The keyboard should communicate at 1,200 Baud, but due to bugs in the SCC
it's set to 9,600 Baud. The sun4c machines program the Baud rate
generator dividers for the serial ports with 00:0e and the dividers for
the keyboard/mouse ports with 00:7e. Therefore the ratio of Baud rates
should be (0x7e + 2) / (0x0e + 2) = 128 / 16 = 8. However both the RS232
ports and the keyboard/mouse ports run at 9,600 Baud, when the
keyboard/mouse ports should run at 1,200 Baud (which is 1/8 of 9,600 which
matches the ratio of the divider values).
I've artificially limited the rate the keyboard can transmit at to be no
faster than it could at 1,200 Baud using a timer. I can remove this hack
once we get correct SCC divider behaviour.
I attempted to hook up the SCC interrupts to level 12 as specified in the
SPARCstation-1 Programmer's Model in the table on Page 19. No interrupts
seem to be generated, so either I've screwed this up somehow, the Sun
isn't enabling interrupts, or there's another bug in the SCC emulation.
Sorry if I've screwed it up - I won't be offended if someone replaces it
wholesale.
The keyboard receives the reset commands from the Sun and sends back the
self test pass response, but the SCC seems to get a buffer overrun error.
So it appears that the received data isn't being read out. I haven't been
able to work out why.
- Create a SG-1000 expansion slot.
- Hook up the SG-1000 expansion slot to sg1000.cpp and sms.cpp (sg1000m3).
- Split the sk1100 code from sg1000.cpp and attach it to the new expansion slot.
- Create a new FM Sound Unit device and attach it to the new expansion slot.
- For the sc3000 driver, re-add sk1100 as a fixed SG-1000 expansion device.
- Add sg1000 software list to sg1000m3 and Japanese/Korean SMS drivers.
sms.cpp: implemented some new findings [Enik Land]
- Remove some mirrors for ports $DC/$DD on SMSJ based on Charles' hw tests.
- Add basic C-Sync callback to 315_5124.cpp, based on Charles' hw tests.
- Add built-in Rapid Fire (uses C-Sync) for SMSJ and Korean SMS1 drivers.
- Add new SMS drivers due to XTAL differences:
sms1br - Tec Toy Master System I (Brazil)
sms2br - Tec Toy Master System II (Brazil)
smsbr - Tec Toy Master System III Compact (Brazil)
sms1paln - Tec Toy Master System I (PAL-N)
sms2paln - Tec Toy Master System II (PAL-N)
smspaln - Tec Toy Master System III Compact (PAL-N)
Brazil is PAL-M TV system, but I decided to call it by the
country name, seems to be better recognizable and for
emulation looks more like a NTSC system. PAL-N is used
in Argentina, Paraguay and Uruguay and looks closer to
the European PAL system when compared to PAL-M.
* pet_cass.xml
- Added Supermon (Toronto PET User Group) [Ken White]
- Replaced bad dump of Side B of Squiggle, Big Time / Monitor (the m command in the monitor now works correctly) [Ken White]
exploit slot devices: [Fabio Priuli]
- moved cart-specific components to the carts itself removing
the fake protection devices from the main system, since they
never belonged there
- removed hacky rom region destruction/construction when a
new cart is inserted, replacing it with proper bank pointers to
the carts (except for ymsnd and ymsnd.deltat region which
will require modernization of the ym devices)
- started re-organization of bootleg boards emulation, so to
reduce the need of collapsing everything into a single cart
type with multiple protection devices, more work is needed
neopcb.cpp: moved to a separate source file the emulation for
JAMMA PCB versions of a few neogeo games, since they don't
have a cartslot. [Fabio Priuli]
neogeo.xml: added information about Japanese titles and
release dates to the software list and aligned the list to the
driver. [Fabio Priuli]
cleaning up the related code. [Fabio Priuli]
saturn.cpp: added emulation of the SegaTap adapter (4 controllers)
and Sega Multitap adapter (6 controllers). Saturn Bomberman
can now be played as intended. [Fabio Priuli]
through slot devices. If you want to launch janshin in the
multislot driver (neogeo) you shall now prescribe
-edge "" -ctrl1 mahjong
and set accordingly the dipswitch. The janshin driver already
comes pre-configured in the proper way, instead. [Fabio Priuli]
you can now configure the controllers available in the multicart
driver (neogeo) with the -crtl1 and -ctrl2 options. when you run single
game drivers (e.g. mslug, or kof94, etc.), instead, a unique controller
is available and cannot be modified. [Fabio Priuli]
intvecs: Converted hand controllers, keyboard and synth to be slot devices,
by using a temporary hack to workaround the impossibility to plug the same
device into 2 different slots as these keyboard require. [Fabio Priuli]
out of whatsnew: in the long term we need to come up with a core solution
for these devices that occupy multiple slot devices at once (another one is
the VCS Compumate which plugs into both VCS control ports), because the
hack I used (a "fake" control port which acts as a passthru for the two real
control ports) is not really satisfactory. However, current solution is better
than the selectable controllers we had, which were (ab)using
PORT_CONDITIONs...
- Remove custom 6845 emulation and use our standard core
- Use the slot system for the parallel interface, fix and implement the
joystick as a slot device and create a printer slot device
- Add support for the RS-232 port
- Add support for the Break key (causes NMI)
make TARGET=mess -j19
will generate all needed files and build MESS, while developing you can use
make TARGET=mess COMPILE=1 -j19
to prevent rebuilding of make files.
Build system have automatic generate of dependencies so will do incremental builds fine.
make clean
will remove all generated files/projects and obj files
Vas Crabb