the cutting room mirror

Speed Racer (Plug & Play)

This Speed Racer plug & play unit was notable for being bundled with an inflatable replica of the Mach 5.

Such immersion.

Factory Test Mode#

Booting the game while holding A + B redirects the player to a series of test functions, which includes RAM, ROM, and EEPROM checks, as well as graphic, audio, and input tests, in this order. Each screen can be advanced by pressing Start / Select, save for the input test screen, from which there is no way to exit outside of resetting the console. After all buttons are pressed, the background will flash red.

(Source: Imhereforobscurestuff32)