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CD ROM Paradise Collection 4 1995 Nov.iso
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STRINGS.SWG
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0044_Convert to LOWER case.pas
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Pascal/Delphi Source File
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1993-09-26
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866b
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35 lines
{*****************************************************************************
* Function ...... LowerCase()
* Purpose ....... To convert a string to all lower case
* Parameters .... s String to convert
* Returns ....... <s> in all lower case leters
* Notes ......... None
* Author ........ Martin Richardson
* Date .......... October 2, 1992
*****************************************************************************}
FUNCTION LowerCase( s: STRING ): STRING; ASSEMBLER;
ASM
PUSH DS
CLD
LDS SI, s
XOR AX, AX
LODSB
XCHG AX, CX
LES DI, @Result
MOV BYTE PTR ES:[DI], CL
JCXZ @@3
@@1: LODSB
CMP AL, 'A'
JB @@2
CMP AL, 'Z'
JA @@2
OR AL, $20
@@2: STOSB
LOOP @@1
@@3: POP DS
END;