Sanno SPCmk-III
This page was last modified 17:19, 28 June 2019 by Rderooy. Based on work by Mars2000you and Gdx and others.

Contents

Description

The Sanno SPCmk-III is the second MSX produced for the Sanno Institute of Management, a Japanese Institute, which had as its mission to computerize the Japanese schools. This program was lead by the Sanno Institute of Business Administration and SPC means 'Sanno Primary Computer'. 'mk-III' refers to the fact that Sanno had previously released two other machines, the first one was based on the (non-MSX) Sord M2 computer.

The Sanno SPCmk-III was manufactured by Casio. It's actually the same machine as the Casio PV-16 and was available only in black. It has 16kB RAM and one cartridge slot, does not have a printer port. This MSX1 computer has a chicklet keyboard that is said to not be very good and the keys are too small for everyday use.

The joypad keys are arranged in a circle and labeled 'Joypad 1'. Together with the TR1 and TR2 keys on the bottom left of the computer, these are equivalent to a joystick inserted into joystick port 1. Probably, only the games that use the BIOS routines to handle the joysticks are supported by these internal joypad, it includes the BASIC games using the STICK command. (need confirmation about it)

Apart from the 'Joypad 1' keys, the computer also features normal cursor keys aligned above the joypad keys to the left of the Home key.

It's possible to add two cartridge slots and the printer port by combining this computer with the Casio KB-7 expansion unit. This combination does not add extra RAM. The power supply is not internal, the provided AC power adaptor (AD-4110) is required if you don't use the KB-7 unit, which has its own power supply.

The Sanno computers were meant to be used by students. Some other educational software was also created for Sanno. For example: Sanno CG, a graphic editor in cartridge by Neos.

Brand Sanno (Manufacturer: Casio)
Type SPCmk-III
Year 1985
Region Japan
Original price
RAM 16kB in slot 0 (with or without KB-7)
VRAM 16kB
Media MSX cartridges
Video Texas Instruments TMS9118NL
Audio PSG (AY-3-8910)
Chipset none (separate IC's)
Extras Specific button keys TR1 and TR2, (with KB-7) third cartridge slot

Pictures

Sanno SPCmk-III
Sanno SPCmk-III underside
Sanno SPCmk-III label
Sanno SPCmk-III left side
Sanno SPCmk-III back
Sanno SPCmk-III right side

Specifications

The Sanno SPCmk-III is a MSX1 with a Z80A from NEC (D780C-1).

The pins SW1, SW2, -12V and +12V of the cartridge connector are not connected. In general, MSXs without a protection switch have pins SW1 and SW2 connected to GND. A few cartridges use SW1 and SW2 as GND and some cartridges need the -/+12V as for example the FM-PAC.

The power adapter input must be AC 100V, 50/60hz, 14VA. It produces a voltage of 10V and a direct current up to 800mA. The negative polarity is at center.

Slot Map without KB-7

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

Slot Map with KB-7

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

Connections

  • RF output
  • Analog sound output (mono)
  • Composite video output
  • Centronics compatible Parallel port for a printer (on the left side of the KB-7 expansion)
  • 2 general connectors (Joysticks, Mice, Paddle controllers, etc)
  • 1 cartridge slot (without KB-7) or 3 cartridge slots (with KB-7)
  • 1 cartridge slot (without KB-7) or 3 cartridge slots (with KB-7)
  • 1 expansion slot for KB-7 unit
  • AC power adaptor connector