ASTE mapping

Table 1. Structure ASTE1
`Offset`	`Offset`
`Dec`	`Hex`	`Type`	`Len`	`Name(Dim)`	`Description`
`0`	`(0)`	`STRUCTURE`	`64`	`ASTE1`	`ADDRESS SPACE SECOND TABLE ENTRY.`
`0`	`(0)`	`ADDRESS`	`4`	`ASTE1ATO`	`AUTHORIZATION TABLE ORIGIN. CONTAINS REAL ADDRESS OF THE AT FOR THIS ADDRESS SPACE. BITS 1-29 OF ASTE1ATO, WITH TWO LOW ORDER ZEROS APPENDED, FORM THE AUTHORIZATION TABLE REAL ADDRESS. SERIALIZED BY THE PC/AUTH ADDRESS SPACE LOCAL LOCK AND CS`
		`1... ....`		`ASTE1ICMA`	`INVALID CROSS MEMORY ACCESS INDICATOR. IF 1, THE ADDRESS SPACE ASSOCIATED WITH THIS ASTE1 IS NOT AVAILABLE FOR CROSS MEMORY FUNCTIONS.`
`4`	`(4)`	`UNSIGNED`	`2`	`ASTE1AX`	`AUTHORIZATION INDEX. SERIALIZED BY THE PC/AUTH ADDRESS SPACE LOCAL LOCK.`
`6`	`(6)`	`UNSIGNED`	`2`	`ASTE1ATL`	`AUTHORIZATION TABLE LENGTH. BITS 0-11 CONTAIN THE NUMBER OF WORDS, MINUS ONE, IN THE AT. BITS 12-13 ARE ZERO. BITS 14-15 ARE INDICATORS. SERIALIZED BY THE PC/AUTH ADDRESS SPACE LOCAL LOCK.`
`6`	`(6)`	`BITSTRING`	`1`	`ASTE1ATL0`
`7`	`(7)`	`BITSTRING`	`1`	`ASTE1ATL1`
		`1111 ....`		`*`
		`.... 11..`		`ASTE1RV01`	`RESERVED BITS - ZERO`
		`.... ..1.`		`ASTE1CA`	`CONTROLLED ASID`
		`.... ...1`		`ASTE1RA`	`REUSABLE ASID`
`8`	`(8)`	`BITSTRING`	`8`	`ASTE1ASCE`	`SEGMENT/REGION TABLE DESCRIPTOR AND LENGTH IN FORMAT OF CRS 1 AND 7. SERIALIZED BY CS.`
`8`	`(8)`	`CHARACTER`	`8`	`ASTE1TA`	`TABLE ADDRESS. 0-51 OF THE ASCE, WITH 12 ZEROS APPENDED, FORM THE 64 BIT REAL ADDRESS OF THE SEGMENT/REGION TABLE.`
`8`	`(8)`	`BITSTRING`	`6`	`*`	`BYTES 0-5 OF THE ASCE`
`14`	`(E)`	`BITSTRING`	`1`	`ASTE1TFL`	`TABLE FLAGS`
		`1111 ....`		`*`	`PART OF REAL ADDRESS`
		`.... 11..`		`ASTE1ASCEBITS52AND53`	`ASCE.52/53`
		`.... ..1.`		`ASTE1SUBSP`	`SUBSPACE-GROUP CONTROL (ONLY IN PSTD AND SSTD)`
		`.... ...1`		`ASTE1PVT`	`PRIVATE-SPACE CONTROL`
`15`	`(F)`	`BITSTRING`	`1`	`ASTE1TL`	`TABLE LENGTH (IN BITS 62-63), MINUS ONE, IN UNITS OF 4096 BYTES.`
		`1... ....`		`ASTE1SAEM`	`STORAGE ALTERATION EVENT MASK. IF ON, A STORAGE ALTERATION PER EVENT CAN OCCUR WITHIN THE DESIGNATED SPACE. SERIALIZED BY COMPARE AND SWAP.`
		`.1.. ....`		`ASTE1SSEM`	`SPACE SWITCH EVENT MASK. IF 1, A PROGRAM INTERRUPT WILL BE PRESENTED ON COMPLETION OF A PC OR PT THAT CAUSES A SPACE SWITCH. SERIALIZED BY COMPARE AND SWAP.`
		`..1. ....`		`ASTE1REAL`	`REAL-SPACE CONTROL`
		`...1 ....`		`*`	`UNUSED`
		`.... 11..`		`ASTE1DTYPE`	`DESIGNATION TYPE SEE CONSTANT ASTE1DTYPE_XXX. '00' = SEGMENT TABLE '01' = REGION 3RD TABLE '10' = REGION 2ND TABLE '11' = REGION 1ST TABLE. NOT USED WHEN REAL-SPACE`
		`.... ..11`		`ASTE1TLEN`	`TABLE LENGTH. NOT USED WHEN REAL-SPACE`
`16`	`(10)`	`ADDRESS`	`4`	`ASTE1PALD`	`PASN ACCESS LIST DESIGNATOR. BITS 1-24 WITH SEVEN ZEROES APPENDED ON THE RIGHT FORM THE 31-BIT REAL ADDRESS OF THE PASN ACCESS LIST. BITS 25-31 REPRESENT THE NUMBER OF 128 BYTE ACCESS LISTS, MINUS ONE.`
`20`	`(14)`	`UNSIGNED`	`4`	`ASTE1SQN`	`ASTE1 SEQUENCE NUMBER. (UNSIGNED)`
`24`	`(18)`	`CHARACTER`	`4`	`*`
`24`	`(18)`	`ADDRESS`	`4`	`ASTE1LTD`	`LINKAGE TABLE DESIGNATOR. BITS 1-24, WITH SEVEN LOW ORDER ZEROS APPENDED, FORM THE LINKAGE TABLE REAL ADDRESS. BITS 25-31 CONTAIN THE NUMBER OF 128 BYTE EXTENTS, MINUS ONE, IN THE LINKAGE TABLE. SERIALIZED BY THE PC/AUTH ADDRESS SPACE LOCAL LOCK.`
		`1... ....`		`ASTE1LTV`	`LINKAGE TABLE VALID FLAG. IF 1, LT IS VALID, IF 0, LT IS INVALID.`
`24`	`(18)`	`ADDRESS`	`4`	`ASTE1LFTD`	`LINKAGE FIRST TABLE DESIGNATOR. BITS 1-23, WITH EIGHT LOW ORDER ZEROS APPENDED, FORM THE LINKAGE FIRST TABLE REAL ADDRESS. BITS 24-31 CONTAIN THE NUMBER OF 256 BYTE EXTENTS, MINUS ONE, IN THE LINKAGE FIRST TABLE. SERIALIZED BY THE PC/AUTH ADDRESS SPACE LOCAL LOCK.`
		`1... ....`		`ASTE1LFTV`	`LINKAGE FIRST TABLE VALID FLAG. IF 1, LFT IS VALID, IF 0, LFT IS INVALID.`
`28`	`(1C)`	`ADDRESS`	`4`	`ASTE1PROG`	`ASTE1 PROGRAMMING WORD IF ADDRESS SPACE - CONTAINS ASCB ADDRESS.`
		`1111 ....`		`ASTE1TYPE`	`ASTE1PROG TYPE INFORMATION: '0000'B - ADDRESS SPACE ASTE1 '1000'B - DATA SPACE ASTE1 '0100'B - SUBSPACE ASTE1`
`32`	`(20)`	`CHARACTER`	`12`	`ASTE1R020`	`RESERVED`
`44`	`(2C)`	`UNSIGNED`	`4`	`ASTE1IN`	`INSTANCE NUMBER`
`48`	`(30)`	`CHARACTER`	`16`	`ASTE1R030`	`RESERVED`
`64`	`(40)`	`CHARACTER`	`0`	`ASTE1END`	`END OF ASTE1.`

