Took a quick break from the new Replay build system today and tested a batch of replacement 503 ICs. They appear to work well, so I can ship the board back to it's owner and get some desk space back! You can see the new 40 pin module working on the board below. I've got some left in stock, contact me if...

Finally, after being stuck in Swedish customs for nearly a month (thanks PostNord), the PCB for my 40 pin Konami 503 ASIC replacement has arrived. I'm experimenting with an Atmel 5V CPLD on these, rather than the old Altera MAX7064 which is getting hard to get, and rather expensive. The PCB is double sided with a nearly solid ground plane on...

The final complete R1 & 68060 DB to ship Well, actually the last (I thought) Replay1 shipped years ago, but I've had one sitting around which failed production test. When a core boots up, the ini file for that core tells the software which files to upload into the FPGA, and optionally these can be read back to verify everything is...

Here at FPGAArcade we've always tried to reproduce retro hardware for preservation as accurately as possible. When I did the first Pacman design years ago it was quite easy as there were only a few custom ICs. I built some analysis hardware you can find way back in the news here to compare the ASIC with my CPLD clone on...

We've bought a number of Ultra96 boards which contain a similar FPGA to the target device on Replay2. This will kick start development, especially on the Linux side. I'm also designing a small add-on board with the video output devices we'll use on the real board. This will allow us to run up some cores and make sure we are...

Very rough CAD drawing to play with IO connectors Replay2 is now in PCB design. We are using a Xilinx Ultrascale+ MPSoC device which combines a fast FPGA and a 64 bit Cortex A53 cluster. The device is built on 16nm FinFET+ logic. The processor system runs up to 1.5GHz, and will have 64bit DDR4 memory (which can be shared with...

So first, I must apologise for it being quiet here news-wise. The active development is mostly on Slack now, but I will try and post updates here more often. So, Replay2 stalled. The issue was the excellent price/performance of the DE10 board (used in the Mister project) which is available for $130. While add on boards are needed, the total price...

Over the years there has been a lot of frustration about the lack of Replay boards. The main issue was the lack of quality control on components from China which caused a lot of rework effort. In retrospect, we should probably have thrown these away and built new ones.... I've been working with some contacts and have now learned enough to...