Victor HC-80
This page was last modified 08:55, 13 April 2019 by Rderooy. Based on work by Gdx and Mars2000you and others.

Contents

Description

Computer

The Victor HC-80 was manufactured by JVC (Japan Victor Company) and released in 1986.

The HC-80 was aimed at the Japanese market and features a Japanese keyboard. It is available in black.

Brand Victor
Type HC-80
Year 1986
Region Japan
Original price ¥84,800
RAM 64kB split between slots 0-0 and 0-2
VRAM 128kB
Media MSX cartridges
Video Yamaha V9938
Audio PSG (YM2149 integrated in MSX-Engine S3527)
Chipset Yamaha S3527
Extras Built-in software Tinysynth and Tinygraph, reset button

Firmware

The firmware is launched automatically when you boot the machine. Bypassing this software on startup requires the user to press the DEL key during boot until a Beep sound.

It includes 3 options: access to MSX-BASIC, Tiny Synth (that uses the MSX keyboard as music keyboard), Tiny Graph (a graphical application to make three different kinds of charts: pie, bar and graph).

It seems that Tiny Synth was also sold as apart cartridge. It can be viewed as a simplified version of Super Synth.

Pictures

Computer

Victor HC-80
Victor HC-80 label
Victor HC-80 underside
Victor HC-80 box and content
Victor HC-80 detail
Victor HC-80 back

Firmware

HC-80 Main Menu
HC-80 TinySynth
HC-80 TinyGraph Style Selection
HC-80 Pie Chart
HC-80 Pie Chart Menu
HC-80 Bar Chart
HC-80 Bar Chart Menu
HC-80 Graph Chart
HC-80 Graph Chart Menu

Specifications

The HC-80 is an ordinary MSX2 without superimposing capability. The CPU is an Z80A processor from Zilog or Sharp (LH0080A) at 3.58 MHz and an MSX-Engine from Yamaha (S3527).

The 64kB RAM is split in half between the slots 0-0 and 0-2, a configuration that can cause poorly written software to crash. Also, with this layout, the POKE-1,(15-PEEK(-1)\16)*17 trick to workaround buggy software that does not handle subslots properly will not work on this machine. So try BMMS instead if you have a memory expansion with Memory Mapper even if his tool doesn't work for MSX-DOS with several floppy disk drives when the internal Ram is in a slot 0 extended.

Slot Map

Slot 0-0 Slot 0-1 Slot 0-2 Slot 0-3 Slot 1 Slot 2 Slot 3
Page C000h~FFFFh Upper
32kB RAM
Cartridge
Slot 1
Cartridge
Slot 2
Page 8000h~BFFFh Firmware
Page 4000h~7FFFh Main-ROM Lower
32kB RAM
Page 0000h~3FFFh Sub-ROM

Connections

  • RGB21 output
  • Monitor output
  • RF output
  • Tape recorder connector
  • Centronics compatible Parallel port for a printer
  • 2 general connectors (joysticks, mouse, paddle controllers, ...)
  • 2 cartridge slots