Table 2. Constants for ASTE
`Len`	`Type`	`Value`	`Name`	`Description`
`CONSTANTS FOR ASTE1DTYPE`
`0`	`BIT`	`00`	`ASTE1DTYPE_ST`	`SEGMENT TABLE`
`0`	`BIT`	`01`	`ASTE1DTYPE_R3T`	`REGION 3RD TABLE`
`0`	`BIT`	`10`	`ASTE1DTYPE_R2T`	`REGION 2ND TABLE`
`0`	`BIT`	`11`	`ASTE1DTYPE_R1T`	`REGION 1ST TABLE`
`CONSTANTS FOR ASTE1TYPE`
`0`	`BIT`	`1000`	`ASTE1DS`	`DATA SPACE ASTE1`
`0`	`BIT`	`0100`	`ASTE1SS`	`SUBSPACE ASTE1`
`0`	`BIT`	`0000`	`ASTE1AS`	`ADDRESS SPACE ASTE1`
`Constants for ASTE1ATL`
`2`	`HEX`	`FFF0`	`ASTE1ATLMASK`	`Mask for obtaining ATL*16 from ASTE1ATL`
`2`	`HEX`	`0001`	`ASTE1ATLNONATLMASK`	`Mask for obtaining non-ATL bits used by MVS from ASTE1ATL`

Table 3. Cross Reference for ASTE
`Name`	`Offset`	`Hex Tag`
`ASTE1`	`0`
`ASTE1ASCE`	`8`
`ASTE1ASCEBITS52AND53`	`E`	`0C`
`ASTE1ATL`	`6`
`ASTE1ATL0`	`6`
`ASTE1ATL1`	`7`
`ASTE1ATO`	`0`
`ASTE1AX`	`4`
`ASTE1CA`	`7`	`02`
`ASTE1DTYPE`	`F`	`0C`
`ASTE1END`	`40`
`ASTE1ICMA`	`0`	`80`
`ASTE1IN`	`2C`
`ASTE1LFTD`	`18`
`ASTE1LFTV`	`18`	`80`
`ASTE1LTD`	`18`
`ASTE1LTV`	`18`	`80`
`ASTE1PALD`	`10`
`ASTE1PROG`	`1C`
`ASTE1PVT`	`E`	`01`
`ASTE1RA`	`7`	`01`
`ASTE1REAL`	`F`	`20`
`ASTE1RV01`	`7`	`0C`
`ASTE1R020`	`20`
`ASTE1R030`	`30`
`ASTE1SAEM`	`F`	`80`
`ASTE1SQN`	`14`
`ASTE1SSEM`	`F`	`40`
`ASTE1SUBSP`	`E`	`02`
`ASTE1TA`	`8`
`ASTE1TFL`	`E`
`ASTE1TL`	`F`
`ASTE1TLEN`	`F`	`03`
`ASTE1TYPE`	`1C`	`F0`