Bit Corporation Bit90
This page was last modified 17:46, 19 September 2020 by Bodhi1969. Based on work by Gdx.

Contents

Description

Bit90 is a computer which is ColecoVision compatible. Power supply is external. It is available in two colors (white with black keys or silver with green keys). It doesn't support software for Adam.

An adapter for Atari VCS/2600 cartridge was sold separately, too.

Brand Bit Corporation
Type Bit-90
Year 1984
Region Argentina, Taiwan and maybe some other countries
Original price DM 598 (Germany)
RAM 2kB
VRAM 16kB
Media ColecoVision cartridges
Video Texas Instruments TMS9918A/TMS9929A
Audio Texas Instruments SN76489AN
Chipset
Keyboard layout {{{keylayout}}}
Extras Keyboard
Emulation

Gallery

BIT90 Computer
BIT90 Computer leftside
BIT90 Computer rightside
BIT90 Computer rear
BIT90 Computer PCB
BIT90 Computer box
Bit90 Power supply
BIT90 Computer pamphlet
BIT90 Computer pamphlet back

Specifications

CPU is a Zilog Z80 (Z8400A). Bit90's pamphlet says it has 18kB of RAM but in fact there are 2kB RAM (TMM2016AP) + 16kB VRAM (AM9016 x 8). Rom size is 24kB. It contains the BIOS and a Basic interpreter.

Data Recorder rate is 2400 baud. Joysticks ports are same as ColecoVision. Do not insert a ColecoVision controller into an MSX.

Connections

Links