FCHTAB
FCHTAB contains a fetch/load parameter list that points to a 3q-tyte directory list. The
fetch table is used when a DOS program issues a LOAt or FEtCH request without the LIST= The IJBFTTAB field in the SISCO! block in the DOSCON CSECT of NUCON points tc
the fetch table.
o
8 10 18 20 FCHAPHNM DIRTTR
A*3 I/A*q//I DIRRR
28 DIRVEE 1*5 1 A*1 FCHALSNM DIRNAftE A*2 DIRTT DIRLL DIRPPP DIREEE
DIRAAA 1/1*6//1 Hexadecimal Field
Displacement Naae Field Description, Contents, Meaning PO!!!!!Y to 1!st o FCHAPHNM DC A (DIRNAME) Address of phase name q FCHOPT DC X'OO' A*1 Options 5 FCH1LSNM DS AL3 Address of listname
8 10 13
14
16 1S 19 1A 1D 20 22
23
26
27 DIRNAME DS CLS DIRTTR
DIRN
DIRTT
DIRLL
DIRC
DS XL3 DS XL1 DS XL2 DS XL2 DS XL1 SELFREL EQU RELPHSE EQU SVAELIG EQU SVAPHSE EQU PCLPHSE EQU PNOTFND EQU DACTIVE EQU NOTEXT EQU DIRT DIRPPP DIREEE
DIRRR
DIRR
DIRAAA
DIRK DIRVEE DS
DS
DS
DS
DS
DS
DS
DS
FCHLENG EQU in DIRC --X'SO' X'40' X'20' X'10' X'OS' X'04' X'02' X'01' XL1 XL3 XL3 XL2 XL1 XL3 XL1 XL3 *-FCHTAB A*2 A*3 Phase name Phase TTR
No. of halfwords in direct cry
No. of text blocks in phase
Length last text block Flag byte Phase self-relocatable Phase to be relocated Phase SVA eligible Phase in SVA Phase in private core image library Phase not found Phase directory active TEXT=NO specified
A*4 Reserved for IBM use Phase load point Phase entry point
No. of RLU items in phase
A*5 No. of additional RLD blocks
Partition start address A*6 Reserved for IBM use Phase entry point in SVA Total length in bytes (X'2A') FCHLENDW EQU (FCHLENG+7)/8 Total length in doublewords (X'06') 18q IBM VM/370 Data Areas and Control Block Logic

FICL FICL is a 2-byte table used in CMS/DOS to address system and programmer logical unit
blocks.
Byte 0 of FICL Foints to the first system class logical unit in the LUB table. This is always the first entry in the LUB table. The second byte points to the first programmer
class logical unit in the LUB table partition area.
The FICLPT field in the BGCOM blcck points to the FICL block.
o 1*1 I 1*2 Hexadecimal Field
Displacement Name o
1 SYSINDX DC PROGINDX DC J
AL 1 (0)
A11 (14)
Field Description, Contents, Meaning A*1 First BG system LUB index
A*2 Programmer LUBs index
Section 2. CMS tata Areas and Control Blocks 185