The Replay Board
The Replay board is a high quality base platform for the development and usage of “cores“.
A core can be thought of as a hardware model that closely recreates the hardware of a specific home computer (Amiga, C64…) or arcade machine (Pac-Man, Phoenix…) and runs on the on-board Xilinx FPGA.
Beyond the hardware, the Replay also includes a comprehensive framework library and firmware to aid developers with core implementation and reduces the maintenance burden of supporting future replay hardware versions.
The Replay also provides ample opportunity to expand the hardware with various daughter boards for specific applications such as the 68060 Daughter Board currently in testing.
The Daughter Board
The 68K Daughter board provides a socket for an optional 68060 CPU and 128MB local/fastram for use by the 68060.
A floppy drive can also be attached to the daughter board (for use with supporting cores), making this an ideal upgrade for Amiga / AtariST enthusiasts.
In addition, the board expands the Replay’s I/O capabilities with a second SD card slot (dedicated to the FPGA), *Ethernet and *USB ports, a real time clock, *audio in socket (24-bit 96KHz stereo ADC) and Midi I/O interface.
* Audio In Record & Sampling will be driver and core dependent.
* Ethernet consists of a 100Mbit controller.
* Dual-port USB 2.0/Hi-Speed host controller.
Here’s a list of recommended parts and where to get them. Unfortunately the Replay board is out of stock and discontinued, but fear not, the Replay 2 board is in the making and will hopefully be ready Q1 2018. (This version will also include USB Ports for HID Keyboards & Mice).
(No daughter board)
(More Coming soon)
Unboxing and Review
Amiga RTG Test
Tiny size of 140x100mm, fits any mini-ITX cabinet.
Video output buffered by line driver with programmable filter. Option for SVHS/Composite video out using dedicated coder.
Expansion slot for JAMMA expansion board, MC68060+Ethernet board, etc.
Large Xilinx FPGA (1.6M Gates).
ARM System controller.
64 MB DDR2 DRAM. 48MegXtraRam+16MegBase ram.
High quality video output including DVI and analogue output.
3 channel programmable clock generator – can generate exact base clocks for PAL/NTSC Amiga for example.
Six layer PCB for good signal integrity and stability.
SD slot, DVI out, USB*, PS/2 and serial connectors.
Wolfson HI-FI quality audio DAC.
*The Internal USB connection is for connection to a host PC only.
Cores for your FPGA Replay
Although this project started out for recreating arcade games, I wondered back in 2003 if it was possible to implement a complete home computer system. The available FPGAs were much smaller in those days, but a complete VIC20 still fit.
Now we have a large number of platforms ported, including 16bit systems such as the Amiga and Atari ST.
The focus is always on implementing the original hardware as accurately as possible, but optional improvements are available too, such as a higher speed CPU, and in the Amiga case more Chip ram, RTG graphics, and modern sound with AHI support.
The content is provided “as is” without any guarantees and for educational use only. Use it at your own risk! By accessing the files here, you agree to check the individual licenses found in these files and use them accordingly (or don’t use them at all). You can get more details on these downloads on the forum. If you can’t accept this, please don’t download anything.
The news archive is here.
The layout for the Replay 68060 board is complete and has been sent for manufacture. It adds 128MB of local RAM, USB, Ethernet, RTC as well as additional Midi and LED IO connectors. The picture below is a quick mock-up to see if the components actually fit :)...
The core news archive is here.
I've released a new version of the Amiga core (svn.fpgaarcade.com). New features : 48M XRAM mapped as Chip and all chipset DMA pointers support 64M addressing (optionally enabled in OSD / .ini file) CPU cache stable - 2 way I + D with full snoop. ~16000 AIBB...