commit a343df1659d59fa20b8fa642f5eb92c5aad2eab9
author bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> Thu Apr 28 19:45:10 2005 +0000
committer bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> Thu Apr 28 19:45:10 2005 +0000
tree 24b55ba88dc7cc04c95c89021c56bcb300d65c0f
parent 98ff7d30f2dd8ebf9c8ecb8a579bd24c17a15440

ne2000 reset fix - start/stop registers read access (aka OS/2 Warp V4 fix) (lukewarm)


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1422 c046a42c-6fe2-441c-8c8c-71466251a162

hw/ne2000.c

diff --git a/hw/ne2000.c b/hw/ne2000.c
index e1b656e..db61336 100644
--- a/hw/ne2000.c
+++ b/hw/ne2000.c
@@ -61,6 +61,9 @@
 #define EN1_CURPAG      0x17
 #define EN1_MULT        0x18
 
+#define EN2_STARTPG	0x21	/* Starting page of ring bfr RD */
+#define EN2_STOPPG	0x22	/* Ending page +1 of ring bfr RD */
+
 /*  Register accessed at EN_CMD, the 8390 base addr.  */
 #define E8390_STOP	0x01	/* Stop and reset the chip */
 #define E8390_START	0x02	/* Start the chip, clear reset */
@@ -150,7 +153,7 @@
 static void ne2000_update_irq(NE2000State *s)
 {
     int isr;
-    isr = s->isr & s->imr;
+    isr = (s->isr & s->imr) & 0x7f;
 #if defined(DEBUG_NE2000)
     printf("NE2000: Set IRQ line %d to %d (%02x %02x)\n",
 	   s->irq, isr ? 1 : 0, s->isr, s->imr);
@@ -255,7 +258,7 @@
     if (addr == E8390_CMD) {
         /* control register */
         s->cmd = val;
-        if (val & E8390_START) {
+        if (!(val & E8390_STOP)) { /* START bit makes no sense on RTL8029... */
             s->isr &= ~ENISR_RESET;
             /* test specific case: zero length transfert */
             if ((val & (E8390_RREAD | E8390_RWRITE)) &&
@@ -376,6 +379,12 @@
         case EN0_RSR:
             ret = s->rsr;
             break;
+        case EN2_STARTPG:
+            ret = s->start >> 8;
+            break;
+        case EN2_STOPPG:
+            ret = s->stop >> 8;
+            break;
         default:
             ret = 0x00;
             break;