Model 100 System Map Part 3 (2943-3D7F)

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Origin

This is a derived work of the "Model 100 System Map", Copyright (C) 1985, Robert D. Covington, Systems Information Management Consultants.

2943H -  LEN Function

294FH -  ASC Function

295FH -  CHR$ Function

296DH -  STRING$ Function

298EH -  SPACE$ Function

29ABH -  LEFT$ Function

29DCH -  RIGHT$ Function

29E6H -  MID$ Function

2A07H -  VAL Function

2A37H -  INSTR Function

2B4CH -  FRE Function

2B69H -  Double precision subtract (FAC1=FAC1-FAC2).
         Entry:
             FAC1 - First double precision number
             FAC2 - Second double precision number
         Exit:
             FAC1 - Result of operation
               All other registers destroyed

2B78H -  Double precision addition (FAC1=FAC1+FAC2).
         Entry:
             FAC1 - First double precision number
             FAC2 - Second double precision number
         Exit:
             FAC1 - Result of operation
               All other registers destroyed

2C4FH -  Add the BCD number in the buffer pointed to by HL to the BCD 
        number in the buffer pointed to by DE leaving the result in 
        the buffer pointed to by DE.  Since no decimals are 
        significant, numbers must be padded with zeros for place 
        holders.  B contains the precision (number of bytes) of the 
        numbers added.
         Entry:
               HL - Points to the end of the first BCD number buffer
               DE - Points to the end of the second BCD number buffer
                B - Number of bytes to add (2 times the number of 
                    digits added)
         Exit:
          HL & DE - Decremented past last byte of buffer
                B = 0
                A - Destroyed

2CFFH -  Double precision multiply (FAC1=FAC1*FAC2)
         Entry:
             FAC1 - First double precision number
             FAC2 - Second double precision number
         Exit:
             FAC1 - Result of operation
               All other registers destroyed

2DC7H -  Double precision divide (FAC1=FAC1/FAC2)
         Entry:
             FAC1 - Double precision numerator
             FAC2 - Double precision denominator
         Exit:
             FAC1 - Result of operation
               All other registers destroyed

2EE6H -  Move the memory pointed to by HL to the memory pointed to by 
        DE for C bytes.  HL and DE are decremented on each cycle of 
        the move.
         Entry:
               HL - Points to end of source memory
               DE - Points to end of destination memory
                C - Number of bytes to move
         Exit:
          HL & DE - Decremented past last byte moved
                A - Destroyed

2EEFH -  COS Function
         Entry:
             FAC1 - Angle in radians
         Exit:
             FAC1 - Result of COSine

2F09H -  SIN Function
         Entry:
             FAC1 - Angle in radians
         Exit:
             FAC1 - Result of SINe

2F58H -  TAN Function
         Entry:
             FAC1 - Angle in radians
         Exit:
             FAC1 - Result of TANgent

2F71H -  ATN Function
         Entry:
             FAC1 - TANgent value
         Exit:
             FAC1 - Angle in radians

2FCFH -  LOG Function
         Entry:
             FAC1 - LOG value
         Exit:
             FAC1 - Result of LOG

305AH -  SQR Function
         Entry:
             FAC1 - Number to find square root of
         Exit:
             FAC1 - Square root of number

30A4H -  EXP Function
         Entry:
             FAC1 - Value for EXP
         Exit:
             FAC1 - Natural exponent result

313EH -  RND Function

31A0H -  Double precision square of FAC1 (FAC1=FAC1 squared)
         Entry:
           FAC1 - Double precision number to square
         Exit:
           FAC1 - Result of FAC1 squared
               All other registers destroyed

31B5H -  Move FAC1 to FAC2
         Exit:
               All registers destroyed

31B8H -  Move the floating point buffer pointed to by HL to FAC2.
         Entry:
               HL - Points to 8 byte floating point buffer
         Exit:
               All registers destroyed

31C1H -  Move FAC2 to FAC1
         Exit:
               All registers destroyed

31C4H -  Move the 8 byte floating point accumulator pointed to by HL 
        to FAC1
         Entry:
               HL - Points to start of source memory
         Exit:
               All registers destroyed

31CAH -  Move FAC1 to the 8 byte floating point accumulator pointed to 
        by HL.
         Entry:
               HL - Points to start of buffer for FAC1
         Exit:
               All registers destroyed

322EH -  Push FAC2 on stack
         Exit:
               All registers destroyed

3234H -  Push FAC1 on stack
         Exit:
               All registers destroyed

3245H -  Pop FAC2 off stack
        Exit:
           FAC2 - Floating point value POPed off stack
               All registers destroyed

324BH -  Pop FAC1 off stack
         Exit:
           FAC1 - Floating point value POPed off stack
               All registers destroyed

