SCB mapping

Table 1. Structure SCB
`Offset`	`Offset`
`Dec`	`Hex`	`Type`	`Len`	`Name(Dim)`	`Description`
`0`	`(0)`	`STRUCTURE`	`0`	`SCB`	`, SCBPTR`
`0`	`(0)`	`ADDRESS`	`4`	`SCBCHAIN`	`POINTER TO NEXT SCB ON CHAIN`
`4`	`(4)`	`ADDRESS`	`4`	`SCBEXIT`	`POINTER TO USER WRITTEN EXIT ROUTINE`
`8`	`(8)`	`ADDRESS`	`4`	`SCBPARM(0)`	`ADDRESS OF PARAMETER LIST FOR STA EXIT`
`8`	`(8)`	`BITSTRING`	`1`	`SCBFLGS1`	`FIRST FLAG BYTE`
		`1... ....`		`SCBSTAI`	`"X'80'" STAI SCB`
		`.1.. ....`		`SCBASCM`	`"X'40'" ADDRESS SPACE CONTROL MODE FOR EXIT ROUTINE 0 = PRIMARY,1 = AR MODE`
		`..1. ....`		`SCBNCNL`	`"X'20'" NO CANCEL - ROUTINE RUNS PROTECTED FROM CANCELS AND DETACHES`
		`...1 ....`		`SCBESTAE`	`"X'10'" ESTAE INDICATOR`
		`.... 1...`		`SCBTOKEN`	`"X'08'" ESTAE ESTABLISHED WITH TOKEN`
		`.... .1..`		`SCBASYNC`	`"X'04'" ALLOW ASYNCHRONOUS INTERRUPTS`
		`.... ..11`		`SCBIOPRC`	`"X'03'" I/O PROCESSING OPTION, BITS 6 AND 7-- 00 - QUIESCE I/O 01 - HALT I/O 10 - BYPASS I/O INTERVENTION 11 - (RESERVED)`
		`.... ..1.`		`SCBNOIOP`	`"X'02'" BYPASS I/O INTERVENTION`
		`.... ...1`		`SCBHALT`	`"X'01'" HALT I/O`
`9`	`(9)`	`ADDRESS`	`3`	`SCBPARMA`	`24 bit user parameter list address used for FESTAE only - otherwise non-FESTAE flags`
		`1... ....`		`SCBAM64`	`"X'80'" Extended AMODE - 64. Only valid when this is not a STAE/STAI.`
		`.1.. ....`		`SCBPERCD`	`"X'40'" The recovery routine represented by this SCB has percolated`
`12`	`(C)`	`ADDRESS`	`4`	`SCBOWNR(0)`	`TCB/RB ADDRESS CONTROLLING THIS SCB`
`12`	`(C)`	`BITSTRING`	`1`	`SCBFLGS2`	`SECOND FLAG BYTE`
		`1... ....`		`SCBAMODE`	`"X'80'" USER IN 31 BIT ADDRESSING MODE`
		`1... ....`		`SCBAM31`	`"X'80'" USER IN 31 BIT ADDRESSING MODE`
		`.1.. ....`		`SCBXCTL2`	`"X'40'" RETAIN THIS SCB ACROSS XCTL`
		`..1. ....`		`SCBARRFL`	`"X'20'" ON, THIS SCB WAS CREATED BY RTM2 TO MANAGE AN`
`ASSOCIATED RECOVERY ROUTINE FROM THE LINKAGE STACK`
		`...1 ....`		`SCBINUSE`	`"X'10'" THIS SCB IS IN USE OR HAS PERCOLATED OR ABENDED`
		`.... 1...`		`SCBLO31`	`"X'08'" SDWA is LOC 31`
		`.... .1..`		`SCBPC`	`"X'04'" PC ESTAE TYPE SCB`
		`.... ..1.`		`SCBKEY0`	`"X'02'" USER IN KEY 0`
		`.... ...1`		`SCBSUPER`	`"X'01'" USER IN SUPERVISOR MODE`
`13`	`(D)`	`ADDRESS`	`3`	`SCBOWNRA`	`RB ADDRESS IF STAE, TCB ADDRESS IF STAI.`
`16`	`(10)`	`ADDRESS`	`4`	`SCBDATA(0)`	`FLAGS AND DATA FIELD`
`16`	`(10)`	`BITSTRING`	`1`	`SCBFLGS3`	`OPTION FLAGS`
		`1... ....`		`SCBSTAUT`	`"X'80'" STAE REQUESTOR IS AUTHORIZED`
		`.1.. ....`		`SCBTERMI`	`"X'40'" AUTHORIZED FOR TERM PROCESSING`
		`..1. ....`		`SCBRECRD`	`"X'20'" ERROR RECORD TO BE WRITTEN TO SYS1.LOGREC`
		`...1 ....`		`SCBDUMMY`	`"X'10'" DUMMY SCB - (WILL NOT BE SCHEDULED)`
		`.... 1...`		`SCBPRNTR`	`"X'08'" SCB PREVIOUSLY ENTERED`
		`.... .1..`		`SCBBRNTR`	`"X'04'" FESTAE`
		`.... ..1.`		`SCBRB`	`"X'02'" SAVED STATUS OF RBSCB`
		`.... ...1`		`SCBUNSS`	`"X'01'" UNSTACK SUPPRESS STATUS OF THE LINKAGE STACK ENTRY THAT WAS CURRENT WHEN THIS SCB WAS CREATED. 1 - UNSTACK SUPPRESS WAS ACTIVE 0 - UNSTACK SUPPRESS WAS INACTIVE`
`17`	`(11)`	`CHARACTER`	`1`	`SCBPKEY`	`PROGRAM KEY`
`18`	`(12)`	`CHARACTER`	`1`	`SCBID`	`SCB IDENTIFIER`
`19`	`(13)`	`BITSTRING`	`1`	`SCBPCFLG`	`PC ESTAE USER FLAGS, VALID IF SCBPC IS ON`
`20`	`(14)`	`ADDRESS`	`4`	`SCBXPTR`	`POINTER TO SCB EXTENSION`
		`1... ....`		`SCBFTIME`	`"X'80'" SCB WAS IN THE FIRST GETMAIN`
`20`	`(14)`	`X'18'`	`0`	`SCBLEN`	`"*-SCB" LENGTH OF SCB`

