Re: RAM upgrade abandoned

Probably this is fastes conversatuion her ;-)


> Hi
>
> Roy wrote:
> >>you problably missed but there is a hack to add more
> flash,
> >>and from what Keith said, perhaps adding 4MB flash
> would
> >>let us use an uncompressed filesystem and get a few
> more
> >>CPU cycles from the units
> >
> > If you are talkink about the same page
> > http://www.wiresncode.com/projects/wireless/openap/
> > then you are wrong
> > this project REPLACES flash it does not add anything
>
> yes, but the basis to add more is there :-)

not exactly right it, this way is no good.
it is better to use similar flash types , else it will be hard to use.


> > this ap have 1mb as before.
> > This project had good idea how to avoid using sram but nothing
> else
> > and I still dont understand authors motivation to replace
> exsisting
>  > flash chip with aditional board forever.
>
> the original SRAM card was pricey, US$200 or so, and besides
> pretec US$65 one he made a cheaper alternative with spare
> parts he have. a good work!!

Yes I dont say everything he did is useless, but he can use this addon board
 to flash exsisting ship and remove it like I do,
Actualy his project was wery usefull for me, since I even cant get sram card
anywhere
and I wont pay 200$ for it when I ewen dont have laptop.
But I se similar addon board in diferent way
I flash exsisting chip and remove it. Now I think I could make
flash sram card if i would find pcmia connector

> > and about CPU cycles you still miss the point:
> > yes, maibe you will increase userspace response
> > but who cares about it?
>
> the unit is now only capable of about 350-450KB/s,
> but with original firmware it does more. so if unix
> turn the unit SLOWER, we must know the reason,
> don't we?

with original firware its capacity was 450 for me
and this is hostap driver problem
also you can squeze some speed by increasing cpu speed
it adds 50 kbytes/s for me (from 33 to 66)

> > it is not so slow anyway. it wont increase througput  at
> all.
> well, I have 486 notebooks with similar hardware
> running much better than eumitcomm board...

I suppose that you know that eumitcomm 33mhz equals
laptop 16mhz or (maibe even 8mhz but probably not)

>
> > and if you are still going to upgrade memory you should
>  > be ready to solder the same type chip on top of old flash
> > there wont be any upgrade cards
> [...]
>
> solder a header is OK, but do that on pins is a work
> I'd avoid, if I can, sorry
actualy this way is most simple it was recomended wery old time ago
to increase ram if old zx spectrum(sinclar) type computer
and even comercialy used
unfortunately smd chip is not very good for such things but still posiible
to bend once
--------------------------
I also was thinking about instaling ppoe, but afterall this unit dont have
enough memory
and speed also my servers are always so complex that such weak cpu wont
handle all jobs anyway.

just imagine what nust do at least simple server for inet sharing:
ppoe, firewall, trafic shaper, statistic logging, management.

I am more worried about stability, which is incredibly bad, watcdog is
useless at boot time,
and actualy useless everytime since needs to be togled unresonably fast.