613008f725
Bit 7 of the control register inhibits all drive select lines when high and this is now implemented. This was a long standing feature in this line of floppy disk controller boards. The drives are also inhibited when the motor timer has timed out. It is not just their motors that are off. Add a conf option to interpret bit 7 of the control register as an 'erroneous' side select, and log such usage. Some drivers use bit 7 for side selection and this option help work around them and adapt them. Add support to set the clock rate using the DC5 extended control register, and update the associated code. The clock rate config option is now only an 'expected' rate and may be null. Clarify that the motor timer is only triggered by access to the FDC registers and not by access to the control registers. There appears to be a common error in drivers, they access the control register and then wait a period, and it appears they wait for the motor to spin up, but that can not happen. The problem appears to be documented, flaky disk booting, having to reset and try again and again. It seems best to deal with that in boot and driver software rather than an emulator hack. The motors are on, or off, irrespective of drive selection. Rewrite the updating of the floppy and FDC state based on the control register and the motor timer out, so that the latched control register state is respected when the motor timer output changes - it had been just turning the motors on or off but the drive selection also needs to be updated. Reset the DDEN input, setting it for single density, upon device reset. Default DC5 to 16 byte address mode to suit the SWTPC 6809 - the SWTPC 6800 overrides this default for it's 4 byte address mode. Indentation fixes. |
||
|---|---|---|
| 3rdparty | ||
| android-project | ||
| artwork | ||
| benchmarks | ||
| bgfx | ||
| ctrlr | ||
| docs | ||
| doxygen | ||
| hash | ||
| hlsl | ||
| ini | ||
| keymaps | ||
| language | ||
| nl_examples | ||
| plugins | ||
| projects | ||
| regtests | ||
| roms | ||
| samples | ||
| scripts | ||
| src | ||
| tests | ||
| web | ||
| .appveyor.yml | ||
| .drone.sec | ||
| .drone.yml | ||
| .gitattributes | ||
| .gitignore | ||
| .travis.yml | ||
| dist.mak | ||
| LICENSE.md | ||
| makefile | ||
| README.md | ||
| uismall.bdf | ||
MAME
Build status for tiny build only, containing just core parts of project:
| OS/Compiler | Status |
|---|---|
| Linux GCC / OSX Clang |  |
| Windows MinGW |  |
| Windows MSVC |
Static analysis status for entire build (except for third-party parts of project):
What is MAME?
MAME is a multi-purpose emulation framework.
MAME's purpose is to preserve decades of software history. As electronic technology continues to rush forward, MAME prevents this important "vintage" software from being lost and forgotten. This is achieved by documenting the hardware and how it functions. The source code to MAME serves as this documentation. The fact that the software is usable serves primarily to validate the accuracy of the documentation (how else can you prove that you have recreated the hardware faithfully?). Over time, MAME (originally stood for Multiple Arcade Machine Emulator) absorbed the sister-project MESS (Multi Emulator Super System), so MAME now documents a wide variety of (mostly vintage) computers, video game consoles and calculators, in addition to the arcade video games that were its initial focus.
How to compile?
If you're on a *NIX or OSX system, it could be as easy as typing
make
for a MAME build,
make SUBTARGET=arcade
for an arcade-only build, or
make SUBTARGET=mess
for MESS build.
See the Compiling MAME page on our documentation site for more information, including prerequisites for Mac OS X and popular Linux distributions.
For recent versions of OSX you need to install Xcode including command-line tools and SDL 2.0.
For Windows users, we provide a ready-made build environment based on MinGW-w64.
Visual Studio builds are also possible, but you still need build environment based on MinGW-w64. In order to generate solution and project files just run:
make vs2017
or use this command to build it directly using msbuild
make vs2017 MSBUILD=1
Where can I find out more?
- Official MAME Development Team Site (includes binary downloads for MAME and MESS, wiki, forums, and more)
- Official MESS Wiki
- MAME Testers (official bug tracker for MAME and MESS)
Contributing
Coding standard
MAME source code should be viewed and edited with your editor set to use four spaces per tab. Tabs are used for initial indentation of lines, with one tab used per indentation level. Spaces are used for other alignment within a line.
Some parts of the code follow Allman style; some parts of the code follow K&R style -- mostly depending on who wrote the original version. Above all else, be consistent with what you modify, and keep whitespace changes to a minimum when modifying existing source. For new code, the majority tends to prefer Allman style, so if you don't care much, use that.
All contributors need to either add a standard header for license info (on new files) or inform us of their wishes regarding which of the following licenses they would like their code to be made available under: the BSD-3-Clause license, the LGPL-2.1, or the GPL-2.0.
License
The MAME project as a whole is distributed under the terms of the GNU General Public License, version 2 or later (GPL-2.0+), since it contains code made available under multiple GPL-compatible licenses. A great majority of files (over 90% including core files) are under the BSD-3-Clause License and we would encourage new contributors to distribute files under this license.
Please note that MAME is a registered trademark of Gregory Ember, and permission is required to use the "MAME" name, logo, or wordmark.
Copyright (C) 1997-2019 MAMEDev and contributors
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Please see LICENSE.md for further details.