PGM CPDCB
        REL
        DSEG
* Device control block for the console printer or display
*       DW 0          link to driver
*       DW 0          LINK TO CODE(0)
*       DW 0
        DW 0          device id
        DW 0          work queue
        DW 0          start routine
        DW 0
        DW 0             stop routine
        DW 0
        NOP
        CALLS 0,0        call driver in code segment
        DW 6             interrupt vector no.
        DW #DA           control & status reg
        DW #D8           i/o reg
        END