<wpwrak>
hmm. so the layout guys converted one of the ground layers of m1rc3 to a signal layer.
<wpwrak>
so we should look for parallel green-green lines, as they could have crosstalk. the light green power trace behind J16 has a dark green trace underneath it for a while.
<wpwrak>
and there's also green-green fun below the label "C225"
<Fallenou>
they removed a ground layer ?
<wpwrak>
and of course north and northeast of J27
<Fallenou>
I guess they know what they're doing since they do layout for graphics card, mother boards etc
<Fallenou>
at least they know better than me :p
<wpwrak>
looks promising, though. the routing of the dvi signals looks nice. i just hope trace length isn't nearly as critical as some of those data sheets want to make us believe
<wpwrak>
trust is good. control is better ;-)
<Fallenou>
I guess we won't be able to output 4k resolution anyway :p
<Fallenou>
4k is the new "HD" marketing term, it will soon pop on every package =) bigger bigger bigger !
<wpwrak>
4k was yesterday. now it's 8K UHDTV
<Fallenou>
8k OLED
<Fallenou>
\o/
<wpwrak>
if the folks at ITU have done a good job, then even 8K UHDTV will have some CGA-like fallback mode. like even USB 3.0 still includes good old low-speed. marketine people like this. "<B>USB <BLINK>3.0</BLINK> compliant ports</B> <FONT size="0.5pt">Low-speed</FONT>"
<Fallenou>
lol !
<Fallenou>
AFAIK USB 3.0 is so "different" than 2.0 they had to include a complete 2.0 host inside the 3.0 host
<Fallenou>
in order to keep compatibility
<wpwrak>
remember, they did just the same with high-speed
<Fallenou>
hum really ?
<wpwrak>
took years before the EHCIs started to disappear
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<wpwrak>
UHCI for full and low plus an EHCI for high
<Fallenou>
oh ok
<Fallenou>
then you have OHCI for both full low and high ?
<wpwrak>
they're in the same chip. with a switch for the signal lines. doesn't get much cruder ;-)
<wpwrak>
yes, low an high were always together
<wpwrak>
i.e., there's no USB 0.x that only does low-speed ;-)
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<Fallenou>
hop polled uart is working :)
* Fallenou
has a bios prompt working with irq disabled
<lekernel>
:)
<Fallenou>
ok exception handler is executed when I read from a non mapped address on real FPGA
<Fallenou>
right now exception handler disables MMU and prints "TOTO" and then return
<Fallenou>
it returns to the code which was previously running :)
<Fallenou>
so far, so good
<Fallenou>
now let's analyze existing mapping an re-map the faulty page
<Fallenou>
and*
<Fallenou>
not sure if I can retrieve the virtual address which caused the fault from the exception handler right now
<Fallenou>
let's commit a bit in order to show that progress has been made :p
<GitHub85>
[milkymist-mmu] fallen pushed 2 new commits to mmu: http://git.io/xScMQA