Le 09/09/2023 à 11:48, Mark Cave-Ayland a écrit :
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-ayl...@ilande.co.uk> --- hw/m68k/q800.c | 5 +++++ include/hw/m68k/q800.h | 1 + 2 files changed, 6 insertions(+) diff --git a/hw/m68k/q800.c b/hw/m68k/q800.c index b5b2cabc33..87665c6407 100644 --- a/hw/m68k/q800.c +++ b/hw/m68k/q800.c @@ -657,6 +657,11 @@ 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 348eaf4703..a9661f65f6 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;
Reviewed-by: Laurent Vivier <laur...@vivier.eu>
