Closes a file.
[Function Code (R1 Register)]
[Parameter Block (R2 Register)]
[Parameters]
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Execution result (output)
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0: Terminated normally
-1: Error
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File number (input)
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Number that is returned when a file is opened
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[Detailed Description]
Closes a file.
[Example]
_fileclose:
MOV.L #PARM,R2 ; Set the address of the parameter block in R2.
MOV.B R1,1h:5[R2] ; Set the value of R1 (file number) in R2 + 1 bytes.
MOV.L #01060000h,R1 ; Set the function code of FCLOSE in R1.
MOV.L #SIM_IO,R3 ; Set the address of the system call in R3.
JSR R3 ; System call
NOP
MOV.L #PARM,R2 ; Set the address of the parameter block in R2.
MOV.B [R2],R1 ; Set the first byte of R2 (result of execution) in R1.
RTS ; Return to the address where the function was called.
.SECTION B,DATA,ALIGN=4
PARM: .BLKL 1 ; Parameter block area
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