Pioneer TV Video Game Pack SD-R5

Historia

The SD-R5 was an RGB input which enabled the display to be used as an RGB monitor. It also had inputs for super impose and video which were intended to be used with the MSX PX-7 which was capable of super imposing graphics onto video and controlling certain Pioneer laserdisc players (LD-700 and LD-1100). Looking at service manuals it seems that the SD-21 and SD-26 also had the ability to control these laserdisc players, and the PX-7 had an input enabling this function to be daisy chained from the display through the MSX to the single input of the LD player.