(C) Father Michael / Delta Corp.
Hello boys and girls. Today I will tell you about a small
Pribluda (a trifle, and nice and helpful :-) to the Speccy,
called indicator Paige (pages in the sense ;-}).
Skip to shemke:
/ /
2nDD62> 1 - X0 Y0 15 <
5nDD62> 2 - X1 K 155 Y1 14 <Eight LEDs
7nDD62> 3 - X2 (555 ..) Y2 13 (if I have them all
ID7 Y3 12 drew, it turned
4 - Y4 to 11 sucks)
May 10 Y5
__ Y6 9560
GND Y7 6 7 <> +5 B
Nutrition K155ID7: 8H - land, 16N - +5 V. (DD62 in a
computer - TM9)
In my everything is simple and clear (almost a quote).
But try to explain the working principle of this Labuda. The
findings 1, 2 and 3 decoder ID7 are connected, respectively, Jr.
(2nDD62), medium (5nDD62) and senior (7nDD62) bits switch
pages. Ie, we get:
Log Leg decoder
Conclusions: 1 2 3 Page (number of active output)
0 0 0 16 15 (Y0)
0 0 January 17, 1914 (Y1)
0 1 0 18 13 (Y2)
0 1 January 19, 1912 (Y3)
1 0 0 Nov. 20 (Y4)
1 0 21 January 1910 (Y5)
1 1 0 Sept. 22 (Y6)
1 1 1 July 23 (Y7)
Active one decoder output, which number is set at the
entrance. Accordingly, glows, and one of eight LEDs. Below
reduced prog demonstrates the capabilities of the gadgets.
; Written on ALASM.
ORG 25000
PPP LD A, 16
LD B, 7
LLL
PUSH BC
LD BC, # 7FFD
OUT (C), A
EI
DUP 5
HALT
EDUP
DI
INC A
POP BC
DJNZ LLL
LD B, 7
LLL1
PUSH BC
LD BC, # 7FFD
OUT (C), A
EI
DUP 5
HALT
EDUP
DI
DEC A
POP BC
DJNZ LLL1
;
LD A, # 7F
IN A, (254)
BIT 0, A
JP Z, 23600
;
JR PPP
; End office prog
Beautiful, is not it? " In the same makarom can simulate any
"Running lights" ;-). But even then, with the help of this small
improvements can learn which banks banging one or another prog
so stick to the free page and STS ...
________________________________________________________________
Oh and one more shemka from the same area - LED screens:
/ / 39
<> +5 V
10nDD62> 39 / /
>
GND
Briefly the principle of work:
If a 10 foot DD62 low level - the first screen
high - the second.
As of today (31/06/1999) all, bye.
