The QSIC is a QBUS card with an FPGA and SD cards that emulates the old DEC disk controllers and drives. A companion indicator panel is also available for those who want the blinkenlights.
This project has been split into separate repositories so that it works better with git. This repository primarily holds the Verilog code that runs on the FPGAs. It also holds the documentation and the paper I wrote on bus arbitration. Finally, just because there’s no more work being done on it, I’ve left the KiCad schematic for the wire-wrapped prototype here as well.
So, directories you might care about are:
| board-wirewrap |
KiCad design for the wire-wrap prototype board |
| documentation |
Programming Manual for the QSIC/USIC |
| papers |
A paper on QBUS and Unibus arbitration |
| verilog |
The FPGA code to implement the QSIC |
These directories, I’ll probably make go away at some point but, for now, I’ll leave them be.
| board-prototype |
KiCad design for a prototype board with 8641 bus transceivers (old idea) |
| board-qsic |
KiCad design for the QSIC hardware |
| board-smt |
KiCad design where I’ve been experimenting with discrete bus drivers |
| indicator-panel |
This directory is obsolete as the indicator panel has been moved to its own project |
Other QSIC-related repositories.
| QSIC |
The QSIC board |
| USIC |
The USIC board |
| Indicator Panel |
Indicator Panel PCBs and graphics inlays |
| Software |
The software that runs on the embedded soft processor in the QSIC/USIC (not yet started) |