3. Описание блока управления данными ( для bsam(Basic sequential access method))

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DCB

[BFALN={F|D}] [,BFTEK=R] [,BLKSIZE=absexp] [,BUFCB=relexp] [,BUFL=absexp] [,BUFNO=absexp] [,BUFOFF={absexp|L}] [,DCBE=relexp] ^1 [,DDNAME=symbol] ^1 [,DEVD={{DA    [,KEYLEN=absexp]}    {TA    [,DEN={1|2|3|4}]    [,TRTCH={C|E|ET|T}|{COMP|NOCOMP}]}    {PR    [,PRTSP={0|1|2|3}]}    {PC    [,MODE=[C|E][R]]    [,STACK={1|2}]    [,FUNC={I|P|PW[XT]|R|RP[D]|       RW[T]|RWP[XT][D]| W[T]}]    {RD    [,MODE=[C|E][O|R]]    [,STACK={1|2}]    [,FUNC={I|P|PW[XT]|R|RP[D]|       RW[T]|RWP[XT][D]| W[T]}]}] ,DSORG={PS|PSU} ^1 [,EODAD=relexp] [,EXLST=relexp] [,KEYLEN=absexp] [,LRECL={absexp|X}] ,MACRF={{(R[C|P])}    {(W[C|P|L])}    {(R[C|P],W[C|P])}} ^1 [,NCP=absexp] [,OPTCD={{B}    {T}    {U[C]}    {C[T][B][U]}    {H[Z][B]}    {J[C][U]}    {W[C][T][B][U]}    {Z[C][T][B][U]}    {Q[C][B][T|}    {Z}}] [,RECFM={{U[T][A|M]}    {V[B][S][T][A|M]}    {D[B][S][A]}    {F[B|S|T|BS|BT][A|M]}}] [,SYNAD=relexp]

Необходимые макросы для BSAM(пока без перевода)

1.READ

Синтаксис :

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READ

decb name |,{SF|SB|SF64|SF64P} ,dcb address ,area address [,length|,'S']

2.WRITE

Синтаксис:

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WRITE

decb name |{,SF|SF64|SF64P} ,dcb address ,area address [,{length|'S'}]

3.OPEN (Connect program and data)

Синтаксис :

[label]

OPEN

(dcb address[, [(options)][,...]]) [,TYPE=J] [,MODE=24|31]

options

The option values shown in the following table indicate the volume positioning available based on the device type and access method being used.

Access Method	Device Type
	Magnetic Tape		Direct Access Storage Device or TSO terminal				Other Types
	Option 1	Option 2		Option 1		Option 2		Option 1	Option 2
QSAM	[INPUT] [EXTEND] [OUTPUT] [RDBACK]	[,REREAD] [,LEAVE] [,DISP]		[INPUT] [EXTEND] [OUTPUT] [UPDAT]		[,REREAD] [,LEAVE] [,DISP]		[INPUT] [EXTEND] [OUTPUT]	—
BSAM	[INPUT] [EXTEND] [OUTINX] [OUTPUT] [INOUT] [OUTIN] [RDBACK]	[,REREAD] [,LEAVE] [,DISP]		[INPUT] [EXTEND] [OUTINX] [OUTPUT] [INOUT] [OUTIN] [UPDAT]		[,REREAD] [,LEAVE] [,DISP]		[INPUT] [OUTPUT]	—
QISAM Load Mode	—	—		[OUTPUT] [EXTEND]		—		—	—
BPAM, BDAM	—	—		[INPUT] [OUTPUT] [UPDAT]		—		—	—

4.CLOSE(Disconnect program and data)

Синтаксис :

[label]

CLOSE

(dcb address[,[ option][,...]]) [,TYPE=T] [,MODE=24|31]