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next-cube: add empty slots for unknown accesses to next.scr memory region

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The next.scr memory is now effectively unused, however there are 3 separate region
accesses still logged that occur when booting a NeXTStep disk image. Use the
empty_slot device to capture and ignore memory accesses to these 3 memory regions.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Thomas Huth <huth@tuxfamily.org>
Message-ID: <20241222130012.1013374-15-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Thomas Huth <huth@tuxfamily.org>
This commit is contained in:
Mark Cave-Ayland 2024-12-22 12:59:53 +00:00 committed by Thomas Huth
parent 292ab2faa7
commit c178be67fd
2 changed files with 9 additions and 0 deletions
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1
hw/m68k/Kconfig
View File

@ -18,6 +18,7 @@ config NEXTCUBE
depends on M68K
select FRAMEBUFFER
select ESCC
select EMPTY_SLOT
config Q800
bool

8
hw/m68k/next-cube.c
View File

@ -22,6 +22,7 @@
#include "qom/object.h"
#include "hw/char/escc.h" /* ZILOG 8530 Serial Emulation */
#include "hw/block/fdc.h"
#include "hw/misc/empty_slot.h"
#include "hw/qdev-properties.h"
#include "qapi/error.h"
#include "qemu/error-report.h"
@ -1238,6 +1239,13 @@ static void next_cube_init(MachineState *machine)
/* BMAP IO - acts as a catch-all for now */
sysbus_mmio_map(SYS_BUS_DEVICE(pcdev), 1, 0x02100000);
/* unknown: Brightness control register? */
empty_slot_init("next.unknown.0", 0x02110000, 0x10);
/* unknown: Magneto-Optical drive controller? */
empty_slot_init("next.unknown.1", 0x02112000, 0x10);
/* unknown: Serial clock configuration register? */
empty_slot_init("next.unknown.2", 0x02118004, 0x10);
/* BMAP memory */
memory_region_init_ram_flags_nomigrate(&m->bmapm1, NULL, "next.bmapmem",
64, RAM_SHARED, &error_fatal);