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tdosapi.htm

This program is designated for demonstration and testing of the base functions from 16bit Disk Operating System Application Programming Interface macrolibrary dosapi.htm : DosAPI, GetArgCount, GetArg, StdInput, StdOutput, TerminateProgram.

Format

COM 16bit

Platform

DOS, Windows 32bit

Build

euroasm tdosapi.htm

Run

tdosapi arg1 arg2 ...

See also

twinapi.htm, twinabi.htm.

tdosapi PROGRAM Format=COM,Width=16,Entry=Main:
         INCLUDE dosapi.htm, cpuext%^WIDTH.htm
Main:    PROC
         GetArgCount     ; Count the command-line arguments.
         JC .Abort:
         MOV [ArgCount],CX
         MOV AX,CX
         StoD ArgCount$  ; Convert binary number AX to a decimal string.
         JC .Abort:
         StdOutput =B"%^PROGRAM launched with ", ArgCount$, =B" arguments:", Eol=Yes
         JC .Abort:
         SUB BX,BX       ; BX will be the ordinal number of each argument.
.EchoArg:INC BX
         CMP BX,[ArgCount]
         JA .EchoInp:    ; Jump when all arguments have been echoed.
         MOV AX,BX
         StoD ArgNr$     ; Convert binary number AX to a decimal string.
         SUB AX,AX
         STOSB           ; Zero-terminate the string.
         GetArg BX       ; Retrieve BX-th argument to SI,CX.
         JC .Abort:
         MOV AX,CX       ; Argument size in bytes.
         StoD ArgSize$   ; Convert binary number AX to a decimal string.
         SUB AX,AX
         STOSB           ; Zero-terminate the string.
         StdOutput ArgNr$, =B".[", ArgSize$, =B"]: "
         StdOutput SI, Size=CX, Eol=Yes ; Echo the argument.
         JC .Abort:
         JMP .EchoArg:
.EchoInp:StdOutput ="Enter some text: "
         StdInput Buffer ; Read a string from the keyboard.
         JC .Abort:
         MOV AX,CX       ; String size, including CR+LF.
         StoD BufSize$   ; Convert binary number AX to a decimal string.
         SUB AX,AX
         STOSB           ; Zero-terminate the string.
         StdOutput =B"Entered[", BufSize$, =B"]: "
         StdOutput Buffer, Size=CX ; Echo the input string.
         JC .Abort:
         StdOutput =B"%^PROGRAM terminated."
         TerminateProgram Errorlevel=0
.Abort:  StdOutput =B"Aborted, some macro returned CF.", Eol=Yes
         TerminateProgram Errorlevel=4
         ENDP Main:
ArgCount  DW W
ArgCount$ DB 6*B
ArgNr$    DB 6*B
ArgSize$  DB 6*B
BufSize$  DB 6*B
Buffer    DB 128*B
      ENDPROGRAM tdosapi