Note: This API call is for DOS and Win16 personality only. Use Family API for portability.
1 and higher
READ RANDOM RECORD FROM FCB FILE
AH = 21h DS:DX -> opened FCB (see #01345)
AL = status
00h successful 01h end of file, no data read 02h segment wrap in DTA, no data read 03h end of file, partial record read Disk Tranfer Area filled with record read from file
the record is read from the current file position as specified by the random record and record size fields of the FCB the file position is not updated after reading the record if a partial record is read, it is zero-padded to the full size not supported by MS Windows 3.0 DOSX.EXE DOS extender
AH=14h,AH=22h,AH=27h,AH=3Fh“DOS”
Text based on Ralf Brown Interrupt List Release 61
osFree Macro Library | |
---|---|
Video I/O | @SetMode @SetCurSz @SetCurPos @GetCur @SetPage @ScrollUp @ScrollDn @Scroll @GetChAtr @PutChAtr @PutCh @SetPalet @SetColor @SetDot @GetDot @WrtTTY @VideoState @GetMode @GetDisplay @GetVideoState @GetEGAInfo @Cls |
Hardware info | @Equipment @MemSize |
Serial I/O | @AuxInit @AuxSendChar @AuxRecieveChar @AuxStatus |
Tape I/O | @TapeOn @TapeOff @TapeRead @TapeWrite |
Keyboard I/O | @KbdStatus @CharIn @CharPeek |
Printer I/O | @PrnPrint @PrnInit @PrnStatus |
Disk I/O | @DskReset @DskStatus @DskRead @DskWrite @DskVerify @DskFormat |
Date and Time | @SetTime @GetTime |
Mouse | @MouInit @MouShowPointer @MouStatus @MouSetPos @MouSetMickey @MouRegion |
Memory manager | @ModBlok SET_BLOCK |