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| author | Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> | 2023-10-04 09:38:05 +0100 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2023-10-06 10:33:43 +0200 |
| commit | 9d35c6ade54c05754a1cac99df5c9a8ce6252bbe (patch) | |
| tree | cf34c27bd5e29e069d37a727f40189f17a0b92ce | |
| parent | 7685fc2a18cad56ec67f54ff64f06d840dcb0b29 (diff) | |
| download | qemu-9d35c6ade54c05754a1cac99df5c9a8ce6252bbe.zip qemu-9d35c6ade54c05754a1cac99df5c9a8ce6252bbe.tar.gz qemu-9d35c6ade54c05754a1cac99df5c9a8ce6252bbe.tar.bz2 | |
q800: add alias for MacOS toolbox ROM at 0x40000000
According to the Apple Quadra 800 Developer Note document, the Quadra 800 ROM
consists of 2 ROM code sections based at offsets 0x0 and 0x800000. A/UX attempts
to access the toolbox ROM at the lower offset during startup, so provide a
memory alias to allow the access to succeed.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20231004083806.757242-20-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
| -rw-r--r-- | hw/m68k/q800.c | 5 | ||||
| -rw-r--r-- | include/hw/m68k/q800.h | 1 |
2 files changed, 6 insertions, 0 deletions
diff --git a/hw/m68k/q800.c b/hw/m68k/q800.c index 27a0b3c..1d7cd5f 100644 --- a/hw/m68k/q800.c +++ b/hw/m68k/q800.c @@ -660,6 +660,11 @@ static void q800_machine_init(MachineState *machine) filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); memory_region_add_subregion(get_system_memory(), MACROM_ADDR, &m->rom); + memory_region_init_alias(&m->rom_alias, NULL, "m68k_mac.rom-alias", + &m->rom, 0, MACROM_SIZE); + memory_region_add_subregion(get_system_memory(), 0x40000000, + &m->rom_alias); + /* Load MacROM binary */ if (filename) { bios_size = load_image_targphys(filename, MACROM_ADDR, MACROM_SIZE); diff --git a/include/hw/m68k/q800.h b/include/hw/m68k/q800.h index 348eaf4..a9661f6 100644 --- a/include/hw/m68k/q800.h +++ b/include/hw/m68k/q800.h @@ -50,6 +50,7 @@ struct Q800MachineState { bool easc; M68kCPU cpu; MemoryRegion rom; + MemoryRegion rom_alias; GLUEState glue; MOS6522Q800VIA1State via1; MOS6522Q800VIA2State via2; |