AmstradCPC6128-hypertext-en-Sinewalker

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FRAME FRAME 10 MODE 0 20 PRINT "FRAME off" 30 TAG 40 MOVE 0,200 50 FOR x=0 TO 500 STEP 4 60 IF f=1 THEN FRAME 70 MOVE x,200 80 PRINT" ";CHR$(143); 90 NEXT 100 IF f = 1 THEN RUN 110 C LS 120 TAGOFF 130 PRINT "FRAME on" 140 f=1 150 GOTO 30 run COMMAND: Synchronises the writing of graphics on the screen, with the frame flyback of the display. The overall effect of this is that character or graphics movement on the screen will appear to be smoother, without 'flickering' or 'tearing'. Associated keywords: TAG, TAG 0 F F FRE F R E ( ) F RE ( ) PRINT FRE(0) PRINT FRE("") FUNCTION: Establishes how much FREe memory remains unused by BASIC. The form F R E ( " ") forces a 'garbage collection' before returning a value for available space. NOTE -BASIC uses only the first 64K of the memory. Associated keywords: H I M EM, M EM 0 R Y Complete List of Keywords Chapter 3 Page 29
GOSUB GO SUB ,line number> GOSUB 210 COMMAND: GOes to a BASIC SUB-routine by branching to the specified ,line number>. The end of the sub-routine itself is marked by the command RE T URN, whereupon the program continues execution from the instruction after the invoked GO SUB command. Associated keywords: RE T URN GOTO GOT 0 ,line number> GOlO 90 COMMAND: GOes TO a specified line number. Associated keywords: none GRAPHICS PAPER GRAPH I CS PAPE R 10 MODE 0 20 MASK 15 30 GRAPHICS PAPER 3 40 DRAW 640,0 run COMMAND: Sets the of the graphics paper, i.e. the area behind graphics drawn on the screen. When drawing continuous lines, the graphics paper will not be seen. In the above example, the M ASK command enables a broken line to be drawn, and the graphics paper to be seen. The graphics paper's ink (in the range 0 to 15) is used for the 'paper' area of characters written when TAG is in operation, and as the default when clearing the graphics window, using C L G . Associated keywords: CLG, GRAPHICS PEN, INK, MASK, TAG, TAGOFF Chapter 3 Page 30 Complete List of Keywords
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Introduction AMSTRAD CPC6128 Integr
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Contents Chapter I Foundation Cours
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Chapter 8 More about the Bank Manag
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Connecting the computer to a monito
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Switching on - CPC6128 and MP2 Modu
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( Part 2: Connecting your periphera
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Connect the end of the lead which i
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Part 3: About Discs .... The AMSTRA
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Some other compact floppy discs emp
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Type mismatch .... means that you h
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On the screen you will see: he L L
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Reset the computer to clear the mem
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The single quote mark ' (which can
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Division (use unshifted ? key for d
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Mixed Calculations (+,-,*,/) Mixed
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Part 7: Save It .... Now that you'v
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To look briefly at some of the CP/M
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Make sure that you don't close the
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On the screen you will see: Drive A
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Part 8: Understanding Modes, Colour
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So it is with the computer. Using t
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Now let's change to a new paper. Wh
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For further demonstration of the co
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Just to prove that this is on the t
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PLOT Unlike the L 0 CAT E command,
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Circles Circles can either be plott
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440 cy(st+1)=cy(st)+1.5*r(st)*COS(s
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Now reset the computer [CONTROL] [S
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Envelope Number This is the referen
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Number of Steps This parameter spec
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Typing in for example: la Load "fi
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If you have connected an additional
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Write protection Note that you will
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At the A> prompt, type: disckit3 Se
Page 97 and 98: Part 11: Introducing the Bank Manag
Page 99 and 100: The contents of Screen 1 are copied
Page 101: .... where r % is an integer variab
Page 104 and 105: I BAN K FIN D will start at the cur
Page 106 and 107: Chapter 2 Beyond FoundationslIlSlBl
Page 108: But hang on! We said that we want t
Page 111 and 112: 32 PRINT " 1 • enter info" 33 PRI
Page 113 and 114: 100 ON ms GOSUB 120,210,270 110 GOT
Page 115 and 116: Directing data to stream # 8 sends
Page 117 and 118: This L 0 CAT E s where the menu I N
Page 119 and 120: 440 FOR x=1 TO 100 450 WRITE #9,NAM
Page 123 and 124: AFTER AFT E R [, ] GO SUB 10 AFTER
Page 125 and 126: BIN$ BIN $ ( [, ] ) PRINT BIN$(64,
Page 128: CLEAR CLEAR CLEAR COMMAND: Clears a
Page 131 and 132: CURSOR CUR S 0 R [][ , ] 10 CURSOR
Page 133 and 134: DEFINT DE FIN T
Page 135 and 136: DELETE DEL E T E DELETE 100-200 CO
Page 137 and 138: DIM D I M 10 C LS 20 DIM friend$(5
Page 139 and 140: The optional determines how the in
Page 141 and 142: Parameter 2: This parameter must b
Page 143 and 144: If2 parameters are used, these are:
Page 145 and 146: ERR ERR GOTO 500 Line does not exis
Page 147: FIX F I X ( ) PRINT FIX(9.99999) 9
Page 151 and 152: HIMEM HIMEM PRINT HIMEM 42619 FUN C
Page 153 and 154: The state of [SHIFT] and [CONTROL]
Page 155 and 156: INSTR INS T R ( [ , J , ) 10 CLS 2
Page 157 and 158: The given in the KEY command may b
