Usage is very similar to PORT_CUSTOM. See the Astro Invader driver for an example
- Removed input_port_set_changed_callback and converted all users to PORT_CHANGED
The only difference between the old callback and the ones supplied by PORT_CHANGED is
that values passed by PORT_CHANGED are normalized to start at bit 0, just like
PORT_CUSTOM.
suffixed with _func. Did this throughout the core and
drivers I was familiar with.
Fixed gcc compiler error with recent render.c changes.
gcc does not like explicit (int) casts on float or
double functions. This is fracking annoying and stupid,
but there you have it.
video_screen_get_time_until_update().
Fixed CCPU and QB3 to no longer rely on cpu_scalebyfcount().
Fixed busted timing in the CCPU core. Changed watchdog to
count internally rather than using external watchdog support.
Altered CCPU to accept interrupt signals from the driver.
Updated clocks in the cinemat driver to be derived from the
clock crystal.
* Illustrates how to keep existing memory read/write handlers
This is slower than caching the device interface, but does not have an impact on
devices accessed at a low frequency like in this case.
* added ATTR_FORCE_INLINE to osdcomm.h
* added ATTR_NONNULL
* moved U64 S64 fram mamecore.h to osdcomm.h
* define SETJMP_GNUC_PROTECT() in osdcomm.h for use in ppc602, ppc603
- Added a video_screen_register_vbl_cb() function for registering VBLANK callbanks
- Changed inptport.c and debugcpu.c to make use the VBLANK callbacks
- Added video_screen_get_time_until_vblank_start()
- CCPU and anything using cpu_scalebyfcount() are currently broken
- I did some fairly extensive testing, but this is a very signficant internal change,
so some things may have broke
to use the macros.
Added the concept of device classes. Devices specify their class
in their get_info function. Classes can be used to walk through
devices at a more general level than their type. Functions have
been added to iterate through devices by class just as you can
by type.
Removed some unused fields from device_config.
- Since the Commodore 40xx computers program an HSYNC width that extends past the end of
the scanline, I am clamping it in lack of anything better to do.
- Define a new MDRV_CPU_VBLANK_INT_HACK() (ZV: defined in deprecat.h) which is a copy of the current MDRV_CPU_VBLANK_INT()
- Find all the places where VBLANK_INT is used with something other than 1 interrupt per frame and change it to the new macro
- Remove the "# per frame" parameter from the MDRV_SCREEN_VBLANK_INT() and add a screen tag in its place; updated all callers appropriately.
- ZV: Added some validation of the interrupt setup to validate.c
The idea behind this is that using a VBLANK interrupt with more than one interrupt per frame in conceptually wrong.
The screen tag will allow us to move the interrupt timing code from cpuexec.c to video.c, where it really belongs.
Subject: A fix for the z80pio
Hi there,
Here is a one-line fix for the z80pio.
At the moment when the interrupt control word is sent (with interrupts
enabled), an interrupt occurs. In reality, interrupts are disabled until
the interrupt mask byte is sent.
