Remote-processing BASIC 52 Instrukcja Użytkownika Pobierz pdf (Strona 159)

RPBASIC-52 PROGRAMMING GUIDE

C-2

This exam ple produces an expected error:

?le-100/le28

ERROR: ARITH. UNDERFLOW

READY

This exam ple produces an incorrect exponent:

>?le-100/.9e28

1.1111111 E-0

ARITH. OVERFLOW

The result of an arithmetic operation exceeds the upper limit of RPBASIC-52 floating-point numbers. RPBASIC-

52's largest floating-point number is ± .99999999E+127. An operation such as 1E100*1E28 causes an ARITH.

OVERFLO W error.

ARRAY SIZE

An array was accessed that is outside the dimension boundaries defined by a DIM instruction. For example:

DIM A(100)

PRINT A(102)

ERROR: ARRAY SIZE

READY

BAD ARGUMENT

The argument of an operator is out of limits. For example, A=AIN(300) generates a BAD ARGU MENT error

since the value assigned by the AIN operator is limited to the range 0 to 7.

BAD SYNTAX

An invalid command, instruction, or operator or ha ve attempted to use a reserved key word as part of a variable

was entered. This is a generic "I don't know what this is" responce by a computer.

C-STACK

More control stack memory was used than it has available. The control stack has of 158 byte of memory. A FOR-

NEXT loop uses 17 bytes, and DO-UNTIL, DO-WHILE , and GOSUB each use three bytes. This means you

limited to nine FOR-NEXT loops. Executing a return before a GOSUB, or a WHILE or UNTIL before a DO

instruction, or a NEXT before a FOR also generates a C-STA CK error.

CAN'T CONTINUE

A program was edited after stopping.

DIVIDE BY ZERO

A number was divided by zero or a statement such as TAN (PI/2).

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Remote-processing BASIC 52 Instrukcja Użytkownika Strona 159