The first OPEN-R based prototype. The No. 6 prototype walks on four legs like AIBO, but by replacing the hind legs and tail with tires, we made it move as a wheeled mobile robot. This prototype was produced in the many for demonstration Soccer tournaments so Masahiro could set up the RoboCup ahead of the 110's finalisation. OPEN-R IC chips are contained in the head and legs, and the CPU of the core unit can recognise what kind of configuration the robot is by communicating with the OPEN-R IC of each unit. 
OPEN-Rベースの最初のプロトタイプ。6号機はAIBOと同様に四足歩行だが、後ろ足と尻尾をタイヤに置き換えることで、車輪付き移動ロボットとして動作するようにした。このプロトタイプは、110の完成に先立ち、正弘氏がロボカップへの参加を準備するため、サッカー大会のデモンストレーション用に製作された。頭部と脚部にOPEN-RのICチップが内蔵されており、コアユニットのCPUは各ユニットのOPEN-R ICと通信することで、ロボットの構成を認識することができる。
The no.6 prototypes were unveiled at the 2nd RoboCup in Paris. They also participated in the Sony Legged Robot Exhibition, a soccer game made up of robots loaned to three universities and equipped with development software. The software was held on PC Cards that would slot into the robot. There was also a USB port hidden under the back plastics.

Until this time, they were chasing orange balls instead of pink balls.
6号機のプロトタイプは、パリで開催された第2回ロボカップで公開されました。また、ソニー脚型ロボット展にも参加しました。これは、3つの大学に貸与され開発ソフトウェアを搭載したロボットで構成されたサッカーゲームです。ソフトウェアは、ロボットに挿入するPCカードに保存されていました。背面のプラスチックの下にはUSBポートも隠されていました。
それまでは、ピンクのボールではなくオレンジ色のボールを追いかけていました。
Modular Design
Later AIBO Robot prototype with limb modules ejected. This modular structure was later kept for 1xx and 2xx series production models but later abandoned for 3xx and ERS-7 robots. The large object on the right is an optional wheeled module which the AIBO prototype could use instead of legs. The team developed this to demonstrate OPEN-R framework's ability to hot-swap parts and adapt to new configurations on the fly.
Colourshift Prototype
Identical to the others of its model, this one features a cool colour-shift paint job. They are well known to the early-era Aibo fans as this unit was often bought to fan events around the world by Sony staff.  It is also often displayed at exhibits alongside other prototypes. The serial number sticker appears to say 'S/N 1012'. 
The paint used on this prototype is MAZIORA Trapezium, which is related to the paints used on the ERS-210 2nd Anniversary aibos.
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