PBXA64 V22 vs PowerBASIC Compatibility

YES = Fully supported PART = Partial NO = Not implemented

Compiler Directives

Directive	PBXA64	Notes
`#COMPILE EXE/DLL`	YES	DLL/GUI modes rejected with diagnostic (V22)
`#DIM ALL / NONE`	YES	#DIM ALL only
`#INCLUDE / ONCE / INCLUDELONCE`	YES	Recursive resolution with depth tracking (V22)
`#PCODE / #ENDP`	YES	PILOT embedded blocks
`#IF / #ELSEIF / #ELSE / #ENDIF / $IF`	YES	Conditional compilation (V21)
`#DEFINE / #UNDEF / %DEF()`	YES	Symbol definition and detection (V21/V22)
`MACRO / MACROFUNCTION / MACROTEMP`	YES	Full macro expansion engine (V22)
`#RESOURCE`	NO	PE resources
`#DEBUG / #TOOLS / #OPTIMIZE`	NO
`#REGISTER / #ALIGN / #STACK`	NO

Declarations & Procedures

Feature	PBXA64	Notes
`FUNCTION name(...) AS type`	YES
`SUB name(...)`	YES
`FUNCTION PBMAIN() AS LONG`	YES	Entry point
`DECLARE FUNCTION/SUB ... LIB ... ALIAS ...`	YES
`DECLARE ... ALIAS "#ordinal"`	YES	V13+
`DECLARE ... VARARG`	YES	V17+
`BYVAL / BYREF`	YES
`OPTIONAL / OPT`	NO
`CALLBACK FUNCTION`	YES	V17+
`MACRO / MACROFUNCTION`	YES	Full expansion engine (V22)
`CLASS / INTERFACE / METHOD / PROPERTY`	NO	COM objects

Variable Declarations

Feature	PBXA64	Notes
`LOCAL`	YES
`DIM`	YES
`STATIC`	YES
`GLOBAL`	YES	Limited support
`THREADED`	NO
`REGISTER`	NO

Data Types

Type	Suffix	PBXA64	Notes
BYTE	`?`	YES
WORD	`?`	YES
DWORD	`?`	YES
INTEGER	`%`	YES
LONG	`&`	YES
QUAD	`&&`	YES
SINGLE	`!`	PART	Partial SSE lowering
DOUBLE	`#`	PART	Partial SSE lowering
EXT	`##`	PART	Partial x87
CURRENCY	`@`	YES
STRING	`$`	PART	Fixed buffers; heap runtime in V19
WSTRING	`$$`	PART	Scalar only, heap runtime in V19
ASCIIZ / PTR		YES
VARIANT		NO
OBJECT / GUID		NO

User-Defined Types

Feature	PBXA64	Notes
`TYPE ... END TYPE`	PART	Numeric/STRING/nested fields, member access, deep copy (V15)
`UNION ... END UNION`	NO
`ENUM ... END ENUM`	NO

Control Flow Statements

Statement	PBXA64	Notes
`IF / ELSEIF / ELSE / END IF`	YES
`FOR var = start TO end [STEP n] / NEXT`	YES
`WHILE / WEND`	YES
`DO [WHILE\|UNTIL] / LOOP [WHILE\|UNTIL]`	YES
`SELECT CASE / CASE / CASE ELSE / END SELECT`	YES
`GOTO label`	YES
`GOSUB label / RETURN`	YES
`EXIT FOR\|WHILE\|DO\|FUNCTION\|SUB`	YES
`ITERATE FOR\|WHILE\|DO`	YES
`CALL name(args)`	YES

I/O Statements

Statement	PBXA64	Notes
`PRINT expr`	YES
`INPUT [prompt;] var`	YES	Console ReadFile
`PRINT #n, expr`	YES
`INPUT #n, var`	YES
`LINE INPUT #n, var$`	YES	CR/LF-aware (V13)
`LINE INPUT prompt; var$`	NO
`OPEN FOR INPUT\|OUTPUT\|APPEND\|BINARY\|RANDOM`	YES	RANDOM/BINARY in V19
`OPEN ... ENCODING UTF16LE_BOM\|AUTO\|UTF8\|ANSI`	YES	V17-V19
`CLOSE #n`	YES
`GET #n, [pos,] var`	YES
`PUT #n, [pos,] var`	YES
`SEEK #n, pos`	YES
`PUT #n UDT with STRING/WSTRING`	YES	V20: descriptor-safe serialization
`WRITE #n`	NO
`LPRINT`	NO

