Table of Contents
WiFiStation for Cidco MailStation
WiFiStation is an ESP8266 WiFi module board that connects to a Cidco MailStation Z80 computer. It allows programs to be uploaded to the MailStation over WiFi/HTTP or USB serial, and can act as a WiFi modem.
Note: WiFiStation requires programs on the MailStation to be written to use it, and does not replace or remove any standard analog modem functionality on the MailStation.
WiFiStation has been tested with the Cidco MailStation DET1/DET1A (also called the Mivo/MailStation 100, or eMessage). Other models of the MailStation such as the 120, 150, 200, 250, and 350 have not been tested.
Purchasing / Building
The WiFiStation can be purchased on Tindie as a full, unassembled kit with optional case.
WiFiStation's firmware, schematic, board design, and enclosure are all available on GitHub under an ISC license. You are free to modify any of it.
- If your WiFiStation came as an unassembled kit, you must first assemble it.
- Plug in your WiFiStation to the MailStation's printer port and connect a Micro USB cable between the WiFiStation and your computer. You'll only need it connected to a computer for this initial setup.
- Connect to the USB serial device at
8-n-1) with some terminal software like
screen, etc. Do not use hardware flow control (DTS/CTS).
Enter then type
ATand press Enter. You should get an
OKresponse. If not, check the troubleshooting steps.
- Connect the WiFiStation to your wireless network with
AT$SSID=followed by your network name, such as
AT$SSID=exampleand press Enter.
- If your network uses encryption, enter
AT$PASS=followed by the passphrase, such as
AT$PASS=hunter2and then press Enter.
ATIEnter and you should see
WiFi Connected: yes. If not, wait a few seconds and issue
- To check for a new firmware update, type
AT$UPDATE?. If a newer version is available, you can update with
- If you want to enable the HTTP web server, type
AT$HTTP=1followed by Enter. Note that there is no authentication required on the HTTP server. You should now be able to reach it on your network by putting its IP address (shown in the output of
ATI) in your web browser.
- Save your settings with
- To connect to a telnet host, issue
ATDT hostnamesuch as
ATDT klud.geand then Enter.
- Assembling a WiFiStation
- Hardwiring to optionally get power from the MailStation
- Installing WSLoader to get Z80 code/programs running
- Using sendload to upload programs from a command line over a USB cable
- Using the HTTP interface to upload programs over WiFi
- Using Flash Loader to permanently store programs
- Parallel Protocol for adding WiFiStation support to your program
Programs with WiFiStation Support
- YouTube - Tim Morgan: Adding WiFi to Z80 Portable Terminal from 1999 covers assembly, installing WSLoader, and loading msTERM
All LEDs on the Feather Huzzah will flash briefly upon connecting power (micro-USB or a battery) and then turn off.
If the red and blue LEDs on the Feather Huzzah alternate flashing ten times, that means it failed communicating with the MCP23S18 SPI chip. Either the chip is not correctly plugged into its socket, it is plugged in backwards, or the chip needs to be replaced.