A drop of solder - ZS Scorpion 1024 circuit diagram.

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zы(C) Cardinal/PGC/BDA
__________________________________________

   Hello people! Today we will talk about
memory expansion Scorpion ZS 256 Turbo+
up to 1 meter. I’ll say right away that the one lying below
The article is not mine, but taken from the newspaper ZX LIGHT
#0C. Why is this, you ask? Because in
a couple of mistakes crept into the diagram, and the work
you won’t have it :( But fill the but-
this article was stolen from me, so I half-
I am quoting in full an article from ZX LIGHT #0C with
preserving all possible copyrichts, but
with minor corrections and comments
(in the text: Editor's note:) I built myself one
thing after I personally spoke with
About
possible glitches in the circuit. So, let's go...


(C) Timon & EraserAREAsoft
───────────────────── ─────────────────────
 Computer memory expansion
 ZS Scorpion 256 up to 1 MB.

   Despite the fact that many views
were skeptical (not excluding some
since then I myself) have expanded on the proposal
to cherish Scorpion's memory, I'm almost there
three months, I am the owner of a monster under
called ZS-Scorpion 1024 Turbo+.  And in
I'm currently typing this text in iS-DOS,
by loading a copy of the entire floppy disk onto RAM-
-DISK.
   Therefore, today we offer power
dealers of the above-mentioned company expanded the scheme
Memory storage up to 1 megabyte. Moreover, the scheme
this one is quite cheap and easy to implement
tions.
   The main detail of this whole scheme is 30
pin SIMM with a capacity of 1 MB. It's worth such a fi-
Govina within fifty rubles (especially
especially if you consider that for pC owners
This amount of memory didn’t fit anywhere :)).
If you don't want to buy it, find it
those somewhere three or four and stand-
thread SIMM from it. There you can also get
connector for SIMM, otherwise solder a bunch
wiring directly to the SIMM is quite a deal
dreary.

Editor's note: in Kemerovo you can have SIMM 1Mb
get it for 25 rubles, and 50 rubles from us
there is a working mother from the 386th with allbells and whistles and, of coz, several SIMMs -
we are in it.

   The remaining parts are also not de-
scarce or very expensive. You can get them
tear, for example, from an old board from Le-
Ningrad".

    So, the list of necessary parts:
 ┌────────────────────┬─────────┐
 │   SIMM 1Mb, 30 pin │ 1 │
 ├────────────────────┼─────────┤
 │   TM2  │ 1 │
 │   KP12 or KP2  │ 1 │
 │   KP11 or KP16  │ 1 │
 │   ИР22  │ 1 │
 └────────────────────┴─────────┘
 Mikruhi must be series 1533, but you can
install the 555th series.

Editor's note: it would be nice to get a toggle switch
to 3 positions of the "Midpoint" type, where
with the toggle switch in the middle position, none
contacts do not close with each other. And so-
Or steal a 10K resistor at work.

   So, if you have found everything you need, then
we can start assembling our circuit.

   First, solder IR22,as indicated
on the diagram. To check the correctness you can
connect the board in place and turn on the power
tion. If there are no glitches, that’s it
not bad. Otherwise, check the correctness of the
inclusions.

   After you connect IR'ku, to -
Before you remove all the chips RU7. Or,
if you have a powerful power supply, you can
just block them. For this you need
find 15 outputthatRU'shkito which
the signal goes /CAS first. It is necessary
cut off the track (signal /CAS) from this no-
gi, and apply +5V to the leg. Because 15th you-
the waters of all RU'shekare connected, then they are all
the airways are blocked.

   Next, the SIMM is soldered in accordance
with a diagram. Although for starters you can connect
read it as 256 KB, then you can
will check if the connection is correct.
To do this, 18th SIMM output (A9) needs
fall to the ground. And again, when turned on,
There shouldn’t be any glitches in the power supply department,
otherwise, look for where you messed up.
   If all previous options passed without
problems, then you can collect the remaining pieces
circuit juice, which is
signal conditioner MA9 and a piece of port
#1FFD. Specifically, 6 and 7 bits of this port.

