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What is it

An implementation of the Acorn 6502 Second Processor for hardware development boards.

It can run at any integer clock speed, with maxima between 40 and 180 MHz (depending on the development board). The actual performance level is roughly two times the clock speed, if the board uses my own 65C02 core (which executes instructions in far less cycles than a real 65C02). Refer to the documentation for more details.

The supported development boards are :

• Terasic DE1
• Terasic DE0 Nano
• Terasic Cyclone V GX Starter Kit
• Terasic DE0 Nano SOC
• Altera Stratix III FPGA Development Kit
• Terasic DE10 Lite
• Altera Stratix V Advanced Systems Development Kit
• Terasic DE10 Nano
• Terasic Cyclone 10 LP Evaluation Kit

Use it

Ingredients :

• Your Acorn computer with Tube interface
• A supported development board (see above)
• My uploadable hardware design (see below)
• One or two (sliced up) flatcables (see instructions)
• A TubeSilencer (although a Terasic DE1 can do without)

Downloads (click to download, unpack, and read the ReadMe.txt file first) :

• Release 08 Feb 2021 (all development boards)