8x TMS44C256 instead of 32xRU7 in ATM-T2+
ZXNet echo conference «hardware.zx»
Hello, do_se
do_> I missed something, are the panels so blue? this is for my interest
do_> designer...
Yes! But I'm afraid the problem is not in the memory, but in something else, it heats up a lot.
Hello, CHRV
CHR> Yes! But I'm afraid the problem is not in memory but in other things there are a lot
CHR> is heating up.
the problem itself is not in memory :-) mikruhi is normal, one might even say
excellent :-)
the problem is in the panels (yes, they are so blue :-))
their defect is that with warming up some of them (and over time all of them will)
The mikruha seems to be slightly spat out, but the contact still remains but is noticeable
less good and therefore more susceptible to interference from Bolshov
power consumption of 32 cases in this place on the board
Unsoldering these sockets is a pain in the ass and I won’t mess with the board
they will be perverted to solder sandwich sockets to the sockets, it’s also not that
:-)
I don’t have any complaints and there can’t be any, I just want to solve the problem
since I’m solving it :-) I’ll report the results with photos if necessary :-)
thanks again everyone
Hello Ronin
Ron> well, with the simm there is ALWAYS less soldering. even if 50re is a pity (if there is no
Ron> that pile of junk where 44256 is only TWO sims). I have the 155th series
Ron> a lot, and what - throw her into a spec who looks askance at 555 (1533 -
Ron> don't put less!) ?
Ron>
Ron> so I really speak out - grab and throw out 44256, put sims
Ron> then.
Ron>
Ron> and about the circuits - well, I don’t know, I actually look at such things at the computer and it
Ron> circuit, with a heated soldering iron, I decide how to do it. they told you that
Ron> as a first approximation - install a couple of buffers - and then you will see what
Ron> do.
Well, you're funny :-) about the 155th series, it's not about me, but about those who installed the board and
16 buildings instead of 6 :-) or even 10, but it was no longer 512k but 1 meg
:-) but the old thing was probably more convenient
and I have nothing against it :-) so it’s more convenient for me
Although there are Sims, I don’t want to spoil the rarity somehow, maybe they’ll mess it up somewhere else
:-)
so everything was clear about a couple of buffers and the topic seemed to be exhausted
thank you for participating, albeit in a somewhat strange way :-)
Hello, POIND
POI> unsoldering these sockets is a pain in the ass and I won’t mess with the board
POI> it will be perverted to solder sandwich sockets to the sockets, too
Well, if such a booze went on, then if I were you, I would stick the RUSHKI directly into the board
and the second row with a sandwich, it’s difficult for Romkin to damage the board, it’s made according to all the rules
for manual soldering, suction like cheap steel...
PS personally, while I was setting up 3-4 cases, I pulled it here and there... and at least the board
henna...
Hello, POIND
POI> the problem is in the panels (yes, they are so blue :-))
POI> their defect is that with warming up some of them (and over time all
POI> will) the mikruha seems to be slightly spat out in this case the contact
POI> remains but noticeably less good and therefore more susceptible
POI> interference from the large energy consumption of 32 buildings in this place
POI> boards
Well then, build a clamp! a pair of metal plates laid
textolite for insulation, holes in them and tighten with screws/bolts - nothing and
it won't pop out :D - it will also make the heat sink better :)
and if you wave a soldering iron, it really is - throw out the sockets (you come to
cell phone workshop and Grisha, unsolder the sockets with a hairdryer, here's 100 rubles for you. or
You solder it yourself with a hairdryer. or use a soldering iron to alternate them 2-3 at a time
contact (they are plastic) and solder this mess) and just solder in 41256.
understand that the web mgtf-a is one of the worst evils that can be in your
spec. 32 rubles is better :)
oh, now I came up with an even simpler idea - you just insert the handles into the sockets and solder them
them DIRECTLY TO THE PANELS! I'm serious.
Hello Ronin
Ron> oh, now I came up with an even simpler idea - you just insert the handles into the panels, and
Ron> solder them DIRECTLY TO THE PANELS! I'm serious.
What for then are all the panels?
Hello, rasmer
ras> Why then all the panels?
Well, the man turned out to have bad panels. he is going to these his 44256
solder too (although where is still unclear). so what difference does it make who is soldered -
41256 in sockets or fence the garden of schemes and the web of mgtf-a? especially
desoldering from sockets (later if necessary) is still easier for the board than
desoldering from the board.
Hello Ronin
Ron> well, the man turned out to have bad panels. he is going to these his
Ron> 44256 soldered too (though where is still unclear). so what
Ron> the difference is who to solder - 41256 into sockets or fence a garden of circuits and
Ron> web mgtf-a ? especially desoldering from the sockets (then if
Ron> necessary) is still easier for the board than desoldering from the board.
Ronin :-) we’ll assume that you’re not joking, but rather joking
:-) thanks
especially for you, when I’m done, I’ll take pictures and post them on
which will be clear that there is no garden and no cobwebs
:-) just 8 ozushek 44256 and 2 ir22 buffers on one scarf stuck in 2 of 16
There are 32 existing sockets (maybe less) with 1.5mm diameter contacts :-)
In this case, you only need to solder the board at a minimum, don’t touch it at all, but everything will work
much more stable, as I said, before this I made myself such a RAM from just
2x 44256 and one ir22 on an old, beat-up Pentagon :-) it’s true there
It wouldn’t have happened without a neat web, but it would have been impossible to do otherwise :-)
Hello, POIND
POI> I previously made myself such a RAM from just 2 44256 and one ir22
POI> old, battered Pentagon :-)
How was the last address bit trimmed?
(I cut the sim as 128k, but I don’t know how glucodromic it is)