diff options
Diffstat (limited to 'docs/source')
-rw-r--r-- | docs/source/techspecs/device_rom_interface.rst | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/docs/source/techspecs/device_rom_interface.rst b/docs/source/techspecs/device_rom_interface.rst index 5d5dbc26192..ab5eb18737b 100644 --- a/docs/source/techspecs/device_rom_interface.rst +++ b/docs/source/techspecs/device_rom_interface.rst @@ -28,11 +28,17 @@ Use that method at machine config time to provide an address map for the bus to connect to. It has priority over a rom region if one is also present. +| **MCFG_DEVICE_ROM**\ (tag) + +Used to select a rom region to use if a device address map is not +given. Defaults to DEVICE_SELF, e.g. the device tag. + | **ROM_REGION**\ (length, tag, flags) -If a rom region with a tag identical to the device tag is provided in -the rom description for the system, it will be automatically picked up -as the connected rom. An address map has priority over the region if +If a rom region with a tag as given with **MCFG_DEVICE_ROM** if +present, or identical to the device tag otherwise, is provided in the +rom description for the system, it will be automatically picked up as +the connected rom. An address map has priority over the region if present in the machine config. | void **set_rom**\ (const void \*base, UINT32 size); |