|
|
27C256 EPROM |
x 1 | |
|
|
IC socket (28 pin) |
x 1 | |
|
|
100nF capacitor |
x 1 |
|
KiCad 9.0 |
Exelvision ROM Cartridge (32KB)
The French Exelvision computer from the 1980s was a bit of an oddity as it was the only computer to utilise the Texas Instruments TMS 7220 microcontroller for its CPU.
As with a lot of machines from the time it utilised a ROM cartridge system, including for its BASIC language - without the cartridge the machine was not usable.
I figured out the ROM pinout as the cartridge port was connected to a 2KB SRAM and the gate array.
I then designed two versions of the cartridge - this 256kbit version that can be used for a single 32KByte ROM, and a 4Mbit version that can hold 16 ROMs.
Exelvision ROM Cartridge (32KB)
Project images are for reference only. Actual production is based on the manufacturing files on the project page.
Please review the designer's notes (e.g., PCB thickness) and select the appropriate options.
PCBWay is not responsible
for issues caused by unsuitable parameter selections.
For more important ordering information, please refer to
Read More
Raspberry Pi 5 7 Inch Touch Screen IPS 1024x600 HD LCD HDMI-compatible Display for RPI 4B 3B+ OPI 5 AIDA64 PC Secondary Screen（Without Speaker）
BUY NOW
- Comments(3)
- Likes(1)
More by Brett Hallen
-
Exelvision ROM Cartridge (4Mbit)
The French Exelvision computer from the 1980s was a bit of an oddity as it was the only computer to ...
-
2732-to-2764 Daughterboard
A very simple board designed to allow two different BIOS ROMs to be installed in the Osborne 1 compu...
-
Troubleshooting Joypad for MSX
I've been working on designing "troubleshooting" keyboards for various computers - it is difficult t...
-
Home Internet Router Rebooter
Our broadband Internet router will occasionally drop off the Internet. This is easily solved by powe...
-
Z80 CPU Breakout Board for Logic Analyser/Analyzer
A logic analyser is an invaluable tool for diagnosing computer faults but I find myself hesitant to ...
-
8080A CPU Breakout Board for Logic Analyser/Analyzer
A logic analyser is an invaluable tool for diagnosing computer faults but I find myself hesitant to ...
-
Exelvision ROM Cartridge (32KB)
The French Exelvision computer from the 1980s was a bit of an oddity as it was the only computer to ...
-
Matra Alice/Tandy TRS-80 MC-10 Internal 8KB RAM Upgrade
BackgroundThis design is based on the work that Daniel Tufvesson documented on his blog for the Tand...
-
BBC Master Compact Floppy Interface Board
The BBC Master Compact (MC) computer has a separate unit (Disk Drive & Monitor Stand) that house...
-
Programmable Mist Maker - XIAO / QT PY Extension
1147 2 1 -
RadioHAT - Raspberry Pi radio development platform
957 0 2 -
-
-
-
-
ARPS-2 – Arduino-Compatible Robot Project Shield for Arduino UNO
3381 0 6 -
A Compact Charging Breakout Board For Waveshare ESP32-C3
3997 3 8 -
AI-driven LoRa & LLM-enabled Kiosk & Food Delivery System
4389 2 2
