1*23291Smckusick /* 2*23291Smckusick * Copyright (c) 1982 Regents of the University of California. 3*23291Smckusick * All rights reserved. The Berkeley software License Agreement 4*23291Smckusick * specifies the terms and conditions for redistribution. 5*23291Smckusick * 6*23291Smckusick * @(#)if_enreg.h 6.2 (Berkeley) 06/08/85 7*23291Smckusick */ 84765Swnj 94765Swnj /* 104765Swnj * Xerox experimental ethernet registers. 114765Swnj * 124765Swnj * N.B.: status register and device address are read/write, 134765Swnj * device address is read-only, rest are WRITE ONLY! 144765Swnj */ 154765Swnj struct endevice { 164765Swnj short en_owc; /* output word count (10 bits) */ 174765Swnj short en_oba; /* output buffer address */ 184765Swnj short en_ostat; /* output control and status */ 194765Swnj short en_odelay; /* output start delay, 25usec units */ 204765Swnj short en_iwc; /* input word count */ 214765Swnj short en_iba; /* input buffer address */ 224765Swnj short en_istat; /* input csr */ 234765Swnj short en_addr; /* ~device address (low 8 bits) */ 244765Swnj }; 254765Swnj 264765Swnj /* 274765Swnj * Control and status bits. 284765Swnj */ 294765Swnj #define EN_IERROR 0x8000 /* CRC error, buf ovflo or overrun */ 304765Swnj #define EN_OERROR 0x8000 /* collision or output underrun */ 314765Swnj #define EN_OPDONE 0x0080 /* previous operation completed */ 324765Swnj #define EN_IEN 0x0040 /* enable interrupt when DONE */ 334772Swnj #define EN_PROMISCUOUS 0x0002 /* promiscuous, input any packet */ 344765Swnj #define EN_GO 0x0001 /* start op bit */ 354765Swnj 364765Swnj #define EN_BITS "\10\20ERR\10OPDONE\7IEN\2PROM\1GO" 374765Swnj 384765Swnj #define spl_enet() spl5() 39