VHDL CACHE ?

[Petari]

Well, I let that overclocking to you and troed. Same as with overclocking FDC chip for HD floppies - some can work fine at 16 MHz, some not. With aged machines it will be just worse. Time too look after that Altera Cyclone ...

[exxos]

I brought the later SMT MMU's from atarifreaks a while ago.. latest date chips, so all should have good chance to overclock good. Original PLCC MMU seems to work OK, so later production of MMU should be fine

Of course I need to find time to create MMU adapter PCB to use the SMT MMU.. Also need a small PLD to pack the GLUE logic also...

But my current booster design once I get working at 32MHz I will create new MMU PCB and use some spare IO pins on the booster PLD.. So CPU will run at 32Mhz and RAM at 16Mhz. Is the best solution I can do with the current custom ST chips.