IBIVI 3704 and 3705 Program Reference Handbook - Index of

CHARACTER CONTROL BLOCK
Program: NCP
Size in bytes: _ 56(38)
CCB
.(NCP)
Created-by: NCP generation.
Pointer to eeB: Follows lOB in ACB for SSC/55 lines. Follows LXB in ACB for SOLe
lines.
Function: Contains line control information.
36(24) 36(26)
CCBL2
CCBSTATE"
Address of current level 2 character Pointer to character service state address
service routine.
table. Initially. CCBSTATE contains the
address of the beginning of the state address
table. The masks shown in the byte expan·
sion are applied to the low-order byte of
CCBSTATE by the character service routines.
They change the valuf!of CCBSTATE
so that it points to the entry in the state
address table that contains the address of
the routine to handle the line state indicated.
40(28) 42(2A)
CCBTACB or
CCBTWORK or
CTSACB
CTBWORK
Pointer to the next ACB in the
Timer work entry for this ACB.
timer chain.
44(2C)
CCBlINK
Pointer to next ACB in level 2-3
chain.
46(2E)
CCBTOCMO
Time·out com·
mand.
CCBTIME"
Time-out interface.
"\" - - - - --
CCBTOREM
Time-out remem·
brance.
48(30) 50(32)
CCSBAR
CCSBCC
Line address. if type 2 scanner.
CRC check character (SSC).
or or
CCBBCB CCBLRC CCBCASE
SCS address, if type 1 scanner. LRC character
r
Case history
(SS).
(SS)'
*Indlcates a byte expansion follows.
40 3704 and 3705 Program Reference Handbook