I have made some progress on my IBM 1410 FPGA implementation:
- Communication between the FPGA and PC Support Program is now over UDP
instead of USB/Serial
- Tapes can now read/write reliably in non-overlapped mode
- Diagnostics can be loaded and run from tape
- Some tape issues still remain
See
https://www.computercollection.net/index.php/ibm-1410-fpga-implementation/
(especially the last three entries in the list.)
JRJ