> Sent: Sunday, September 06, 2009 7:25 AM
> To: submit@mamedev.org
> Cc: atariace@hotmail.com
> Subject: [patch] Deglobalize input.c
>
> Hi mamedev,
>
> These patches deglobalize input.c. The first adds running_machine to
> some driver apis. The (large) second patch adds the machine parameter
> to the most input_code_pressed apis (generated by script, not
> compilable). The last patch then actually changes those apis and
> others to take running_machine, and adds struct _input_private to hold
> the input state variables.
>
> ~aa
> Sent: Saturday, September 05, 2009 2:11 PM
> To: submit@mamedev.org
> Subject: I386: fix loop instructions when address_size is 16-bit
>
> Original code always assume address_size to be 32-bit
> The patch will use the correct size based on the status of the
> address_size flag.
>
- Corrected ROM loading behavior for SuperFX games
- Added more ROM mirroring needed by certain SuperFX 2 games
- Corrected the behavior of certain bit-restricted SuperFX registers. Doom, Yoshi's Island, Dirt Trax FX and Voxel Demo show things now.
- Improved S-DD1 emulation, neither game using S-DD1 boots yet
Fixed a register naming issue in the MIPS core [Harmony]
Numerous SuperFX updates: [Harmony]
- Hooked up RAM and ROM buffering
- Inlined several more functions
- Removed debug spew
- Added the ability to define an external IRQ line callback, and hooked it up to the 65C816
- Fixed flag calculation for HIB opcode
- Hooked SuperFX chip up to the SNES machine driver
- Inlined a number of functions for possible speed increase
- Removed some memory buffering cruft, to be re-added later
- Fixed behavior of ASR opcode
- With additional MESS-side changes, Stunt Race FX is playable, and Vortex shows much more.
- Fixed disassembly of LMULT/FMULT ops
- Fixed reads using LDW/LDB
- Fixed writes using STW/STB
- Fixed SBC carry behavior
- Fixed GETC ROM access behavior
- Some SuperFX games begin to show things in MESS
- Indirect addressing was not taking into account special purpose memory mapped locations.
- 'iorlw' instruction was saving the result to memory instead of the W register.
- 'tris' instruction no longer modifies Port-C on PIC models that do not have Port-C implemented.
Also added difficulty DIP to BigTwin
> -----Original Message-----
> From: Gabriele Gorla [mailto:gorlik@penguintown.net]
> Sent: Saturday, August 29, 2009 5:39 AM
> To: submit@mamedev.org
> Cc: Gabriele Gorla
> Subject: Re: i386: fix carry/borrow flag in ADC/SBB
>
> > the original code implements ADC and SBB as 2 consecutive ADDs.
> > This will not produce the correct result when the carry is generated
> by
> > the first addition as it is overwritten by the second operation.
>
> updated patch, fixes a typo.
- Disabled RAM/ROM clocking, going with instant transfer for now
- Understood and re-enabled pipelined instruction architecture, Star Fox runs farther
- Fixed a ridiculous typo in ROL instruction
- Corrected carry flag behavior in ROL opcode
- Corrected BRA target address calculation (maybe still wrong)
- Corrected LOOP target address calculation
- Made sure that FROM sets cpustate->sreg_idx
http://www.mameworld.info/ubbthreads/showthreaded.php?Cat=&Number=199853&page=0&view=expanded&sb=5&o=&fpart=1&vc=1
I don't know this z80 emulator well enough to look into his first two points. Juergen?
1/ In the cc_xy[] table which lists instructions with DD or FD prefixes, "illegal" combos are returning 4 cycles when they should return 4 + cc_op (the normal instruction being executed). Another way to handle this correctly is to call EXEC(z80,fd,xx) or EXEC(z80,dd,xx) instead of op_xx(z80) when such pair of opcode is detected, to be sure the correct amount of cycles is used.
2/ According to Sean Young, R register is NOT incremented when chaining multiple DD or FD prefixes: [...]
This one was already fixed, dunno when:
2/ In the cc_ed[] table, INI (ED A2) and IND (ED AA) should return 16 cycles, like other instructions from this group, not 12. This seems to be a typo error.
- added unidasm to the tools build
- split the disassemblers out of libcpu and into new libdasm
- ensured the disassembly entry points for all disassemblers are
in the source file for the disassembler (sometimes new generic
versions were created)
Still needs command line options and file loading, but the
fundamentals are present, and it links.
- added cycle tables and cleaned up source layout. This was done very carefully, it should be errorfree.
- removed HLT cycle eating (earlier, HLT after EI could theoretically fail)
- fixed parity flag on add/sub/cmp. Bug was caused by z80 overflow detection accidentally left in
- renamed temp register XX to official name WZ
- renamed flags from Z80 style S Z Y H X V N C to S Z X5 H X3 P V C, and fixed X5 / V flags where accidentally broken due to flag names confusion
- Fixed X/Y flags in CCF/SCF/BIT, ZEXALL is happy now
- Simplified DAA, renamed MEMPTR (3.8) to WZ (same temp register as the officially named WZ in the 8080), added TODO
the cycle fix by Marshmellow, in the 3.9 z80.c comments was already committed in june, just added there for documentation
integers. This is defined to be "I64" on MSVC and recent mingw compilers,
and "ll" for all others.
Updated all instances of 64-bit prints to use the new macro.
Sent: Friday, August 07, 2009 9:33 AM
To: submit@mamedev.org
Subject: z180 daatable removed
Since I removed the daatable from i8085, and the z180 one is exactly the
same, I might as well remove that one too, see attached diff.
hap
Sent: Friday, August 07, 2009 6:45 AM
To: submit@mamedev.org
Subject: spacwalk dips and player2 support
Hello,
Attached is a diff for 0133u1 Space Walk that adds game time and coinage
DIP switches, as well as service mode and input test. DIP switches 5 and 6
are still unknown. It also adds support for the 2nd controller and
coincounter, similar to clowns. I've removed the GAME_NOT_WORKING flag, since
other than a glitch with the CPU controlled pad on the left side, the gameplay
is working fine. The fact that the middle section is inaccessible looks
deliberate: there's probably a vertical-shape object in the original artwork
the clown (astronaut in this case:P) can bump into.
Greets,
hap
