An overall description of the logic
The RLV12 was a disk controller for PDP-11 systems that supported up to four RL01/02 disk drives.
The RLV12 Emulator emulates a RLV12 Q-Bus disk controller in a PDP-11 Systems with up to four units attached. Each unit either emulates a RL02 or a RL01 disk drive
The schematic of the Q-Bus version of the RLV12 Emulator with some additional information
Here you find the BOM and the building instructions in case you want to build your own RLV12 Emulator
In this section I show how to format a SD-Card and prepare it to be used in the RLV12 Emulator
The RLV12 Emulator has a built-in logging function that stores all controller activities in a circular buffer in the RAM of the microcontroller
In the meantime the MCU firmware has changed a lot and therefore I wanted to give some update about revisions, bug fixes, open issues and enhancements