Hudson Soft - AKA “Project Tetsujin”, AKA “Hudson’s 32-Bit Prototype System”
The "IronMan" was Hudson Soft's prototype board for what later was believed to have been redesigned to become the PC-FX. Created by the same designers as the PC-Engine, the “IronMan” was sold to NEC HE in the early 1990’s, and shown to the public in 1992.
The prototype board had a 25MHz RISC processor and a custom developed chipset, a HuCard type port in the front, another port beside that for some other device, Left/Right Audio jacks, and video hookups. To the rear of the board, a video cord is connected to another video output, and to the right of that, a control port which fits the PC Engine control pad is connected. Then, to the right of that, is what appears to be some sort of expansion port. Three other connections are also found in the back which are unknown for what they are used for. The dimensions of the "IronMan" were approximately 12x12in.
This was the last piece of hardware that Hudson Soft’s hardware team developed (with previous designs being the PC-Engine line of systems and the Sharp X6800).