This program is for testing the stability of Commodore 64 ethernet cards based
on the Crystal Semiconductors CS8900A chip.

Supported Ethernet Chips:
- Crystal LAN CS8900A in all revisions.

Supported Ethernet Cards:
- RR-Net, old and new versions
- The Final Ethernet (TFE), original and revised layouts
- FB-Net
- Net64
- 64NIC
- CCCC 64NIC+

Supported Platforms:
- All C64 models, SX-64 and all C128 models in 64 mode
- Retro Replay
- MMC64
- MMC Replay
- IDE64 v4.1
- 1541 Ultimate

See the ReadMe.txt file for further info and instructions on how to use it.

Very nice!
Have been thinking about doing something like this for years. Devia to the rescue!

Works perfectly on my FB-Net, IDE64 V4, and 64NIC prototype !

The Single-Step Pause (Shift-P) doesn't seem to function though? SPACE works for temporary pause.

SHIFT+P works, atleast it works here
Pressing P or SHIFT+P will pause (doesn't matter which SHIFT key). Pressing SHIFT+P again will send/receive 1 frame, display it and pause. Pressing P will then un-pause again.

Btw, you can see which SPEED the prg is currently running by holding down Q. The second byte displays current speed, where 00 is fastest possible, and 80 is slowest. The first byte is just a marker saying something about where in the NIC detection routine the NIC got detected.

Added a new version 0.5 to the top post.

Changes include improved (I hope) detection algo and support for even more ethernet implementations.
Some sprite enable/disable stuff got included as well as a simple function to test banking for the I/O space the NIC is mapped in.

See the ReadMe for further info.