The SD-Shield is a mass storage device designed by Bob Applegate for Corsham Technologies. He named it SD/RTC Card. Based upon an Arduino Shield, an SD card interface and RTC are made available to a computer like KIM-1 or 6800 based machines.
Bob developed supporting KIM-1 software called XKIM, as loadable on a standard KIM-1 or integrated in the KIM Clones and Memory expansions.
Corsham is no more, but you can still build one yourself by visiting Eduardo Casino’s remake or buy one ready made with a Pico at RetroSpy Technologies.
Eduardo also made a PAL-II adapter for the shield.
The main functions of the SD Shield are to allow programs access to files on the SD card and get/set the time on the Real Time Clock.
The interface to the SD Card is described in the Remote Disk Protocol Guide.
The SD Card Shield is connected to the second RRIOT
The SD card Shield and the KIM-1 Simulator
The SD Card shield is emulated in the KIM-1 Simulator since version 2. It used the second RRIOT PIA ports, so the LEDs and switched on the main windows are disabled when in use.
The emulator makes the SD card available as a folder on the disk of the computer, from now on called SD Card folder. You can place any file there of interest to the SD Card software emulated.
To start using the SD Card Shield go to the menu settings:
xKIM an Extended KIM Monitor
http://retro.hansotten.nl/uploads/corsham/xKIM%20Manual%201.6.pdf
https://github.com/eduardocasino/xKIM
CP/M-65
XKIM
