On Tuesday 18 May 2010 19:11:22 Philip Pemberton wrote: > Hmm. £35 (though no doubt that's excluding P&P). Not bad for what it is, > though how are you supposed to get VGA out of it? An add-on board?
There's no VGA on this board (and no SDRAM either to store the framebuffer). It's a much feature-reduced version, more a learning/experimental tool. Though it could make a nice small project to develop an add-on board with SDRAM and VGA (if there's enough IO for that). It could even run uClinux... > Attempting to access the SDRAM seems to frag the CPU. I think I need to > put a logic analyser on this thing... It's a shame Chipscope is a > pay-for option on Webpack :-/ You can also run a functional (RTL) simulation of your system. By the way, Milkymist already features a proven (i.e. even used in a NASA project) SDRAM controller, integrated with LM32... > > If this blocks you, it seems older versions of LM32 (like the one in > > Joerg Bornschein's soc-lm32) didn't tickle this bug. > > Going by the gitlog, it looks like he's *fixed* the bug. Could you point at the specific commit? > > Hmm... true. Checking that out, I found out it's just a documentation > > error. The positions of the X and U bits are reversed. > > That'll be the... 4th error in the LM32 Processor Reference Manual, then > (by my count). That document seems to contain more bugs than the average > ant farm! If you list them, I'll put them on the Milkymist wiki. I can also give you an account for you to edit pages yourself. Sébastien _______________________________________________ http://lists.milkymist.org/listinfo.cgi/devel-milkymist.org IRC: #milkym...@freenode Webchat: www.milkymist.org/irc.html Wiki: www.milkymist.org/wiki
