Z3660 is an Amiga 4000 CPU accelerator board based on A3660 and Z-turn FPGA board.

Compared to A3660, Z3660 has some key differences:

1. Z3660 accelerator board can only use 060 CPUs. This could be changed in the future, but at this time, only 060 is supported.

2. If Z-turn FPGA board is NOT used, then you get a simple A3660. The only difference is that all A3660 PLDs are replaced by a XC95144XL-10TQ144 CPLD. It could be possible to use 060 up to 100MHz, but only 50 MHz and 64 MHz has been tested. A board with 128 MB of CPU RAM is in the works (to be connected at Z-turn sockets).

3. If you use a Z-turn FPGA board, then you can add 128 MB of CPU RAM (DMA compatible), 256 MB of Z3 RAM (not DMA compatible), RTG 16bit, Ethernet, AHI and MHI. Also there is a SD to SCSI emulation for using raw RDB disk images (USB storage maybe in the future). And of course, you can use a 68060 rev6 at 100 MHz.

Main branch. Z3660 with Z-turn FPGA

This main branch has everything you need to build a Z3660 with Z-turn FPGA.
If you want to build Z3660 without Z-turn FPGA, please go to wo_FPGA branch. The board is the same, but the CPLD firmware and BOM are obviously different.

Current version of Schematics is v021. It has all fixes needed by v02 to have DMA compatibility (tested with ReA4091 as bus master), so you can build it.

The exact model of Z-Turn board you will need is: MYS-7Z020-V2 ( mouser https://www.mouser.com/c/?q=MYS-7Z020-V2-0E1D-766-C-S ).

v0.2 Z3660 without FPGA

v0.2 Z3660 with FPGA