Table 2. Structure SCBX
`Offset`	`Offset`
`Dec`	`Hex`	`Type`	`Len`	`Name(Dim)`	`Description`
`0`	`(0)`	`STRUCTURE`	`0`	`SCBX`	`, SCBXPTR - SCB EXTENSION`
`0`	`(0)`	`BITSTRING`	`8`		`Reserved`
`8`	`(8)`	`SIGNED`	`4`	`SCBXTOKN`	`ESTAE TOKEN VALUE`
`12`	`(C)`	`CHARACTER`	`8`	`SCBXPRMS(0)`	`64 bit user parameter list address`
`12`	`(C)`	`ADDRESS`	`4`	`SCBXPARM`	`31 BIT USER PARAMETER LIST ADDRESS`
`16`	`(10)`	`SIGNED`	`4`	`SCBXALET`	`ALET ASSOCIATED WITH PARAM VALUE`
`20`	`(14)`	`ADDRESS`	`4`	`SCBXLSEA`	`LINKAGE STACK ENTRY ADDRESS`
`24`	`(18)`	`CHARACTER`	`16`	`SCBXCR34(0)`	`CONTROL REGISTERS 3 AND 4 (WITH EAX)`
`24`	`(18)`	`SIGNED`	`4`	`SCBXSINS`	`Secondary ASTE Instance#`
`28`	`(1C)`	`CHARACTER`	`2`	`SCBXKMSK`	`KEYMASK`
`30`	`(1E)`	`CHARACTER`	`2`	`SCBXSASN`	`SECONDARY ASN`
`32`	`(20)`	`SIGNED`	`4`	`SCBXPINS`	`Primary ASTE Instance#`
`36`	`(24)`	`CHARACTER`	`2`	`SCBXEAX`	`EXTENDED AUTH. INDEX`
`38`	`(26)`	`CHARACTER`	`2`	`SCBXPASN`	`PRIMARY ASN`
`38`	`(26)`	`X'28'`	`0`	`SCBXLEN`	`"*-SCBX" LENGTH OF SCB EXTENSION`
`38`	`(26)`	`X'40'`	`0`	`SCBTLEN`	`"SCBLEN+SCBXLEN" TOTAL LENGTH FOR GETMAIN`

Table 3. Cross Reference for SCB
`Name`	`Offset`	`Hex Tag`
`SCB`	`0`
`SCBAMODE`	`C`	`80`
`SCBAM31`	`C`	`80`
`SCBAM64`	`9`	`80`
`SCBARRFL`	`C`	`20`
`SCBASCM`	`8`	`40`
`SCBASYNC`	`8`	`4`
`SCBBRNTR`	`10`	`4`
`SCBCHAIN`	`0`
`SCBDATA`	`10`
`SCBDUMMY`	`10`	`10`
`SCBESTAE`	`8`	`10`
`SCBEXIT`	`4`
`SCBFLGS1`	`8`
`SCBFLGS2`	`C`
`SCBFLGS3`	`10`
`SCBFTIME`	`14`	`80`
`SCBHALT`	`8`	`1`
`SCBID`	`12`
`SCBINUSE`	`C`	`10`
`SCBIOPRC`	`8`	`3`
`SCBKEY0`	`C`	`2`
`SCBLEN`	`14`	`18`
`SCBLO31`	`C`	`8`
`SCBNCNL`	`8`	`20`
`SCBNOIOP`	`8`	`2`
`SCBOWNR`	`C`
`SCBOWNRA`	`D`
`SCBPARM`	`8`
`SCBPARMA`	`9`
`SCBPC`	`C`	`4`
`SCBPCFLG`	`13`
`SCBPERCD`	`9`	`40`
`SCBPKEY`	`11`
`SCBPRNTR`	`10`	`8`
`SCBRB`	`10`	`2`
`SCBRECRD`	`10`	`20`
`SCBSTAI`	`8`	`80`
`SCBSTAUT`	`10`	`80`
`SCBSUPER`	`C`	`1`
`SCBTERMI`	`10`	`40`
`SCBTLEN`	`26`	`40`
`SCBTOKEN`	`8`	`8`
`SCBUNSS`	`10`	`1`
`SCBX`	`0`
`SCBXALET`	`10`
`SCBXCR34`	`18`
`SCBXCTL2`	`C`	`40`
`SCBXEAX`	`24`
`SCBXKMSK`	`1C`
`SCBXLEN`	`26`	`28`
`SCBXLSEA`	`14`
`SCBXPARM`	`C`
`SCBXPASN`	`26`
`SCBXPINS`	`20`
`SCBXPRMS`	`C`
`SCBXPTR`	`14`
`SCBXSASN`	`1E`
`SCBXSINS`	`18`
`SCBXTOKN`	`8`