Page 159 and 160: LINE INPUT L I NE IN PUT [# ,][;][
Page 161 and 162: LOG LOG ( ) PRINT LOG(9999) 9.2102
Page 163 and 164: MEMORY M EM 0 R Y MEMORY &20AA COM
Page 165 and 166: MOD MOD PRINT 10 MOD 3 1 PRINT 10
Page 167 and 168: NEW NEW NEW COMMAND: Deletes the cu
Page 170 and 171: ON GOSUB ON GO SUB
Page 172 and 173: COMMAND: GOes to a BASIC SUB-routin
Page 174 and 175: OUT OUT , OUT &FBF4,&FF COMMAND:
Page 176: PI PI PRINT PI 3.14159265 FUNCTION:
Page 179: Note that when a semicolon; is used
Page 182 and 183: String Formats 10 CLS:a$="abcdefghi
Page 184 and 185: RELEASE RE LEA S E 10 SOUND 65,100
Page 186 and 187: RESTORE RE SI 0 R E [] 10 READ a$:P
Page 188 and 189: RIGHT$ RIG H-T $ ( , ) 10 MODE 1:
Page 190: SAVE S A V E dilename>[, diletype>]
Page 193 and 194: If the parameter is zero, the soun
Page 195 and 196: SPEED KEY S P E E D KEY , 10 CLS:
Page 197 and 198: STEP (See FOR) STOP STOP 10 FOR n=1
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To allocate space in the CPC612S's
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S Y M B 0 L AFT E R will NOT operat
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TEST T EST ( , ) 10 CLS 20 PRINT
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TRorr TRON TROFF TRON 113 TROFF:PRI
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WAIT W A I T
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WINDOW SWAP WIN D 0 W SW A P , 10
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XPOS XPOS 10 MODE 1:DRAW 320,200 20
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Backup Master Discs It is most impo
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When you have only one built-in dri
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Creating a Turnkey CP/M disc As wel
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Three useful sets of keyboard codes
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Part 2: Cassettes If you wish to us
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LOAD "" LOAD "",&1F40 MERGE '"' RUN
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LIST #9 OPENOUTandCLOSEOUT PRINT #9
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If the first character of the filen
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Disc directory Every disc has two s
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Notwithstanding the contents of the
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250 y=0:b=150:GOSUB 400 260 x=575:a
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ICPM ICPM COMMAND: Switch to altern
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ITAPE.IN ITAPE.IN COMMAND: Use tape
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cOPYTO: AMSTRADBASIC on tape * Bina
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Reference guide to AMSDOS error mes
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Part2:CP/M CP/MPlus Subjects covere
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Profile files can be constructed us
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Switching default drives If you hav
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Transient commands To perform more
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Colour Hex Decimal Colour Hex Decim
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The commands: .... or .... SET24X80
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PIP KEYBOARD.CPM=KEYS.CCP .... make
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Each disc can be assigned a label,
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Advanced programming Side 2 of your
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The program is menu-driven and when
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Chapter 6 Introduction to L This Se
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First Steps .... The? prompt tells
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Occasionally, when nearly all the n
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count Outputs the number of element
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* Iput (lastput) Outputs a new obje
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wordp Outputs T RUE if the input ob
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sin Outputs the sine of the input n
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Outputs T RUE if the first word is
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pots (print out titles) Displays th
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pr (print) Displays the input objec
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* dotc Outputs the colour number of
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* setscrunch Sets the graphic scree
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ht (hide turtle) Makes the turtle i
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* setx Moves the turtle's horizonta
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Property Lists: glist (get list) Ou
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* dirpic Outputs a list of picture
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keyp Outputs T RUE if a character h
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ent Set up a tone envelope. The for
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* nob'ace Turns offtrace monitoring
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RE DE FP When T RUE allows re-defin
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BASIC Control characters Value Name
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Value Name Parameter Meaning &14 20
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If you are tempted to PO K E around
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Machine specific BASIC graphics cha
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69 &H45 &X01000101 • 73 &H49 &X01
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109 &H6D &X01101101 113 &H71 &X0111
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149 &H95 &X10010101 153 &H99 &X1001
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189 &HBD &)(10111101 193 &HC1 &)(11
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229 &HE5 &)(11100101 233 &HE9 &)(11
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Part 4: I{ey references Default ASC
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Part 5: Sound Notes and tone period
