programmer
    parent <id>                               # optional parent
    id       = <id1> [, <id2> ... ] ;         # <idN> are quoted strings
    desc     = <description> ;                # quoted string
    type     = <type>;                        # programmer type, quoted string
                                              # supported types can be listed by "-c ?type"
    prog_modes = PM_<i/f> { | PM_<i/f> }      # interfaces, e.g., PM_SPM|PM_PDI
    connection_type = parallel | serial | usb | spi
    baudrate = <num> ;                        # baudrate for avr910-programmer
    vcc      = <pin1> [, <pin2> ... ] ;       # pin number(s)
    buff     = <pin1> [, <pin2> ... ] ;       # pin number(s)
    reset    = <pin> ;                        # pin number
    sck      = <pin> ;                        # pin number
    sdo      = <pin> ;                        # pin number
    sdi      = <pin> ;                        # pin number
    errled   = <pin> ;                        # pin number
    rdyled   = <pin> ;                        # pin number
    pgmled   = <pin> ;                        # pin number
    vfyled   = <pin> ;                        # pin number
    usbvid   = <hexnum> ;                     # USB VID (Vendor ID)
    usbpid   = <hexnum> [, <hexnum> ...] ;    # USB PID (Product ID)
    usbdev   = <interface> ;                  # USB interface or other device info
    usbvendor = <vendorname> ;                # USB Vendor Name
    usbproduct = <productname> ;              # USB Product Name
    usbsn    = <serialno> ;                   # USB Serial Number
    hvupdi_support = <num> [, <num>, ... ] ;  # UPDI HV Variants Support
;