───────────────────────── ──────────────────────────────────────

         DD44'   ┌── 6:D15    DD45'
          ┌──┬──┬──┐ │            ┌──┬──┬──┐
          ┤A1│MS│Y1├ │    1:DD45 1┤EX│MS│  │
          ┤B1│  │  │ │            ├──┤  │  │
          ├──┤  │  │ │      A9   6┤X1│  │  │
          ┤A2│  │Y2├ │    7:DD19 5┤X2│  │ X├7┐ MA9
          ┤B2│  │  │ │┌──────────4┤X3│  │  │ │
          ├──┤  │  │ ││      Gnd 3┤X4│  │  │ │
┌───────11┤A3│  │Y3├9┘│           ├──┤  │  │ │
│   Gnd 10┤B3│  │  │  │ 14:DD45 14┤S0│  ├──┤ │
│         ├──┤  │  │  │  2:DD45  2┤S1│  │  │ │
│┌──────14┤A4│  │Y4├12┘           ├──┤  │  │ │
││  Gnd 13┤B4│  │  │              ┤Y1│  │  │ │
││        ├──┤  │  │              ┤Y2│  │  │ │
││1:DD44 1┤S │  │  │              ┤Y3│  │ Y├ │
││  Gnd 15┤E0│  │  │              ┤Y4│  │  │ │
││        └──┴──┴──┘              ├──┤  │  │ │
││           КП16                 ┤EY│  │  │ │
│└─────────────────────────────┐  └──┴──┴──┘ │       SIMM 1Mb
└─────────────────────────────┐│     КП12    │        30 pin
                     DD9'     ││        ┌────┘     ┌──┬───────┐
                  ┌──┬──┬──┐  ││        │       +5V│ 1│  Vcc  │
             +5V 4┤S │  │Q1├5─┘│        │      /CAS│ 2│ /CAS  │
                  ├──┤  │  │   │        │  ╓───────┤ 3│ D0    │
              D6 2┤D1│  │  │   │        │  ║ 5:DD28│ 4│  A0   │
    ┌────────────3┤C │  │  │   │        │  ║ 6:DD28│ 5│  A1   │
    │             ├──┤  │__│   │        │  ╟───────┤ 6│D1    │
    │     1:DD47 1┤R │  │Q1│   │        │  ║ 7:DD28│ 7│  A2   │
    │             ├──┼──┼──┤   │        │  ║12:DD28│ 8│  A3   │
    │       +5V 10┤S │  │Q2├9──┘        │  ║    Gnd│ 9│  Gnd  │
    │             ├──┤  │  │            │  ╟───────┤10│ D2    │
    │        D7 12┤D2│  │  │            │  ║11:DD28│11│  A4   │
    ╠───────────11┤C │  │  │            │  ║10:DD28│12│  A5   │
    │             ├──┤  │__│            │  ╟───────┤13│ D3    │
    │    1:DD47 13┤R │  │Q2│            │  ║13:DD28│14│  A6   │
    │             └──┴──┴──┘            │  ║ 9:DD28│15│  A7   │
    │                 TM2               │  ╟───────┤16│ D4    │
    │ тумблер                           │  ║ 1:DD28│17│  A8   │
    │     /───── 9:DD46 (Pent 512)└──────────┤18│  A9   │
    └╦───/ ──           (Scorp 256)        ║ ничего│19│  A10  │
     │     ───── 9:DD47 (Scorp 1024)       ╠───────┤20│ D5    │
     │                                     ║ 3:DD28│21│ /we   │
     ▒ резистор                            ║    Gnd│22│  Gnd  │
     ▒ 10КОм                               ╟───────┤23│ D6    │
     │                  D0-D7 на 14-е ноги ║ ничего│24│  NC   │
     │                  DD21-DD28 соотв.   ╟───────┤25│ D7    │
     └───> +5V          ═══════════════════╝ ничего│26│ParOut │
                                             4:DD28│27│ /RAS  │
───────────────────────────────────┐         ничего│28│/ParCAS│
                                   │         ничего│29│ParIn  │
             DD38'│ +5V│30│ Vcc │
 ┌──┬──┬──┐ │ └──┴───────┘
 2:DD38 3┤D0│RG│Q0├2 3:DD38 └───────────────────────────
 5:DD38 4┤D1│ │Q1├5 4:DD38
 6:DD38 7┤D2│ │Q2├6 7:DD38 IR'ka is connected like this
 9:DD38 8┤D3│ │Q3├9 8:DD38 so that the inputs are DD38'
12:DD38 13┤D4│ │Q4├12 13:DD38 were connected to the outputs of DD38,
15:DD38 14┤D5│ │Q5├15 14:DD38 and corresponding.  outputs DD38'
16:DD38 17┤D6│ │Q6├16 17:DD38 with DD38 inputs.
19:DD38 18┤D7│ │Q7├19 18:DD38
 ├──┤ │ │
 /WE 1┤E0│ │ │
 +5V 11┤PE│ │ │
 └──┴──┴──┘
IR22

───────────────────────── ─────────────────── ────────────────────
 In this diagram, the ICs, whose numbers are
with a stroke, correspond to the chip numbers
on the diagram there are scorpions that should be soldered
get rid of these little things.

