Saransk. Republic of Mordovia
Free computer magazine for ZX SPECTRUM
# 36 of 12.12.99g
PREAMBLE ************* **************
(C) V. Kazakov
Hi!
PLANET SHELEZYAKA ********* ***********
(C) V. Kazakov
Today I present to your attention the article, courtesy of
giving me the Hardy / FLASH. Author me to Unfortunately, not
known. The article is published with minor cuts.
Schemes to enhance video modes SCORPIO
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Up to 512 x 192 POINTS
~~~~~~~~~~~~~~~~~~
(For yellow cards)
Cx *
* -
Rx |
|
o> D33/11!
1533KP11
> D34/11!
__ (TI) D2 / 5> 0 MX
(TI) D2 / 6> 1
2 0> D40 / 9!
! (H2) D3 / 6> o March 1> D39 / 7!
2> D17 / 6!
__ (14) D1 / 6> 0 3> D1 / 9 (H2 *)
(14) D1 / 5> 1
2
o 3
o V
o oC
> D34/10!
o> D33/10!
______ 1533LE1
(BORDER) ___
D13 / 6> 1 1o (SCR) D14 / 8> 1o 1o
o (RAS *) D2 / 8>
1533LE1 ____
(SCR *)
LN2! D39/15 <
D35 / 5> 1o o> D33 / 3!
(BRD2)
o> D33 / 4!
> D34 / 3!
555ID7
__ 4 _ DC 0 T 0
WR> oE 11 D1> 1 January
5 _ 4o
D55 / 7> oE
6 C
A13> E oR
1
A12> 0 ___ 555TM9
2 RES>
A3> 1
3
A15> 2
All designations for chips are given a yellow card
Scorpio. Date of registration fees - in 1994. Up to oblique
features indicate the number of chips, after the - pin number.
Conclusions that should be visible hours are marked with an
exclamation mark "!". Are given in parentheses denote signals
if an asterisk - this is not quite what was on the board.
The following conclusions circuits must be disconnected from
the board or cut the track so that turned out to be
disconnected only those findings, and only those chips!
D3 / 6 - H2 IE7
D17 / 6 - ADDRESS SCREEN KP11
D33 / 3,4,10,11 - VIDEO KP13
D34 / 3,10,11 - VIDEO KP13
D39 / 7,15 - REGISTER IR10
D40 / 9 - REGISTER IR16
Advanced mode is enabled by setting the 1 st bit
(Counting from 0-th) ports # EFF7. Advanced Mode
screen color is determined by the color of the curb, and the
color assigned points to 0 or 7, depending on the 2 nd bit
color border (counting from 0-th). If the color of the curb
lies in the range 0 .. 3 is the color set of points will be
white, otherwise - in black.
Half of the images is located at # C000 and
is # 1800 bytes. The other half is for
at # E000. The image may be a fifth or 7
Th banks, depending on the third bit is the port # 7FFD.
Characters on the screen alternates - one in one half, and
another the next.
On some of the most distinct from other computers
will be a glitch - the colors and picture in normal mode will
be a little match - will sometimes A black or white thin
stripes vertikoalnye height from one to znakometsa whole screen.
Glitch is corrected by introducing a resistor Rx 0.1-1
ohms. If not eliminated, but with increasing resistance band
decreases, and then nothing at all not visible - it is
necessary to solder the capacitor Cx in the 100-500 pF - chosen
at random. If an increase in the resistor strip increases, or
it no scorpion or not the yellow card.
I have been working for 2 months - do not worry
has not happened yet. Only this mode is not used anywhere
except in the Melon. : (
