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Neo.raizo

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Hi,
I just used Rastan conversion from @GeorgeSpinner and I’m wondering if it is possible to convert Arkanoid to Tournament Arkanoid.
If someone did it, please let us know.
Thank you.
 

Asure

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The Tournament version needs a specific security IC (MCU) 68705. I'm not sure BuyICnow has the 68705, mcu code is dumped, not sure if they can burn it either.. The rest is eproms.
 

Neo.raizo

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Ok, thank you. I don’t have the necessary device to burn it on myself nor the knowledge.
What are the other eproms to replace if you can write the names, please ?
 

stj

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the mcu is in mame,
does your original have a window to erase it?
 

stj

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ROM_START( arkatour ) // Tournament version
ROM_REGION( 0x10000, "maincpu", 0 )
ROM_LOAD( "a75-27.ic17", 0x0000, 0x8000, CRC(e3b8faf5) SHA1(4c09478fa41881fa89ee6afb676aeb780f17ac2e) )
ROM_LOAD( "a75-28.ic16", 0x8000, 0x8000, CRC(326aca4d) SHA1(5a194b7a0361236d471b24905dc6434372f81252) ) // region byte is 0x92

ROM_REGION( 0x0800, "mcu:mcu", 0 ) /* 2k for the microcontroller */
ROM_LOAD( "a75__32.ic14", 0x0000, 0x0800, CRC(8c20d15c) SHA1(912996bf08de318e19dc420261f554a09dacd443) ) // verified authentic, dumped from actual MCU

ROM_REGION( 0x18000, "gfx1", 0 )
ROM_LOAD( "a75-29.ic64", 0x00000, 0x8000, CRC(5ddea3cf) SHA1(58f16515898b7cc2697bf7663a60d9ca0db6da95) )
ROM_LOAD( "a75-30.ic63", 0x08000, 0x8000, CRC(5fcf2e85) SHA1(f721f0afb0550cc64bff26681856a7576398d9b5) )
ROM_LOAD( "a75-31.ic62", 0x10000, 0x8000, CRC(7b76b192) SHA1(a68aa08717646a6c322cf3455df07f50df9e9f33) )

ROM_REGION( 0x0600, "proms", 0 ) /* BPROMs are silkscreened as 7621, actual BPROMs used are MMI 6306-1N */
ROM_LOAD( "a75-33.ic24", 0x0000, 0x0200, CRC(b4bf3c81) SHA1(519188937ac9728c653fabac877e37dc43c3f71a) ) /* red component */
ROM_LOAD( "a75-34.ic23", 0x0200, 0x0200, CRC(de85a803) SHA1(325214995996de36a0470fbfc00e4e393c0b17ad) ) /* green component */
ROM_LOAD( "a75-35.ic22", 0x0400, 0x0200, CRC(38acfd3b) SHA1(2841e9db047aa039eff8567a518b6250b355507b) ) /* blue component */
ROM_END
 

Neo.raizo

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Great ! This will be useful. Thank you.

If I refer to my PCB :
a75-27.ic17 27C256
a75-28.ic16 27C256

a75__32.ic14 MC68705P5S

a75-29.ic64 27C256
a75-30.ic63 27C256
a75-31.ic62 27C256

a75-33.ic24 MB7116E
a75-34.ic23 MB7116E
a75-35.ic22 MB7116E

27C256 are pretty common as far as I know.
MC68705P5S it’s also OK from buyICnow
MB7116E aren’t so easy to find. I can see 6306-1N on other boards. Which one ? And how can they be burned ?
I can consider buying programmer to play with that can be helpful later.
 

stj

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68705 may be hard to find a programmer for.
i can do it for you if i have to.

6306 / 7116 etc are probably the same between games and can be left - i'll check later
 

Neo.raizo

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I can see A75-03 for IC64 and A75-07 for IC24
(Arkanoiduo if I’m not mistaken= >wrong)
Romset is Arkanoid !
Is this for the MCU images compatibility as I can read in the arkanoid driver sheet ?
 
Last edited:

stj

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i wanted to see if the colour proms needed to be changed.
and they do.
 

Neo.raizo

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That’s precious informations !
How can I burn ic22, ic23 and ic24 color proms ?
 

stj

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with a very old programmer.
i can do a lot of them, a number of other people here can too.

*but* the blanks are hard to get and you cant erase them - so buying of ebay is risky incase they are already programmed.
there is a polish supplier on ebay that may have them - i'll have to check the company name and get back with it.
 

Neo.raizo

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I realize that 27C256 is common but which one ? Could you help me identify compatible model ?

Found in MAME Arkanoid driver :
MMI 63S241 bipolar PROMs. Compatible with MB7116, 7621, DM74S571N etc
BPROMs are silkscreened as 7621, actual BPROMs used are MMI 6306-1N
for a75-07.ic24, a75-07.ic23 and a75-07.ic22
I can find blanks MB7116E.
 

twistedsymphony

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There's a BPROM cross reference here: https://www.mikesarcade.com/cgi-bin/spies.cgi?action=url&type=info&page=PromRef.txt

I don't know about these particular ROMs but it it sometimes possible to replace them with GALs or EEPROMs using an adapter.

I did look at similar conversions on this hardware before an IIRC the MCU was the sticking point for me.

Out of curiosity does anyone know if there's a variant of the 68705 that uses an external bootstrap ROM?
 

Neo.raizo

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The reference for IC17 and IC64 o my board is NEC D27C256AD-20 PGM@12.5V.
Is Toshiba TMM27256AD-20 the same ?
Can be a ST M27256-xxxx compatible ? Or some others form buyicnow ?
 

stj

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all 27256's run the same when being read, it's only programming that varies.
you want the 27c type because they run cooler and use less power

just search ali-express for 27c256-150
the -150 is the speed, lower numbers = faster chips
 

Neo.raizo

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That’s clear.
From buyicnow can I order one of these ?
ST M27C256B-15F1
ST M27C256B-15XF1

What is the difference XF1 vs F1 ?
 

Neo.raizo

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I have to identify 27C256 for IC62, IC63 and IC64.
I can't burn MB7116E. Could someone provide the programming service preferably in France or Europe ? I bear all costs shipping, burning... of course.
 

Neo.raizo

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I received roms from buyicnow (I whish to thank him for his help !).
I replaced to test :

a75-27.ic17 27C256
a75-28.ic16 27C256

a75__32.ic14 MC68705P5S

a75-29.ic64 27C256
a75-30.ic63 27C256
a75-31.ic62 27C256

And no xxx.ic24 xxx.ic23 Xxx.ic22 MB7116E (they are original Arkanoid proms).

Everything seems to work fine, at least the first two levels…
I will try later deeper.
 
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