Yamaha V9958


The Yamaha V9958 is a Video Display Processor used in the MSX2+ and MSX turbo R series of home computers and the "TIM" upgrade to the TI-99/4A. Also known as the MSX-Video chip, it is the successor to the Yamaha V9938. The main new features are three graphical YJK modes with up to 19268 colours and horizontal scrolling registers. The V9958 was not as widely adopted as the V9938.

Specifications

The following features were added to or removed from the Yamaha V9938 specifications:
On MSX, the screen modes are often referred to by their assigned number in MSX-Basic. This mapping is as follows:
Basic modeVDP modeMSX system
Screen 0 T1MSX 1
Screen 0 T2MSX 2
Screen 1G1MSX 1
Screen 2G2MSX 1
Screen 3MCMSX 1
Screen 4G3MSX 2
Screen 5G4MSX 2
Screen 6G5MSX 2
Screen 7G6MSX 2
Screen 8G7MSX 2
Screen 10G7 with YJK and YAEMSX 2+ and tR
Screen 11G7 with YJK and YAEMSX 2+ and tR
Screen 12G7 with YJKMSX 2+ and tR