Specifications

Data Structures
1.9 Driver Dispatch Table (DDT)
Figure 1–12 Driver Dispatch Table (DDT)
DDT$L_START 0
DDT$L_UNSOLINT 4
DDT$L_FDT 8
DDT$L_CANCEL 12
DDT$L_REGDUMP 16
DDT$W_DIAGBUFDDT$W_ERRORBUF 20
DDT$L_UNITINIT 24
DDT$L_ALTSTART 28
DDT$L_MNTVER 32
DDT$L_CLONEDUCB 36
DDT$W_FDTSIZE*Unused 40
DDT$L_MNTV_SSSC* 44
DDT$L_MNTV_FOR* 48
DDT$L_MNTV_SQD* 52
DDT$L_AUX_STORAGE* 56
DDT$L_AUX_ROUTINE* 60
DDT$L_CHANNEL_ASSIGN* 64
DDT$L_CANCEL_SELECTIVE* 68
*A read-only field
1–36