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looping: some improvement to mcu support

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This commit is contained in:
Roberto Zandona 2009-08-09 15:20:29 +00:00
parent db6150b7bb
commit e0d1e470c0
1 changed files with 6 additions and 6 deletions
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12
src/mame/drivers/looping.c
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@ -431,12 +431,14 @@ static WRITE8_HANDLER( plr2_w )
static READ8_HANDLER( cop_io_r )
{
return cop_io[offset];
// if (offset == 1) return mame_rand(space->machine) & 0x01;
return 1; // cop_io[offset];
}
static WRITE8_HANDLER( cop_io_w )
{
cop_io[offset] = data;
if (offset == 0) logerror("%02x ",data);
}
static READ8_HANDLER( protection_r )
@ -456,12 +458,10 @@ static READ8_HANDLER( protection_r )
// it is trivial to bypass the protection.
// cop write alternately $02 $01 $08 $04 in port $102
// cop write randomly fc (unfortunatly) but 61,67,b7,bf,db,e1,f3,fd,ff too and only these values
// wrong!?
if(cop_io[2] == 1) return 0xff;
if(cop_io[2] == 2) return 0xfd;
if(cop_io[2] == 4) return 0xf7;
if(cop_io[2] == 8) return 0xf3;
// missing something
if(cop_io[0] != 0xfc) return cop_io[0];
return 0xff;
}