Pioneer PX-V7
This page was last modified 13:56, 16 December 2021 by Mars2000you. Based on work by Rderooy and Gdx.



The Pioneer PX-V7 is a MSX1 computer, aimed at the Japanese market. It was meant for attaching to a LaserDisc player, and as such has superimpose capabilities.

The PX-V7 was available in silver with lilac keyboard keys. The separate keyboard has the reference AWX-291. The package includes the RF converter PX-RF7 for using on an NTSC TV.

It has been released almost at the same time as the silver version of the PX-7 and the provided manual is common to both computers. While the PX-7 was available in the big net of commercial market, the PX-V7 was sold to Japanese schools and used for educational purposes. The price of this computer is unknown.

Help needed
This machine seems to be identical to the PX-7. If you have a PX-V7, we would appreciate your assistance to check the inside of the machine. It would be especially helpful if you could dump the ROMs so they can be compared to the ones from the PX-7. If you are able and willing to assist, please let it be known in the forums.

Brand Pioneer
Model PX-V7
Year 1984-05
Region Japan
Launch price
RAM 32kB in slot 0
Media MSX cartridges
Video TMS9928ANL
Audio PSG (AY-3-8910)
Chipset none (separate IC's)
Keyboard layout QWERTY/JIS
Extras Superimposer, P-BASIC 1.0, sliders for volume level and mixing level, stereo LaserDisc sound, stereo PSG sound
Emulation ROM dump needed. See this thread for details


Pioneer PX-V7 box and content
Pioneer PX-V7
Pioneer PX-V7 box
Pioneer PX-V7 computer
Pioneer PX-V7 back
Pioneer PX-V7 keyboard
Pioneer PX-V7 back
Pioneer PX-V7 back
Pioneer PX-V7 with manuals
Pioneer PX-V7 label
Pioneer PX-V7 keyboard label


(based on Pioneer PX-7, need to be confirmed)

The PX-V7 is a MSX1 with a Z80A from NEC (D780C-1). The computer has 2 cartridge slots, one at the top and one at the rear. It doesn't contain an MSX-Engine.

  • Unit size: 420 x 323.5 x 70 mm (W x D x H)
  • Keyboard size: 420 x 171 x 47.5 mm (W x D x H)
  • Total weight: 8.3kg (with complete packaging)

Slot Map

Slot 0 Slot 1 Slot 2 Slot 3
Page C000h~FFFFh 32kB RAM Cartridge
Slot 1
Slot 2
Page 8000h~BFFFh
Page 4000h~7FFFh Main-ROM P-BASIC
Page 0000h~3FFFh
  • The P-BASIC ROM is a 8kB ROM - 4000h-5FFFh, and in same slot 07FFEh~07FFFh are addresses to access to expansion I/O registers.


  • RGB digital output (DIN 45326 type 8A)
  • RF Mod output (5 pin DIN, RF converter PX-RF7 is required for use with a TV)
  • Composite input/output (RCA) with hue adjust dial
  • Analog stereo sound input/output (RCA)
  • Analog mono sound output (headphone jack)
  • Keyboard connector (13 pin DIN)
  • Data Recorder connector (both DIN and mini-jack)
  • Centronics compatible Parallel port for a printer
  • 2 general connectors (Joysticks, Mouse, Paddle controllers, etc)
  • 2 cartridge slots
  • System control input/output 1 (mini stereo jack x2)
  • System control output 2 (mini mono jack)
  • System control output 3 (DIN 45326 type 8B)
  • Power plug for main power supply
  • AC power socket (for the monitor)

External Links