AVT CPC-300
This page was last modified 12:18, 9 August 2019 by Mars2000you. Based on work by Rderooy and Gdx and others.

Contents

Description

The AVT CPC-300 is the adaptation for The Netherlands of the Daewoo CPC-300. It has an 'International' QWERTY keyboard.

This machine seems to have remained at the prototype level, with the Daewoo trademark instead of the AVT trademark (see picture extracted from Dutch MSX Computer Magazine 10) and was apparently not released, although it was planned.

Brand AVT (manufacturer: Daewoo)
Type CPC-300
Year 1987
Region the Netherlands
Original price unreleased
RAM 128kB in slot 0-2
VRAM 128kB
Media MSX cartridges
Video Yamaha V9938
Audio PSG (AY-3-8910)
Chipset Daewoo DW64MX1
Extras lightpen connector, reset button

Pictures

AVT CPC-300

Specifications

The AVT CPC-300 is a MSX2 that does not use a MSX-Engine but a custom IC DW64MX1 that includes the 8255 PPI, slot select circuitry, a memory mapper and various glue logic. The CPU is a Z80A from Goldstar (GSS Z8400A PS).

The main RAM is present on slot 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 cause this machine to freeze.

Slot Map

Slot 0-0 Slot 0-1 Slot 0-2 Slot 0-3 Slot 1 Slot 2 Slot 3
Page C000h~FFFFh 128kB
Memory
Mapper
Cartridge
Slot
Expansion
Bus
Page 8000h~BFFFh
Page 4000h~7FFFh Main-ROM
Page 0000h~3FFFh Sub-ROM

Connections

External links