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NOTE FREQUENCY PERIOD RELATIVE ERRO
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17 Cannot CONTinue For one reason o
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AMSDOS error DERR value Cause of er
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GOSUB, GOTO, GRAPHICS HEX$, HIMEM I
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Printer Port VIEWED FROM REAR 17 16
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CHR$ Character Printer U.K. U.S.A.
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Part 14: Memory The CPC6128 contain
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It is intended that the part of the
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[ESC]b CPC6128 Colour bits [ESC]c
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ChapterS More out the Bank anagerll
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The command: I S eRE ENS W A P , [
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The specifies which record is writ
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Beware the mismatch .... Obvious er
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Chapter 9 At your leisure .... This
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The BASIC in your Amstrad computer
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Whose afraid of the jargon? As with
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If this process sounds cumbersome,
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Reconsidering the table that introd
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Some of the characters that you wil
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(Each character has a corresponding
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PRINT 10 AND 1000 Results in 8 agai
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Print formatting The PR I N T comma
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PRINT USING "\ test s \";"test stri
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Each of the following commands may
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.... and you will see that the 4th
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Usmgdata .... In a program that alw
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10 DIM a(5),b(5),s$(5) 20 FOR ;=1 T
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The sound of music .... Of all the
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Unless you are a very slow typist,
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Relative Volume Change 15 14 13 10
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The final part that can be added on
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In a complete program that may be m
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24111 IF p1$="." THEN ch1%=I1I:RETU
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Now RUN, and once again the dotted
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Ink modes It is possible to draw us
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10 REM latch animation 20 ON BREAK
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1410 I B 1420 IF fLag=2 THEN 1470 1
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2240 CLS:undraw=0:PRINT cmnd$(ro);:
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From then on, simply press the appr
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ppendixl Digital Research & AMSTRAD
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6. Registration Card DRI may from t
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ALU Arithmetic Logic Unit. The part
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Base The prime numeric consideratio
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Built-in commands Commands that are
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Compiler A complex program that con
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Download The transfer of informatio
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Gate Logical gates permit the passa
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Interpreter A further extension of
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Machine Code The programming langua
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Numeric keypad The area on the keyb
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Pixel The smallest accessible area
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Raster A system of 'writing' on the
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Software Programs themselves. May b
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Transient program A CP/M utility pr
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Appendix 3 Some Programs For You ..
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Bomber A variation on a classic the
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Telly tennis The one that started i
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75" PRINT" A 6 UP" 76" PRINT" Z 3 D
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760 ' 770 pwpe=(p1wp=p2wp):IF p1sa
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1540 1550 1560 1570 1580 1590 1600
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1130 IF VRX%=0 GOTO 890 1140 IF P%(
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2290 IF C%(J%,IC%)=6 GOTO 2310 2300
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3010 DATA 310,355,310,375,350,355,3
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1160 RETURN 1170 ON rm GOTO 1180,11
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2410 ' 2420 'Draw switches 2430 ' 2
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c I BANKREAD ......................
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D DATA ............................
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I IBM format ......................
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N o MID$ ..........................
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RETURN key ........................
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T Switching on ....................
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x y WORD ..........................
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