Banshee / Voodoo3: Added support for mem_read() with length 3.

This should fix Voodoo3 with Windows 3.11 driver.
bochs-emu · Sep 19, 2024 · 52c2fbe · 52c2fbe
1 parent 0fe6799
commit 52c2fbe
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/bochs/iodev/display/banshee.cc b/bochs/iodev/display/banshee.cc
@@ -941,6 +941,16 @@ void bx_banshee_c::mem_read(bx_phy_address addr, unsigned len, void *data)
     case 2:
       *((Bit16u*)data) = (Bit16u)value;
       break;
+    case 3:
+#ifdef BX_LITTLE_ENDIAN
+      *((Bit16u*)data) = (Bit16u)value;
+      *((Bit8u*)data + 2) = (Bit8u)(value >> 16);
+#else
+      for (unsigned i = 0; i < 3; i++) {
+        *((Bit8u*)data + i) = (Bit8u)(value >> ((2 - i) << 8));
+      }
+#endif
+      break;
     case 4:
       *((Bit32u*)data) = (Bit32u)value;
       break;