Dynamic address translation with format control

502 5((O / 5? PROGRAM STATUS WORD (PSW) T A8 63 PRIMARY ASCE I510 ACCESS REGISTER ASCE /514 SECONDARY ASCE I515 HOME ASCE /522 H - REAL ADDRESS /526 FIG. 5

(PRIOR ART)

R EFFECTIVE ASCE ( Q4 36 TABLEORIGIN - - . . . R..DT . 0 52 58 60 62 63

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TABLE DESIGNATION

DT=0 DT=2 DT=2 DT=3

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— REGION FIRST TABLE P110

- REGION SECOND TABLE I412

- REGION THIRD TABLE I414

SEGMENT TABLE f 416

II

(PRIOR ART)

VIRTUAL ADDRESS 505 I-——-RX——-1 400 404 406 RFX RSX RTX SX PX BX EFFECTIVE ADDRESS SPACE CONTROL ELEMENT \ / / / / / 7 LETEGION TABLE OR SEGMENT TABLE ORIGIN (R=0)| IGIPISIXIRHDTITLI 516 524 552 554 556

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