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model2.cpp: attempt fixing skytargt gameplay speed (nw)

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This commit is contained in:
angelosa 2018-03-09 01:16:09 +01:00
parent b5e2246ce3
commit ecf680a53e
1 changed files with 6 additions and 3 deletions
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9
src/mame/drivers/model2.cpp
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@ -33,7 +33,8 @@
- manxtt: no bikes are visible (not a z-sort issue!);
- manxtt: course select island map doesn't rotate properly (matrix issue?);
- sgt24h: first turn in easy reverse course has ugly rendered mountain in background;
- skytargt: really slow during gameplay;
- skytargt: really slow during gameplay (fixed?);
- skytargt: short draw distance (might be down to z-sort);
- srallyc: some 3d elements doesn't show up properly (trees models, last hill in course 1 is often black colored);
- vcop: sound dies at enter initial screen (i.e. after played the game once) (untested);
- vcop: lightgun input is offsetted (needs to be calibrated in service mode);
@ -218,7 +219,8 @@ uint32_t model2_state::copro_fifoout_pop(address_space &space,uint32_t offset, u
/* spin the main cpu and let the TGP catch up */
// TODO: Daytona needs a much shorter spin time (like 25 usecs), but that breaks other games even moreso
// @seealso http://www.mameworld.info/ubbthreads/showflat.php?Cat=&Number=358069&page=&view=&sb=5&o=&vc=1
m_maincpu->spin_until_time(attotime::from_usec(25));
// Update: skytargt needs an ever smaller time otherwise gameplay is too slow.
m_maincpu->spin_until_time(attotime::from_usec(1));
// fix ld rN, (rN) case, ask desert, pltkids, zerogun ...
return 0x00884000+offset*4;
@ -1285,7 +1287,8 @@ WRITE32_MEMBER(model2_state::model2_serial_w)
m_scsp->midi_in(space, 0, data&0xff, 0);
// give the 68k time to notice
m_maincpu->spin_until_time(attotime::from_usec(40));
// TODO: 40 usecs is too much for Sky Target
m_maincpu->spin_until_time(attotime::from_usec(10));
}
}
if (ACCESSING_BITS_16_23 && (offset == 0))