Teams BB.
(End)
music by MIDISOFT
(C) D. Rudovsky
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In this article I will complete the description of BB and
I will give some tips on using it.
OS Spectrum has its own internal clock,
ie variable that stores the number of the fiftieth of a second
(interrupts), who came from the time the computer.
Advertisement BB decided to use this opportunity to arrange
hours in the program. Team CLOCK "string" - allows you to set
the current time, as well as set the alarm. To set the alarm
the first character in the string must be the symbol A (alarm
- wake up.). The string should be entered as:
"Hh: mm: ss" for seconds, not alarm
indicated.
To use the Alarm ka additionally introduced the format:
CLOCK n, where:
n = 0 - do not show the testimony, an alarm clock
disable;
n = 1 - indicate the time in the upper right corner
screen, turn off the alarm;
n = 2 - the time skip, to give sound
kovoy signal an alarm clock;
n = 3 - specify the time and the issue of sound
kovoy signal an alarm clock;
n = 4 - does not specify a time for tripping
Vania alarm switch to strictly
ku;
n = 5 - similar to n = 4, with the withdrawal time
on the screen;
n = 6 - similar to n = 4 with the issue of sound
Vågå signal before the transition;
n = 7 - n = 5 and n = 6 together;
n = 8 .. 9999 - set the line number
which will be made re
progress when the alarm.
Example:
10 PRINT "346 * 789 =?"
20 CLOCK "00:00:00": CLOCK "A00: 01"
1930 1000 CLOCK: CLOCK 7
F 40 INPUT X
50 IF X = 346 * 789 THEN PRINT
"Very Good!" ELSE "Bad rezult!":
GO TO 40
F 60 0 CLOCK
70 STOP
F1000 CLOCK 0
1010 PRINT "No more time!"
1020 STOP
Legend:
At 20 bar we set the system
clock to 0 and the alarm set for 1 minute.
At 30 bar we set the line of transition and operation hours
(see above). Then we ask for input of numbers and if
the result is true, and it took less than a minute
then we obtain the inscription "Very Good", clock
would be placed in a passive state (
Line 60) and the program will stop.
If the result is false, but yet
there, then displays a message will transition back to the line
40. If time expires, then regardless
the result will be given a sound
and will move to line 1000.
WARNING! Go to the alarm clock is only after all! current
line. Also, this mode does not work during editing.
The SORT command is used to sort
arrays and character strings. Its format is:
SORT [INVERSE] var, where:
INVERSE - optional, indicated
cates the condition of toilets
ki, ie, if you have one litter
Adjustments will occur on
descending order, otherwise, to
ascending;
var - the name of the array or string.
Sort going to symbolical
arrays for the first character by default.
To sort by another character uses a design: SORT S $ () (N TO),
where:
S $ - character array;
N - number of characters that will be
produced by sorting.
To sort an array of uses:
SORT S $ (N TO M), where:
N, M - border sorting.
Example:
10 DIM a $ (100,10)
20 FOR I = 1 TO 100
30 FOR J = 1 TO 10
40 LET A $ (I, J) = CHR $ (RND * 25 +65)
50 NEXT J: PRINT A $ (I)
60 NEXT I
70 PRINT "Sorting for 1st char:"
SORT A $ 80
90 FOR I = 1 TO 100
100 PRINT A $ (I)
110 NEXT I
120 PRINT "Sorting for 2st char:"
130 SORT A $ () (2 TO)
140 FOR I = 1 TO 100
150 PRINT A $ (I)
160 NEXT I
170 STOP
On it I finish the description of the commands BB
given in the end help for relevance
Keys and commands (all commands are typed in
pseudographics mode):
[A] - ALTER [6] - AUTO
[C] - CLOCK [1] - DEF KEY
[1] - DEF PROC [7] - DELETE
[D] - DO [P] - DPOKE
[0] - EDIT [E] - ELSE
[3] - END PROC [I] - EXIT IF
[F] - FILL [G] - GET
[CS] + [6] - JOIN [CS] + [6] - KEYIN
[8] - KEYWORDS 0 [9] - KEYWORDS 1
[L] - LOOP [O] - ON
[N] - ON ERROR [Q] - POP
[2] - PROC [9] - RENUM
[R] - ROLL [S] - SCROLL
[M] - SORT [T] - TRACE
[P] - USING
Options BB.
Besides additional commands BB offers several new features
that are introduced as well as usual, is determined user, but
are perceived by WB, as internal.
All functions can be divided into
three groups: logic, math and
others.
By logical functions include:
AND (n, m) [FN A (] - logical AND;
OR (n, m) [FN O (] - logical OR;
XOR (n, m) [FN X (] - XOR.
By mathematical functions include:
a) The functions convert formats:
. BIN $ (n) [FN B '& (] - transformation of the Tenth
mean-square of a binary
ary line;
DEC (string) [FN D (] - transformation
line containing
hexadecimal numbers
Lo, in decimal.
- HEX $ (n) [FN H (] - transformation of the Tenth
tichnogochislav
hex
line;
- USING $ (format, number) [FN U $ (] - sign-
curve in record numbers
specified format.
b) enhanced standard features:
. COSE (n) [FN C (] - faster and more
rough version cos;
SINE (n) [FN S (] - analog. For sin;
DPEEK (n) [FN P (] - the same way:
256 * PEEK (N +1) + PEEK (N);
RNDM (n) [FN R (] - the same way:
n * RND.
The remaining functions are functions
determine the amount of memory contents
screen, etc.
CHAR $ (n) [FN C $ (] - converting numbers
la in the range 0-65535
the equivalent row
Since the two characters;
FILLED () [FN F (] - the number of elements
images, filled
United latest to
executing FILL;
INSTRING (n, Row1, Row2) [FN I (] - return
schaet position of the first
the sign of line 2 at
viewing line 1,
starting with a given
starting position.
If the inside of row 1
no line 2, then
returns 0.
MEM () [FN M (] - returns the amount of free
the free memory;
MEMORY $ () [FN M $ (] - returns the value
of all the memory from 0
65535 interpreted
synchronize, as one
string;
MOD (n1, n2) [FN V (] - returns the remainder
dividing n1 by n2;
NUMBER (string) [FN N (] - transformation
string of two characters
a two-byte number,
where every byte of
Keep the number corresponding to
yuschee given code
ASCII;
SCRN $ (y, x) [FN K $ (] - returns the sign
located on the screen
in a given position;
STRING $ (n, string) [FN S $ (] - repeats
string specified number
honors again;
TIME $ () [FN T $ (] - returns a string
soderzhaschuyutekuschee
time.
Features programmirvaniya
in BB.
Extending the capabilities of the standard BASIC, WB revises
and programming methods themselves, so when working in BB
desirable to consider the following points:
1) As a result of changes in the action of FOR ... NEXT speed
of its execution increases significantly when working with
integers in the range 0 .. 65535, so try to do integral cycle.
2) The emergence of the procedures and
associated local variables appeared to significantly save
memory by localizing variables. It also allows you to move to
the concept of structuring the program.
3) Having the opportunity to Rich
O, and the introduction of windowing
an orderly display of necessary information.
4) Team Sorting allows for more
effective use of WB in organizaii databases.
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