Re: Sidam Asterock wont coin up

Below is the Asterock free play patch which required only the sidamas.2
rom be modified for the hack to work. The code has been successfully
tested in mame with a handful of plays and it is functional. YMMV on
actual hardware so let me know if you encounter an issue and I will take
a second look.

The sidamas.2 rom is the only rom which requires modification and is
mapped between 0x6800 and 0x6BFF on the Asterock hardware.

Old Code:
     0x68ED LDY $6F ;// credit count is stored at 0x006F

New Code:
     0x68ED LDY #$02 ;// load y register with value of 2 credits

Using your favorite hex editor, modify the sidamas.2 file beginning at
offset 0x00ED and replace the following two bytes:

     0x00ED 0xA4 ==> 0xA0
     0x00EE 0x6F ==> 0x02

Fluke 9010 checksums for in circuit verification

     Original sidamas.2 rom = 0x388F
     Patched sidamas.2.freeplay rom = 0x0DE3

On 11/1/2012 1:44 AM, Andrew Welburn wrote:
> That was my next thinking, some kind of patch to hit start and just
> jump right into a game... the romset it uses is the same as in Mame
> 'asterock' - verified in-circuit with crc-32's listed in the driver.
>
> would be marvellous if its just a 1-2 rom exchange to do this..
>
> Andrew Welburn
> http://www.andys-arcade.com
>
> On 31/10/2012 19:39, vectorlist-steve wrote:
>> Which version of the Asterock roms are you running? Although not a fix,
>> I might be able to send you a free play patch as a temporary workaround.
>>
>>
>> On 10/31/2012 8:20 AM, Andrew Welburn wrote:
>>> as expected.. it didn't work in the cabinet... So its currently in
>>> limbo.
>>>
>>>
>>> Andrew Welburn
>>> http://www.andys-arcade.com
>>>
>>> On 30/10/2012 18:04, vernimark wrote:
>>>> What about this ASTEROCK in the end? I’m curious
>>>>
>>>> ------------------------------------------------------------------------
>>>>
>>>>
>>>> *From:*owner-vectorlist@vectorlist.org
>>>> [mailto:owner-vectorlist@vectorlist.org] *On Behalf Of *Andrew Welburn
>>>> *Sent:* sabato 13 ottobre 2012 1.22
>>>> *To:* vectorlist@vectorlist.org
>>>> *Subject:* Re: VECTOR: Sidam Asterock wont coin up
>>>>
>>>> As mentioned in a previous post, you need 23v DC unregulated to
>>>> trigger
>>>> the inputs 5v won't do it.. 12v just about does it, but I'm using the
>>>> proper 23vdc for the inputs...
>>>>
>>>> The schems and wiring diagram are scanned and online, you'll see how
>>>> it's wired on there, I have it all correct...
>>>>
>>>> I might just end up sending the Pcb back to the owner to try in his
>>>> cab,
>>>> but there is no reason this shouldn't be working on the bench the
>>>> way I
>>>> have it wired, hence my post...
>>>>
>>>> Sidam also uses this wacky 23v for inputs on Explorer and Missile
>>>> Storm.. I haven't looked at my Sidam centipede, but I bet that does
>>>> too,
>>>> those wacky Italians.
>>>>
>>>> Andrew Welburn (mobile)
>>>>
>>>> www.andys-arcade.com <http://www.andys-arcade.com>
>>>>
>>>>
>>>> On 12 Oct 2012, at 22:48, Andre Huijts <a.huijts@upcmail.nl
>>>> <mailto:a.huijts@upcmail.nl>> wrote:
>>>>
>>>>> Hey I happen to own a working Asterock :)
>>>>>
>>>>> I remember that this has puzzled Andreas who fixed my Asterock
>>>>> boardset too. He repaired it up to working attract mode but couldn't
>>>>> coin it up whatever he tried. In the end, he just shipped it back to
>>>>> me in the hope that it would just work in the cabinet. Which it
>>>>> indeed
>>>>> did, and still does.....
>>>>>
>>>>> The inputs of Asterock expect a +5V instead of a shorting to the GND
>>>>> !! However, we knew this but still Andreas couldn't credit it when he
>>>>> shorted +5V to the inputs.........
>>>>>
>>>>> I never investigated it further because well....it works in the
>>>>> cab....:)
>>>>>
>>>>> I do assume you have the schematics ?
>>>>>
>>>>>
>>>>> Verstuurd vanaf mijn iPad
>>>>>
>>>>>
>>>>> Op 12 okt. 2012 om 23:35 heeft Andrew Welburn <andy@andysarcade.net
>>>>> <mailto:andy@andysarcade.net>> het volgende geschreven:
>>>>>
>>>>>> Yes indeed, all roms verify with the ones in Mame. Verified
>>>>>> in-circuit with crc32's.
>>>>>>
>>>>>> Andrew Welburn (mobile)
>>>>>>
>>>>>> www.andys-arcade.com <http://www.andys-arcade.com>
>>>>>>
>>>>>>
>>>>>> On 12 Oct 2012, at 22:06, vectorlist-steve
>>>>>> <vectorlist@arcadehacking.com <mailto:vectorlist@arcadehacking.com>>
>>>>>> wrote:
>>>>>>
>>>>>>> Andy,
>>>>>>>
>>>>>>> Have you verified your roms/eproms ?
>>>>>>>
>>>>>>>
>>>>>>> On 10/12/2012 2:02 PM, Andrew Welburn wrote:
>>>>>>>
>>>>>>>> All inputs operate properly, slam, diag step, test, hyper, rot
>>>>>>>> left, rot right, thrust fire, start1, start2.. Each one beeps
>>>>>>>> as an
>>>>>>>> input in test mode, as well as reads properly at its correct
>>>>>>>> address through the cpu socket (on my fluke) none are stuck...
>>>>>>>>
>>>>>>>> Andrew Welburn (mobile)
>>>>>>>>
>>>>>>>> www.andys-arcade.com <http://www.andys-arcade.com>
>>>>>>>>
>>> ---------------------------------------------------------------------------
>>>
>>>
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>>> ** Please direct other questions, comments, or problems to
>>> chris@westnet.com
>>
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>>
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>>
> ---------------------------------------------------------------------------
>
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Received on Thu Nov 1 16:22:58 2012