struct vpdevice {
short plbcr;
short pbxaddr;
short prbcr;
u_short pbaddr;
short plcsr;
short plbuf;
short prcsr;
u_short prbuf;
};
#define VP_ERROR 0100000
#define VP_DTCINTR 0040000
#define VP_DMAACT 0020000
#define VP_READY 0000200
#define VP_IENABLE 0000100
#define VP_TERMCOM 0000040
#define VP_FFCOM 0000020
#define VP_EOTCOM 0000010
#define VP_CLRCOM 0000004
#define VP_RESET 0000002
#define VP_SPP 0000001