diff options
Diffstat (limited to 'src/VBox/Devices/PC/ipxe/contrib/vm/bochs-writable-ROM-patch')
| -rw-r--r-- | src/VBox/Devices/PC/ipxe/contrib/vm/bochs-writable-ROM-patch | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/VBox/Devices/PC/ipxe/contrib/vm/bochs-writable-ROM-patch b/src/VBox/Devices/PC/ipxe/contrib/vm/bochs-writable-ROM-patch new file mode 100644 index 00000000..dc586dde --- /dev/null +++ b/src/VBox/Devices/PC/ipxe/contrib/vm/bochs-writable-ROM-patch @@ -0,0 +1,15 @@ +--- memory/memory.cc 18 Oct 2008 18:10:14 -0000 1.71 ++++ memory/memory.cc 21 Oct 2008 19:47:07 -0000 +@@ -172,7 +172,11 @@ + break; + + case 0x0: // Writes to ROM, Inhibit +- BX_DEBUG(("Write to ROM ignored: address 0x" FMT_PHY_ADDRX ", data %02x", a20addr, *data_ptr)); ++ if ((a20addr & 0xfffe0000) == 0x000e0000) { ++ BX_DEBUG(("Write to ROM ignored: address 0x" FMT_PHY_ADDRX ", data %02x", a20addr, *data_ptr)); ++ } else { ++ BX_MEM_THIS rom[(a20addr & EXROM_MASK) + BIOSROMSZ] = *data_ptr; ++ } + break; + + default: |