[dgcx] has been working on reimplementing a PDP-10/x on an FPGA for the last 2 and a half years. This surprised us because we’re only hearing about this project now.
After designing three versions, [dgcx] eventually ended up with a one-FPGA implementation of a PDP-10 and an awesome PDF writeup. Although PDP-10 emulators do exist, this project isn’t an emulation – the system actually has the 36-bit word length of the original, implemented on five 4096 kilobit SRAM chips. This is a fully functioning replica, and even has CHAOSNET implemented with a small Ethernet controller.
Like the miniature Cray-1 on an FPGA, the only thing left to do is put the PDP-10 clone into an awesome case like the working PDP-1 replica. We imagine [dgcx] could get the digital models of a real PDP-10 fairly easily.
With very old computers, it’s very hard to find software to run on these machines. This was the same problem the builder of the tiny Cray had. If any Hack A Day readers know where [dgcx] could find some old DEC software, be sure to post something in the comments. Otherwise, he may just get started porting the first edition of Unix.