What is the RLV12 V2.0 Emulator, how das it work and how it can be used.

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Already during the debugging of the RLV12 Emulator V1.0 I had big troubles to physically access the programming interfaces, like JTAG and ISP, as well to change the SD-Card. Also I got some feedback about the setup especially the fact that it used packages with very low pitch and devices that are hard to find.

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In the meantime I have updated the CPLD interface and the MCU firmware. Everything has changed quite a lot internally however the hardware remains the same.

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For reasons already mentioned in the previous post I decided to build a new version of the RLV12 Emulator. Although the first version is running well it has some issues I wanted to correct with a new design. This post gives an overview of the new design.

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The following describes the schematics, I use Eagle as CAD

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In this chapter I go into the details of the CPLD design

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All external interfaces, including the SD-Card slot are now brought to a break-out board that can be installed at a convenient place of your installation

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The following gives some guidelines how to build the Emulator
February 2020: Added some information regarding programming the MCU and CPLD

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The RLV12 Emulator comes with a serial port to control various features. In this chapter I give an overview of the interface and the commands implemented through the command line interface using the serial port.

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In this section I show how to format a SD-Card and prepare it to be used in the RLV12 Emulator

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The RLV12 Emulator has a built-in logging function that stores all controller activities in a circular buffer in the RAM of the microcontroller

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