33DCH -  RST 30H routine

33F2H -  ABS Function

3407H -  SGN Function

3422H -  PUSH the single precision value in FAC1 onto the stack
         Exit:
               DE - Destroyed

342FH -  Load the 4 byte number pointed to by HL into FAC1.  The 
        buffer pointed to by HL reverses the two words prior to 
        storing them into FAC1
         Entry:
               HL - 4 byte number that will be put in FAC1 in reverse 
                    order
         Exit:
               HL - Incremented past last byte moved
               All other registers destroyed

3432H -  Load the single precision value in BCDE into FAC1
         Entry:
             BCDE - Single precision number
         Exit:
               BC & DE destroyed

343DH -  Load the single precision value in FAC1 into BCDE
         Exit:
             BCDE - Single precision number from FAC1
               HL - Destroyed

3447H -  Load 4 byte single precision buffer pointed to by HL  into 
        BCDE.
         Entry:
               HL - Points to the buffer containing the 4 byte single 
                    precision number
         Exit:
             BCDE - Floating point number that is in the buffer 
                    pointed to by HL

3450H -  Load the 4 byte number pointed to by HL into DEBC (note 
        reverse order!!).
         Entry:
               HL - Points to the buffer containing the 4 byte single 
                    precision number
         Exit:
             DEBC - Floating point number that is in the buffer 
                    pointed to by HL

3459H -  Move the single precision floating point number in FAC1 to 
        the buffer pointed to by HL.
         Entry:
               HL - Points to destination buffer for single precision 
                    FAC1 (4 bytes)
         Exit:
               HL - Incremented past last byte moved
               DE - Destroyed
                B - Destroyed

3461H -  Move the buffer pointed to by HL to FAC2.  The number of 
        bytes transfered depends on the current precision in FB65H.
         Entry:
               HL - Points to source buffer for floating point number
         Exit:
               HL - Incremented past last byte transfered
               All other registers destroyed

3469H -  Move the memory pointed to by DE to the memory pointed to by 
        HL for B number of bytes.  HL and DE are incremented on each 
        byte moved.
         Entry:
               DE - Points to start of source memory
               HL - Points to start of destination memory
                B - Number of bytes to move
         Exit:
          HL & DE - Incremented past last byte transfered
            A & B - Destroyed

3472H -  Move the memory pointed to by DE to the memory pointed to by 
        HL for B number of bytes.  HL and DE are decremented on each 
        byte moved.
         Entry:
               DE - Points to end of source memory
               HL - Points to end of destination memory
                B - Number of bytes to move
         Exit:
          HL & DE - Decremented past the last byte transfered
            A & B - Destroyed

3498H -  Compare the single precision number in BCDE with FAC1.
         Entry:
             BCDE - First single precision number
             FAC1 - Second single precision number
         Exit:
               HL - Destroyed
                A = 255 (-1) if BCDE>FAC1
                    1 if BCDE<FAC1
                    0 if BCDE=FAC1
           Z flag - Set if BCDE=FAC1
           S flag - Set (M) if BCDE>FAC1

34C2H -  Compare the signed integer in DE to the signed integer in HL.
         Entry:
               HL - First integer to compare
               DE - Second integer to compare
         Exit:
                A = 255 (-1) if DE>HL
                    1 if DE<HL
                    0 if DE=HL
           Z flag - Set if DE=HL
           S flag - Set (M) if DE>HL

34FAH -  Compare the double precision number in FAC1 to the double 
        precision number in FAC2.
         Entry:
             FAC1 - First double precision value to compare
             FAC2 - Second double precision value to compare
         Exit:
                A = 255 (-1) if FAC1>FAC2
                    1 if FAC1<FAC2
                    0 if FAC1=FAC2
           Z flag - Set if FAC1=FAC2
           S flag - Set (M) if FAC1>FAC2

3501H -  CINT Function.  Convert floating point number in FAC1 to an 
        integer.
         Entry:
             FAC1 - Floating point number to convert
         Exit:
               HL - Converted signed integer in FAC1
             FAC1 - Converted to an integer

3510H -  Load the signed integer in HL into FAC1
         Entry:
               HL - Signed integer to put in FAC1
         Exit:
                A = 2

352AH -  CSNG Function. Convert the number in FAC1 to a single 
        precision value.
         Entry:
             FAC1 - Number to convert
         Exit:
             FAC1 - Converted single precision number

3540H -  Convert the signed integer in FAC1 to single precision.
         Entry:
             FAC1 - Contains signed integer to convert
         Exit:
             FAC1 - Converted single precision number

3543H -  Convert the signed integer in HL to a single precision number 
        in FAC1.
         Entry:
               HL - Contains signed integer to convert
         Exit:
             FAC1 - Converted single precision number

