Arcade enthusiasts under the name Astrovision Inc., bought the rights to the Pro Arcade and reintroduced it as the Bally Computer System, including the Basic cartridge as a pack-in.

In 1982, the system and company was renamed Astrocade, once again trying to market it as a video game system. The system didn't last much longer, though; it was a product with a limited interest base even before the video game slump of the next few years.


* Bally Alley --

Edit the History info for this game.


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