From 041f01e60106dcc9d64f4a82ab11236c589dc264 Mon Sep 17 00:00:00 2001 From: Michael Brown Date: Wed, 22 Sep 2010 14:19:25 +0100 Subject: [contrib] Add contrib/vm, containing utilities from old contrib/bochs Signed-off-by: Michael Brown --- contrib/vm/bochs-writable-ROM-patch | 15 +++++++++++++++ 1 file changed, 15 insertions(+) create mode 100644 contrib/vm/bochs-writable-ROM-patch (limited to 'contrib/vm/bochs-writable-ROM-patch') diff --git a/contrib/vm/bochs-writable-ROM-patch b/contrib/vm/bochs-writable-ROM-patch new file mode 100644 index 0000000..dc586dd --- /dev/null +++ b/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: -- cgit v1.1