MiSTer FPGA Forum

It was only the v2 core that used the second thread. Now the v4 cores have a real blitter. Sorry about the mixup.

Re:open source SAGA core

Gunnar said he would open source the SAGA core in 2017 as Kolla's link indicates but it's tightly integrated with the 68080. The 68080's second CPU thread supplies the blitter emulation using the AMMX vector unit to supply much more speed than the MiniMig core could supply.

@rhester72 That's certainly above my pay-grade. I'm barely a software guy any more, though I have a grasp of gate layout and pipelining on the hardware end. If I had to do an MMU on an FPGA, I'd probably just do like the Apollo Team have done with their Memory Protection Unit. I think it's a pity that the Open Innovation Network requires Linux to b...

Would this 4-stage pipelined 68030 help? The open source version is deliberately hobbled by using a repeat shifter instead of a barrel shifter on the instruction fetcher and lacks caches in the open source version as well. The core could also be made smaller by adding a write port to block memory instead of using logic blocks to implement the regis...