Victor HC-30
This page was last modified 09:37, 2 June 2022 by Gdx. Based on work by Mars2000you and Rderooy and others.



The first Victor computers were essentially rebranded Yamaha MSX machines.

The HC-30 is the same as the Yamaha SX-100. It has a single cartridge slot on the right side. The power supply, also rebranded, is external - see Victor AA-C30.

This model was sold in black (HC-30 BK) or red (HC-30 RD). It was aimed at the Japanese market and features a Japanese keyboard.

Brand Victor (Manufacturer: Yamaha)
Model HC-30
Year 1985
Region Japan
Launch price ¥36,800
RAM 32kB (in slot 0)
Media MSX cartridges
Video Yamaha YM2220 (Texas Instruments TMS9918 compatible)
Audio PSG (YM2149 integrated in MSX-Engine S3527)
Chipset Yamaha S3527
Keyboard layout QWERTY/JP50on
Emulation ROM dump needed. See this thread for details


Victor HC-30 RD box and content (+ joystick not included)
Victor HC-30 BK
Victor HC-30 BK underside
Victor HC-30 BK left side
Victor HC-30 BK right side
Victor HC-30 BK box
Victor HC-30 PCB
Victor HC-30 PCB underside
Victor HC-30 VDP without shield
Victor HC-30 RD
Victor HC-30 RD label
Victor HC-30 BK back
Victor HC-30 56-pin cartridge slot
Victor HC-30 RD with power supply
Victor HC-30 manual
Victor HC-30 BK label


The HC-30 is a MSX1 with a Z80A from Sharp (LH0080A), a Yamaha YM2220 VDP and a Yamaha S3527 MSX-Engine.

The power supply (9V, + at center) is external. The unique 56-pin cartridge slot has 6 special pins named abcdef: a, b and d are shield, c is sound in, e and f are slotselect.

Pins -12V and +12V of the cartridge connectors are not connected.

Yamaha produced a slot expander for the SX-100 called the SX-101 Expansion box (launch price: ¥26,800), designed to be placed underneath the monitor. It is compatible with the Victor HC-30. This one delivers the -/+12V from its slots.

Slot Map without SX-101

Slot 0 Slot 1 Slot 2 Slot 3
Page C000h~FFFFh RAM Cartridge
Page 8000h~BFFFh
Page 4000h~7FFFh Main-ROM
Page 0000h~3FFFh

Slot Map with SX-101

Help needed
The below slot-map is an assumption, it needs to be checked on a real machine.
Slot 0 Slot 1 Slot 2 Slot 3
Page C000h~FFFFh RAM Cartridge
Slot 1
Slot 2
Page 8000h~BFFFh
Page 4000h~7FFFh Main-ROM
Page 0000h~3FFFh


  • RGB Monitor output
  • RF output
  • Video composite output
  • Analog sound output
  • Data Recorder connector
  • Centronics compatible Parallel port for a printer
  • 2 general connectors (Joysticks, Mice, Paddle controllers, etc)
  • 1 cartridge slot (with specific 56-pin connector, compatible with MSX cartridges except those that need -/+12V)
  • Power supply input (9V, 1.3A, plus at the center)

External links