Minimum size and current consumption board 48k
ZXNet echo conference «hardware.zx»
Hello RamTop
Leningrad is at the forefront of the entire planet. Probably boards on 216 matrices are still eating
less, but it will be more difficult to dig them up. And you can assemble Leningrad yourself.
Hello, All
Hello guys. My friend started making some device that
will manage 48 spec. Power will be from the battery, the device will
mobile. I'm interested in boards that, if possible, meet the criteria for the minimum
current consumption and, if possible, with minimal dimensions and weight. What can you do
advise, since in my life I have dealt only with “Leningrad” boards,
and . It is possible to purchase a suitable board by mail if
something will be proposed and details discussed.
A music processor is not required, nor is a disk drive controller, the main thing is
a working keyboard/cassette player port, preferably a ROM in the socket.
I look forward to your recommendations and suggestions. :v2_conf3:
Hello fan
I had a 48 k board based on ka1515xm1216 - 13 chips
size - about the size of a pack of Belomor :v2_smoke;
Can; fit one ka1515xm1216
Hello Orionsoft
Ori> I had a 48 k board based on ka1515xm1216 - 13 chips
Ori> size - about the size of a pack of Belomor :v2_smoke;
Ori>;
Ori> I can fit one ka1515хм1216
T34VG1 are sold at www.anion.ru in Moscow.
Hello, CHRV
CHR> T34VG1 are sold at www.anion.ru in Moscow.
so you should buy something as a souvenir (I want it too) :)
Hello Ronin
> I had a 48 k board based on ka1515xm1216 - 13 chips size
> - with a pack of Belomor I can fit one ka1515хм1216
Never heard of ka1515xm1216. This is one LSI that has a large
part of the logic from Speck? A long time ago, in a shaggy 95, I once saw him at the market
The Spectrum is also approximately the size of a pack of cigarettes. He looked like a Dandy -
a small board, in the middle a crystal filled with epoxy and a couple of connectors for
keyboards and other peripherals. Can I see a photo of such a board? Is it possible
mail order? We are interested in the possibility of connecting to the data bus and
address bus (you must have at least one 8-bit I/O port,
it is planned to connect IR23 to implement the port). If you can, tell me,
How can I get a full-fledged port on the Spectrum with little expense? Another device in
in the future it will work according to the program programmed into the ROM. Therefore I would also like
be able to replace the ROM multiple times on the board.
I would like to hear advice from knowledgeable people who have encountered such
task. :v2_conf2:
Hello RamTop
Ram> Is it possible to purchase by mail? We are interested in the possibility of connection
Ram> to the data bus and address bus (you must have at least one 8-bit
Ram> input/output port, it is planned to connect IR23 for implementation
Ram> port). If you can, tell me how to withdraw it with “little blood”
Ram> full port on Spectrum?
vg1 or hm1 or whoever else :) contains the main heap of m/s -
video controller. If your task does not include displaying an image on a TV screen -
IMHO it’s not worth making a fuss and installing Z80 - percent, 62256 - 32kb of RAM, 27xxx -
x kb of ROM and resolve them using the simplest logic (LL1, LH1...). And there is also
all sorts of microcontrollers :)
The simplest port - what's the problem, IR23 + LL1/LH1 to taste for decryption
simple address (IORQ, WR, A2 are acceptable). If you need several ports, Mona BB55
screw it on - but it's not for everybody :)
Hello Ronin
Ram> Can I see a photo of such a board?
Search the "List of Domestic Iron".
On my website I also have a couple of portraits of boards for the KA1515ХМ1 216 chip (aka
T34VG1) . What is called PLM-X is terribly small in size, and it can be
Roll it with an iron, if necessary I can throw photo templates.
Regarding the port, Ronin was just right - use BB55, it’s both bold and both
the sides are furious, and most importantly, the 216th matrix decrypts all the necessary ports for
I’ll take off the work (because that’s what was intended). See the BB55 connection diagram where
ATAS48k circuit, list of ports in the Baltic circuit (I think in the article about the controller
disk drive).
Hello fan
In the "List of Domestic Iron" you need to look for Sirius, there should be a photo of the pata,
diagram, frame, box :) The board is even smaller than PLM-X, but the tracks are denser
and thinner.
Hello fan
In the "List of Domestic Iron" you need to look for Sirius, there should be: photo of Pata
, diagram, case, box :) (unless of course these attachments were nailed down) The board is even
smaller than PLM-X, but the tracks are denser and thinner.