IPCS special symbols for system control blocks

Table 1 summarizes the IPCS special symbols. The following variables are used in the chart.
a
Represents 1 uppercase letter, A through Z
n
Represents 1 decimal digit
x or d
Represents 1 EBCDIC-hexadecimal digit, 1 decimal digit from 0 through 9, or 1 uppercase letter, A through F
Table 1. IPCS special symbols
SYMBOL Minimum Maximum Symbol description
ASCBnnnnn ASCB1 ASCB99999 Address space control block for address space nnnnn.
ASTnnnn AST0 AST9999 Address space second table corresponding to ENTRY(nnnn) in the address space first table. (An equivalent definition is that this is the address space second table for system address spaces from nnnn*16 through nnnn*16+15.)
ASTEnnnnn ASTE1 ASTE9999 Address space second table entry for address space nnnnn.
ASXBnnnnn ASXB1 ASCB99999 Address space extension block for address space nnnnn.
IHSAnnnnn IHSA1 IHSA9999 Interrupt handler save area for address space nnnnn.
LCCAnn LCCA0 LCCA99 Logical configuration communication area for processor nn.
PCCAnn PCCA0 PCCA99 Physical configuration communication area for processor nn.
PGTnnnnnaaaaa PGT1A PGT99999ZZZZZ Page table for segment aaaaa (base 26 number) in address space nnnnn.
PSAnn PSA0 PSA99 Prefixed storage area for processor nn.
PSWnn PSW0 PSW99 Program status word for processor nn.
REGACCnn REGACC0 REGACC99 Access registers for processor nn.
REGCTLnn REGCTL0 REGCTL99 Control registers for processor nn.
REGFLTnn REGFLT0 REGFLT99 Floating point registers for processor nn.
REGFPCnn REGFPC0 REGFPC99 The floating point control register for processor nn.
REGGENnn REGGEN0 REGGEN99 General purpose registers for processor nn.
Start of changeREGVECnnnEnd of change Start of changeREGVEC0End of change Start of changeREGVEC999End of change Start of changeThe vector registers for processor nnn.End of change
REG32CTLnn REG32CTL0 REG32CTL99 The 32-bit control registers for processor nn.
REG32GENnn REG32GEN0 REG32GEN99 The 32-bit general purpose registers for processor nn.
REG64CTLnn REG64CTL0 REG64CTL99 The 64-bit control registers for processor nn.
REG64GENnn REG64GEN0 REG64GEN99 The 64-bit general purpose registers for processor nn.
SGTnnnnn SGT1 SGT99999 The segment table for address space nnnnn.
TCBnnnnnaaaaa TCB1A TCB99999ZZZZZ The task control block in position aaaaa (base 26 number) on the priority chain in address space nnnnn.
UCBdddd UCB0 UCBFFFF The unit control block for the device number dddd.
Znnnnn Z1 Z99999 A dump location that is added to the pointer stack as nnnnn, whenever executing the STACK primary command, the STACK subcommand, or the IPCS dialog. The suffix nnnnn designates a sequenced number.