VIRTUAL STORAGE FREELOWE MAINHIGH MAINSTRT DMSFREE requests when
no morelow storage available T
Unused portion of User
Program Area•• H .... f't:'V ---------z-- GETMAIN requests Storage __________ The User's Program
(program isloaded via the LOAD command) CMS Nucleus In "saved systems" this area
is a protected segment
(thatis, all code must be
reentrant and cannot be
modified)X'tOOOO -1-------------------'----'------1 Transient Area X'EOOO' Low Storage DMSFREE Free Storage Area DMSFREE requests are filled from
this area. The upper part of this
area contains the System Disk MFD
followed by the FREETAB, if there is
enough room.
X'3000'DMSNUC System Control Blocks, flags, constants,
and pointers, __ --------------__ __ __ 'The half-page containing OPSFCT and TSOBLOKS has a storage key; X'E'
Figure 3.eKS Storage CONTROL BLOCKS BRR BEJG 2-16 IBK VK/370 System Logic and Program Determination--Volume 2
no more
Unused portion of User
Program Area
(program is
is a protected segment
(that
reentrant and cannot be
modified)
this area. The upper part of this
area contains the System Disk MFD
followed by the FREETAB, if there is
enough room.
X'3000'
and pointers,
Figure 3.