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authorMark Cave-Ayland <mark.cave-ayland@ilande.co.uk>2023-10-04 09:37:52 +0100
committerLaurent Vivier <laurent@vivier.eu>2023-10-06 10:33:43 +0200
commit6997f26d0dfd11f27a42caa04c3a20287452f364 (patch)
treeac795ceac7df584fc95636da762c2d54493691e0 /include
parentbdc2c77d2922d8274608b8dbc70b956494853f1b (diff)
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q800: allow accesses to RAM area even if less memory is available
MacOS attempts a series of writes and reads over the entire RAM area in order to determine the amount of RAM within the machine. Allow accesses to the entire RAM area ignoring writes and always reading zero for areas where there is no physical RAM installed to allow MacOS to detect the memory size without faulting. Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-ID: <20231004083806.757242-7-mark.cave-ayland@ilande.co.uk> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Diffstat (limited to 'include')
-rw-r--r--include/hw/m68k/q800.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/hw/m68k/q800.h b/include/hw/m68k/q800.h
index 9809716..04e4e0b 100644
--- a/include/hw/m68k/q800.h
+++ b/include/hw/m68k/q800.h
@@ -60,6 +60,7 @@ struct Q800MachineState {
MacfbNubusState macfb;
DJMEMCState djmemc;
IOSBState iosb;
+ MemoryRegion ramio;
MemoryRegion macio;
MemoryRegion macio_alias;
MemoryRegion machine_id;