35BAH -  CDBL function.  Convert the number in FAC1 to a double 
        precision floating point number.
         Entry:
             FAC1 - Number to convert to double precision
         Exit:
             FAC1 - Converted double precision number

3645H -  FIX Function

3654H -  INT Function.  Find the integer portion of the floating point 
        number in FAC1.
         Entry:
             FAC1 - Floating point number
         Exit:
             FAC1 - Integer portion of floating point number

36F8H -  Subtract the signed integer in HL from the signed integer in 
        DE.
         Entry:
               HL - First number to subtract
               DE - Second number to subtract
         Exit:
             FAC1 - Result of subtract
               HL - Integer result of subtract

3704H -  Add the signed integer in HL to the signed integer in DE.  If 
        the result is greater than 32767, the result is converted 
        into single precision.
         Entry:
               HL - First number to add
               DE - Second number to add
         Exit:
             FAC1 - Result of addition
               HL - Integer result of addition

3725H -  Multiply the signed integer in HL by the signed integer in 
        DE.  If the result is greater than 32767, the result is 
        converted into single precision.
         Entry:
               HL - First integer to multiply
               DE - Second integer to multiply
         Exit:
             FAC1 - Result of multiplication
               HL - Integer result of multiplication

377EH -  Divide the signed integer in DE by the signed integer in HL.
         Entry:
               HL - Integer Numerator
               DE - Integer Denominator
         Exit:
             FAC1 - Result of division

37F4H -  Add the single precision numbers in FAC1 and BCDE 
        (FAC1=FAC1+BCDE)
         Entry:
             FAC1 - First single precision number
             BCDE - Second single precision number
         Exit:
             FAC1 - Result of single precision addition

37F7H -  Add the single precision numbers in FAC1 and FAC2 
        (FAC1=FAC1+FAC2).
         Entry:
             FAC1 - First single precision number
             FAC2 - Second single precision number
         Exit:
             FAC1 - Result of single precision addition

37FDH -  Subtract the single precision numbers in FAC1 and BCDE 
        (FAC1=FAC1-BCDE)
         Entry:
             FAC1 - First single precision number
             BCDE - Second single precision number
         Exit:
             FAC1 - Result of subtract

3803H -  Multiply the single precision numbers in FAC1 and BCDE  
        (FAC1=FAC1*BCDE)
         Entry:
             FAC1 - First single precision number
             BCDE - Second single precision number
         Exit:
             FAC1 - Result of multiply

3806H -  Multiply the single precision numbers in FAC1 and FAC2  
        (FAC1=FAC1*FAC2)
         Entry:
             FAC1 - First single precision number
             FAC2 - Second single precision number
         Exit:
             FAC1 - Result of multiply

380EH -  Single precision divide (FAC1=BCDE/FAC1)
         Entry:
             BCDE - Single precision numerator
             FAC1 - Single precision denominator
         Exit:
             FAC1 - Result of divide

3827H -  Load FAC2 with the single precision number in BCDE.
         Entry:
             BCDE - Single precision number
         Exit:
             FAC2 - Copy of single precision number
               HL - Destroyed

3840H -  Convert the ASCII number pointed to by HL to its double 
        precision equivalent.
         Entry:
               HL - Points to buffer with ASCII number
         Exit:
             FAC1 - Value of ASCII number
               All registers destroyed

39D4H -  Print HL in ASCII form at the current cursor position
         Entry:
               HL - Contains 16 bit binary number to print
         Exit:
               All registers destroyed

39E8H -  Convert the binary number in FAC1 to ASCII
         Entry:
               HL - Points to the start of the buffer where the ASCII 
                    number will be stored
             FAC1 - Binary Number
         Exit:
               All registers destroyed

39ECH -  Convert the binary number in FAC1 to ASCII.  This routine 
        will format the ASCII output with the same parameters offered 
        by BASIC's PRINT USING statement.
         Entry:
                A - Bit configuration for PRINT USING options
                    Bit:
                        0 - Exponential notation
                        1 - Not used (reset)
                        2 - Sign (+ or -) follows ASCII number
                        3 - Sign (+ or -) preceeds number
                        4 - Print leading '$'
                        5 - Asterisks fill
                        6 - Print commas every third digit
                        7 - Set, allow print using formating
                            Reset, do no formating on number
                B - Number of digits to the left of the decimal 
                    point.  This value is used for placeholder filling
                C - Number of digits to the right of the decimal 
                    point.   This value is used for placeholder 
                    filling
               HL - Start of receiving buffer for ASCII number
             FAC1 - Binary number to convert
         Exit:
               All registers destroyed

3D7FH -  Single precision exponential function

3D8EH -  Double precision exponential function

3DF7H -  Integer exponential function