[Qemu-devel] [PATCH 2/2 V1] Fixed EPROM for AMD driver compatibility under DOS with Netware driver

[Gerhard Wiesinger]

Signed-off-by: Gerhard Wiesinger <address@hidden>
---
 hw/pcnet.c |   12 ++++++++++--
 1 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/hw/pcnet.c b/hw/pcnet.c
index db52dc5..a6d5784 100644
--- a/hw/pcnet.c
+++ b/hw/pcnet.c
@@ -1562,9 +1562,17 @@ void pcnet_h_reset(void *opaque)

     /* Initialize the PROM */

+    // Datasheet: http://pdfdata.datasheetsite.com/web/24528/AM79C970A.pdf
+    // page 95
+    // bugfix under DOS with AMD netware driver: AMD PCNTNW Ethernet MLID 
v3.10 (960115), network card not found
+    // works well under DOS with AMD NDIS driver v2.0.1, Knoppix 6.2 ok
     memcpy(s->prom, s->conf.macaddr.a, 6);
-    s->prom[12] = s->prom[13] = 0x00;
-    s->prom[14] = s->prom[15] = 0x57;
+    s->prom[6] = s->prom[7] = 0x00; // Reserved Location: must be 00h
+    s->prom[8] = 0x00; // Reserved Location: must be 00h
+    s->prom[9] = 0x11; // Hardware ID: must be 11h if compatibility to AMD 
drivers is desired
+    s->prom[10] = s->prom[11] = 0x00; // User programmable space
+    s->prom[12] = s->prom[13] = 0x00; // LSByte of two-byte checksum, which is 
the sum of bytes 00hâ??0Bh and bytes 0Eh and 0Fh, must therefore be initialized with 
0!
+    s->prom[14] = s->prom[15] = 0x57; // Must be ASCII W (57h) if 
compatibility to AMD driver software is desired

     for (i = 0,checksum = 0; i < 16; i++)
         checksum += s->prom[i];
--
1.7.3.4

Signed-off-by: Gerhard Wiesinger <address@hidden>
---
 hw/pcnet.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/hw/pcnet.c b/hw/pcnet.c
index a6d5784..2acd5f9 100644
--- a/hw/pcnet.c
+++ b/hw/pcnet.c
@@ -1571,7 +1571,7 @@ void pcnet_h_reset(void *opaque)
     s->prom[8] = 0x00; // Reserved Location: must be 00h
     s->prom[9] = 0x11; // Hardware ID: must be 11h if compatibility to AMD 
drivers is desired
     s->prom[10] = s->prom[11] = 0x00; // User programmable space
-    s->prom[12] = s->prom[13] = 0x00; // LSByte of two-byte checksum, which is 
the sum of bytes 00hâ??0Bh and bytes 0Eh and 0Fh, must therefore be initialized with 
0!
+    s->prom[12] = s->prom[13] = 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[14] = s->prom[15] = 0x57; // Must be ASCII W (57h) if 
compatibility to AMD driver software is desired

     for (i = 0,checksum = 0; i < 16; i++)
--
1.7.3.4