diff options
Diffstat (limited to 'src/devices/machine/dp8390.cpp')
-rw-r--r-- | src/devices/machine/dp8390.cpp | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/src/devices/machine/dp8390.cpp b/src/devices/machine/dp8390.cpp index 2ed12551e78..af6bf323dd6 100644 --- a/src/devices/machine/dp8390.cpp +++ b/src/devices/machine/dp8390.cpp @@ -126,12 +126,23 @@ void dp8390_device::recv(uint8_t *buf, int len) { high16 = (m_regs.dcr & 4)?m_regs.rsar<<16:0; if(buf[0] & 1) { if(!memcmp((const char *)buf, "\xff\xff\xff\xff\xff\xff", 6)) { + // broadcast if(!(m_regs.rcr & 4)) return; - } else if (memcmp((const char *)buf, "\x09\x00\x07\xff\xff\xff", 6) != 0) { // not AppleTalk broadcast - return; // multicast + } else { + // multicast + if(!(m_regs.rcr & 8)) return; + unsigned const crc = util::crc32_creator::simple(buf, 6) >> 26; + if(!BIT(m_regs.mar[crc >> 3], crc & 7)) return; } m_regs.rsr = 0x20; - } else m_regs.rsr = 0; + } else if(m_regs.rcr & 0x10) { + // promiscuous + m_regs.rsr = 0; + } else { + // physical + if(memcmp(m_regs.par, buf, 6)) return; + m_regs.rsr = 0; + } len &= 0xffff; for(i = 0; i < len; i++) { @@ -403,7 +414,6 @@ void dp8390_device::cs_write(offs_t offset, uint8_t data) { break; case 0x0c: m_regs.rcr = data; - set_promisc((data & 0x10)?true:false); break; case 0x0d: m_regs.tcr = data; |