diff options
| -rw-r--r-- | hw/pcnet.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/hw/pcnet.c b/hw/pcnet.c index db52dc59e1..6dfdcc420f 100644 --- a/hw/pcnet.c +++ b/hw/pcnet.c @@ -1562,8 +1562,24 @@ void pcnet_h_reset(void *opaque) /* Initialize the PROM */ + /* + Datasheet: http://pdfdata.datasheetsite.com/web/24528/AM79C970A.pdf + page 95 + */ memcpy(s->prom, s->conf.macaddr.a, 6); + /* Reserved Location: must be 00h */ + s->prom[6] = s->prom[7] = 0x00; + /* Reserved Location: must be 00h */ + s->prom[8] = 0x00; + /* Hardware ID: must be 11h if compatibility to AMD drivers is desired */ + s->prom[9] = 0x11; + /* User programmable space, init with 0 */ + s->prom[10] = s->prom[11] = 0x00; + /* LSByte of two-byte checksum, which is the sum of bytes 00h-0Bh + and bytes 0Eh and 0Fh, must therefore be initialized with 0! */ s->prom[12] = s->prom[13] = 0x00; + /* Must be ASCII W (57h) if compatibility to AMD + driver software is desired */ s->prom[14] = s->prom[15] = 0x57; for (i = 0,checksum = 0; i < 16; i++) |