Blassic

The Blassic application was developed to be a classic Basic interpreter. The line numbers are mandatory, and it has PEEK & POKE. The main goal is to execute programs written in old interpreters, even those that use peculiar control flow constructs or automodifiable code.
However, it can be used as a scripting language, and has some not-so-classic instructions. It has graphics modes that are compatible with some classic systems and user defined.

Command line options:

-a n1[,n2]
Auto number values. n1 is the first line number to be used, n2 the increment. Stablishes the values for the system vars AutoInit and AutoInc.
--allflags
Set all compatibility flags to 1. Useful only for testing.
--appleII
Ajust several system vars to Apple II Basic compatibility.
--cpc
Ajust several system vars to Amstrad CPC Basic compatibility.
-d
Detach from console.
--debug level
Set the debug level to level, the value is asigned to the DebugLevel system var and is used by the IF_DEBUG instruction.
-e command
Execute command and exit. Must be the last option. You must take care with the quoting conventions of your shell.
Example in unix whith sh: blassic -e print "Hola"
--errout
Redirect the error output to the standard output.
--gwbasic
Adjust several system vars to GW Basic compatibility.
--info
Show additional info in some error conditions.
--lfcr
Convert line feed to carriage return in INKEY$ and GET in text mode in unix.
-m mode_number | mode_name | widthxheight
Mode. Executes MODE mode_number or MODE "mode_name" or MODE width, height.
--norun
If a program is specified as argument, load it but not run.
-p list of expressions
Print each of the expressions with the PRINT instruction.
--rotate
Rotate 90 degrees all graphics modes. Useful on PDAs. Arrow keys are also rotated.
--spectrum
Adjust several system vars to Spectrum Basic compatibility.
--tron
Enter tron mode. Same effect as the TRON instruction without arguments.
--tronline
Entre tron line mode. Same effect as the TRON LINE instruction without arguments.
-x keyword
Exclude keyword from the list of Blassic keywords. Useful to execute a program that uses a Blassic keyword as variable name. Can be specified several times to exclude more keywords. Inside of a list of expressions for the -p option marks the end of the list. In other case, marks the end of options. Used as program name means read the program form standard input.