Editor's note: expression  "which should
solder" means to place on top. But
you can place all the mikruhi on free
mounting field, if you still have one
it was possible, and pull the noodles to your feet.
────────────── ────────────────────────────
Notes on the diagram:

 - break the wire coming from the 7th leg
    DD19 on 13th leg DD18;
 - on 13th leg DD18 give "ground";
 - break the wire (signalA9)going
    on 6th leg DD15;
 - continue to act in accordance with
    scheme;

Editor's note: leg 1:DD47 goes to the signal /RES,
but if you have the scheme installed #1FFD OFF
from ZX-FORMATor my circuit #1FFD ON/OFF
given in this issue, then 1 and 13 legs
DD9'(TM2)sshould be applied not to your foot 1:DD47,
and on the road, because the leg is torn off there
outside world and maliciously abused :) Or on
any other mikruhi leg on the board, where
signal /RES is suitable.
────────────── ────────────────────────────
  ATTENTION!
 Don't forget to connect the power to the microcircuits:
IR22:
- 10th pin - “ground”;
   - 20th pin - +5V.
KP12 and KP11:
 - 8th pin - “ground”;
   - 16th pin - +5V.
TM2:
 - 7th pin - “ground”;
   - 14th pin - +5V.

   Because Scorpio board has a very
tight wiring, then make sure that
When soldering, adjacent terminals were not connected
microcircuits

Editor's note: keep the soldering iron tip on your feet
microcircuits not for long, otherwise you will overheat them. EU-
If you have a large soldering iron, then don’t use it
in payment, and take a soldering iron from a neighbor
less.
────────────── ────────────────────────────
  Additional features.

   If on the 3rd and 11th legs of the microcircuit TM2
solder the wire with 9:DD46 instead of 9:DD47,and
also disable the port #1FFD (diagram from the magazine
ZX-Format #01), then you will have almost PEN-
TAGON with memory expansion via 6, 7 bits
port #7FFD. Basically disabling #1ffd
and is not necessary at all. Is it in programs?
who, having found Scorp's memory, did not
monitor other ports. The easiest way is to
drink like this - put a regular toggle switch (or
switch P2K - as you like) and
click it if necessary. This lotion
I made myself not so long ago and stayed with her
satisfied. Now in those programs that do not
understand Scorpov's meter, I use pentago-
Novsky half a meter.

Editor's note: in the diagram such a gadget is already displayed
stricken, so you don’t have to strain your
brains :)
────────────── ────────────────────────────
 So, you have a megabyte of memory. What
next!? And then here's what.
   If you are constantly in ALASM, then
look in the app, there you will find two
drivers for this cool ASMA, one for
512 kB. The second is 1024 kB, but for its support
to turn on, you need to make a small
modification of Alasm (see section LITTLE THINGS).

Editor's note: here we mean the application
toZX LIGHT #0C, but I also placed the drivers in
application to Deja Vu. About modification
Alasm, then it’s better for you to find ZX LIGHT #0C
and read there, but some comments in
Driver sources are available.

   If you can't stand Alasm,
but if you respect XAS, you can work in it,
by first switching the expansion port
to #7ffd. Then you will have all the texts
be saved during any reset, just like the user
Alasm's summoners.

Editor's note: Alasm v4.2 RULEZ!!!

   For those who work with texts, in
The application contains a RAM disk driver for
1024 KB for iS-DOS system. Having installed it,
you can copy the entire floppy disk to the RAM disk
and work with all conveniences. From the table
driver pages excluded page 8,
so during a "warm" reset the RAM disk remains
not in place.

Editor's note: in the application Deja Vu you are this
You will also find the driver.

   In addition, such an extension standard
memory is understood by the word processor Micro
Editorv3.40, and there you will have three buffers
for text instead of two.

   Well, for those who have only one disco
vert, we need copiers. And there are some.
Expansion via 6.7 bit port #1FFD lower
toss:

Consul Commander v3.33 by Phantom Family.
Real Commander 1.x by REAL SOFTWARE.
XL-COPYby XL-Disign
 VTC v1.0 by Binary Dimension
 and many other programs.

   Well, that’s basically all I had for you
report. Collect the diagram and drive to your
pleasure on a meter scorpion.

 ZS Scorpion 1024 - Rulezzz!!!

Editor's note: that's for sure!

  04/16/2000 ERASER
------------------------------------------