I finally wrote the Am29000 CPU core needed by these games. Emulation of the math unit and 3D hardware soon followed.
The 3D performance of the system is a step above Hard Drivin' and co given that the 3D pipeline is implemented mostly in hardware. The average framerate is ~30fps as opposed to 15. Worth mentioning is the extra sound hardware that is used to generate LOUD explosions. It's like something from an analog synthesiser - there's two channels of white with pink noise passed through an SSM2047 VCF. I've included a slightly fudged but reasonable sounding simulation of it.
F-15 and BOTSS play ok but they're shameless quarter suckers, regularly pestering the player to pump in more credits to buy weapons, repairs, fuel etc.
Tank Battle (aka Super Tank Attack and Tank 3D) is a prototype game. It supports two players via split-screen. I can't find a way to disable the split-screen for single player though.
Source: philwip.mameworld.info
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