Let's Emulate Space Invaders - Revision history

Ajr at 00:08, 15 July 2016

2016-07-15T00:08:25Z

← Older revision		Revision as of 02:08, 15 July 2016
Line 43:		Line 43:
	* A memory map for each CPU.		* A memory map for each CPU.
	* A list of input devices and DIP switches.		* A list of input devices and DIP switches.
			* A GFXDECODE_START structure, linked to one or more gfx_layout structures, to define a machine's graphics layout. (This is common but not required; it may be omitted from drivers for systems with framebuffer- or GPU-based video rendering.)
	* A MACHINE_CONFIG structure to define a PCB's hardware configuration.		* A MACHINE_CONFIG structure to define a PCB's hardware configuration.
	* A ROM_START/ROM_END structure to define the ROM configuration for a game.		* A ROM_START/ROM_END structure to define the ROM configuration for a game.

Ajr at 23:55, 14 July 2016

2016-07-14T23:55:50Z

← Older revision		Revision as of 01:55, 15 July 2016
Line 40:		Line 40:
	Any driver in MAME typically consists of:		Any driver in MAME typically consists of:

			* A declaration of a class derived from driver_device. This holds the driver data and all associated methods. (When the driver has multiple source files, this is done in a header file placed in /src/mame/includes.)
	* A memory map for each CPU.		* A memory map for each CPU.
	* A list of input devices and DIP switches.		* A list of input devices and DIP switches.

Ajr: More corrections

2016-07-14T23:41:34Z

More corrections

← Older revision		Revision as of 01:41, 15 July 2016
Line 30:		Line 30:
	* ./audio - Audio board drivers go here. in /src/mame only.		* ./audio - Audio board drivers go here. in /src/mame only.
	* ./cpu - CPU cores and disassemblers go here. In /src/devices only.		* ./cpu - CPU cores and disassemblers go here. In /src/devices only.
	* ./includes - Headers for entire systems go here. In ~~both directories~~.		* ./includes - Headers for entire systems go here. In /src/mame only.
	* ./layout - MAME artwork layouts go here. Only necessary for games that have unusual screen layouts.		* ./layout - MAME artwork layouts go here. Only necessary for games that have unusual screen layouts.
	* ./machine - Non-CPU IC and subsystem drivers go here. In ~~/src/mame only~~.		* ./machine - Non-CPU IC and subsystem drivers go here. In both directories.
	* ./sound - Sound IC drivers go here. In /src/devices only.		* ./sound - Sound IC drivers go here. In /src/devices only.
	* ./video - Video board drivers go here in /src/mame, video IC drivers go here in /src/devices.		* ./video - Video board drivers go here in /src/mame, video IC drivers go here in /src/devices.

Ajr: src/devices has been split from src/emu

2016-07-14T23:40:04Z

src/devices has been split from src/emu

← Older revision		Revision as of 01:40, 15 July 2016
Line 24:		Line 24:

	* /src/mame - All MAME-specific subsystems (drivers, sound boards, video boards, etc.) go here.		* /src/mame - All MAME-specific subsystems (drivers, sound boards, video boards, etc.) go here.
	* /src/~~emu~~ - All ~~code libemu~~ subsystems (CPU cores, audio chips, etc.) go here.		* /src/devices - All core subsystems (CPU cores, audio chips, etc.) go here.

	Under each of these are several subdirectories. Since there is some overlap, and since only some are relevant to writing a driver, only a subset of them will be described. They are:		Under each of these are several subdirectories. Since there is some overlap, and since only some are relevant to writing a driver, only a subset of them will be described. They are:

	* ./audio - Audio board drivers go here. in /src/mame only.		* ./audio - Audio board drivers go here. in /src/mame only.
	* ./cpu - CPU cores and disassemblers go here. In /src/~~emu~~ only.		* ./cpu - CPU cores and disassemblers go here. In /src/devices only.
	* ./includes - Headers for entire systems go here. In both directories.		* ./includes - Headers for entire systems go here. In both directories.
	* ./layout - MAME artwork layouts go here. Only necessary for games that have unusual screen layouts.		* ./layout - MAME artwork layouts go here. Only necessary for games that have unusual screen layouts.
	* ./machine - Non-CPU IC and subsystem drivers go here. In /src/mame only.		* ./machine - Non-CPU IC and subsystem drivers go here. In /src/mame only.
	* ./sound - Sound IC drivers go here. In /src/~~emu~~ only.		* ./sound - Sound IC drivers go here. In /src/devices only.
	* ./video - Video board drivers go here in /src/mame, video IC drivers go here in /src/~~emu~~.		* ./video - Video board drivers go here in /src/mame, video IC drivers go here in /src/devices.

	=== Driver Structure ===		=== Driver Structure ===

Mooglyguy: /* Writing It */

2010-10-24T01:57:25Z

Writing It

← Older revision		Revision as of 03:57, 24 October 2010
Line 17:		Line 17:
	* A pipe.		* A pipe.

	== ~~Writing It~~ ==		== Structures ==

	=== Source Structure ===		=== Source Structure ===

Mooglyguy: /* The Topics */

2010-10-24T01:56:43Z

The Topics

← Older revision		Revision as of 03:56, 24 October 2010
Line 60:		Line 60:

	=== Game Definition ===		=== Game Definition ===

	~~== The Topics ==~~
	* [[Part 1]]: Writing the disassembler
	* [[Part 2]]: Writing the CPU core
	* [[Part 3]]: Writing the driver

Mooglyguy: First pass at intro

2010-10-24T01:56:29Z

First pass at intro

@@ Line 1: / Line 1: @@
-== The Intro ==
+== Introduction ==
-Emulating any system can be a daunting task, even to experienced software engineers.  MAME can provide a good starting point, but can itself be quite daunting to get into.  This series of articles should provide some insight into the way MAME works, and accelerate any attempts to emulate something in a stand-alone emulator.
 == The Topics ==

Mooglyguy: Initial version of this page.

2010-03-03T03:10:02Z

Initial version of this page.

New page

== The Intro ==
Emulating any system can be a daunting task, even to experienced software engineers. MAME can provide a good starting point, but can itself be quite daunting to get into. This series of articles should provide some insight into the way MAME works, and accelerate any attempts to emulate something in a stand-alone emulator.

== The Topics ==
* [[Part 1]]: Writing the disassembler
* [[Part 2]]: Writing the CPU core
* [[Part 3]]: Writing the driver