File Functions

Function	PBXA64	Notes
`EOF(#n)`	YES	V12+
`LOF(#n)`	YES	V12+
`LOC(#n)`	YES	V19+
`SEEK(#n)`	YES	V19+
`FREEFILE`	NO
`FILEATTR`	NO
`DIR$ / FILECOPY / KILL / NAME / MKDIR / CHDIR`	NO

String Functions

Function	PBXA64	Notes
`LEFT$(s$, n)`	YES
`RIGHT$(s$, n)`	YES
`MID$(s$, start [, n])`	YES
`TRIM$ / LTRIM$ / RTRIM$`	YES
`UCASE$ / LCASE$`	YES
`LEN(s$)`	YES
`STRPTR(s$) / VARPTR(v)`	YES
`FORMAT$(n)`	PART	Numeric only, no mask
`SPACE$ / STRING$`	PART	Runtime exists (V12/V19)
`REMOVE$ / EXTRACT$ / PARSE$`	PART	Runtime exists (V12/V19)
`INSTR / TALLY / VERIFY`	PART	INSTR (V21); TALLY/VERIFY not yet
`STR$ / VAL / CHR$ / ASC / HEX$ / BIN$ / OCT$`	PART	STR$/VAL/CHR$/ASC/HEX$ (V21); BIN$/OCT$ no
`USING$ / REPEAT$ / BUILD$ / WRAP$`	NO
`MKL$ / CVI / MKI$ / CVS / MKD$ / CVD etc.`	NO

Math Functions

Function	PBXA64	Notes
`ABS / SGN / INT / FIX / FRAC / ROUND`	PART	ABS/SGN/INT (V21); FIX/FRAC/ROUND no
`SIN / COS / TAN / ATN`	PART	SIN/COS (V21); TAN/ATN no
`EXP / LOG / SQR`	PART	SQR (V21); EXP/LOG no
`RND / RANDOMIZE`	YES	V21+
`MIN / MAX / SWAP`	PART	SWAP (V21); MIN/MAX no

Arrays

Feature	PBXA64	Notes
Fixed arrays: `DIM a(upper)`	YES
Fixed arrays: `DIM a(lower TO upper)`	YES
`REDIM a(bounds) AS type`	YES	Stack-backed
`REDIM PRESERVE`	PART	Basic support (V15)
`LBOUND / UBOUND`	YES
`ARRAYATTR`	NO
`ERASE`	NO
`ARRAY SCAN / SORT / INSERT / DELETE`	NO

Operators

Operator	PBXA64	Notes
`+ - * / \ MOD ^`	YES
`= <> < > <= >=`	YES
`AND OR NOT`	YES
`+` (string concat)	YES
`&` (string concat)	YES	V21+
`XOR EQV IMP`	YES	V21+
`IS ISFALSE ISTRUE`	NO	Object operators

Miscellaneous

Feature	PBXA64
`SLEEP / WAITKEY$ / STDOUT / STDIN`	PART	SLEEP (V21); others no
`LSET / RSET / LET / SWAP / INCR / DECR`	YES	V21+
`WRITE #n`	YES	V21+
`POKE / PEEK / POKE$ / PEEK$ / MEMORY`	NO
`DATE$ / TIME$ / NOW / TIMER`	YES	V21+
`CODEPTR / FUNCPTR`	YES	V21+
`KILL / NAME / MKDIR / CHDIR / DIR$ / FREEFILE`	YES	V21+
`SHELL`	YES	V21+
PILOT (`T: A: M: Y: N: C: J: U: E: R: S: D: GR: SO:`)	YES
Standalone .pilot/.pil/.pcode files	YES
`#ASM` inline assembly blocks	NO

Summary

Category	YES	PART	NO
Directives	7	0	3
Declarations & Procedures	9	0	3
Variable Declarations	4	0	2
Data Types	8	4	2
User-Defined Types	0	1	2
Control Flow	10	0	0
I/O Statements	11	0	3
File Functions	4	0	2
String Functions	9	6	10
Math Functions	1	4	10
Arrays	4	1	4
Operators	17	0	2
Other	22	1	11
TOTAL	106	17	54

106 fully supported, 17 partial, 54 not yet implemented. PBXA64 V22 covers the core PB language plus macros, conditional compilation, string functions, file I/O, math functions, arrays, WinAPI, and PILOT. Missing: COM/objects, full graphics, PE resources, UNION, and advanced string packing.

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