Konami scramble missing parts

[anunaki]

Hi,

I got myself a Konami Scramble board that seems to miss some stuff on it.

The board looks OK and starts up with scrambled picture (uhum)

I mark the place I think roms and something else is missing



the upper board looks complete



I hope you guys can help me ID the missing stuff, so I can complete the board

Greetz, Patrick

[Etienne MacGyver]

When a socket is empty, it does not always mean that its missing something for the game.

it could very well be the case that there is nothing missing 

[anunaki]

i know, but I found some very small picture that had 2 eproms on the empty spots.

I'not sure about the white socket

i haven't found a manual or good pic yet 

[Belike]

The big one is a Z80A processor, the small ones are B2708 MOS I.C. 1024X8 eproms.
I have the pcb and the manual also, if you need pics or anything else, just let me know.

[anunaki]

That's great news, I have quite some brand new Z80 chips and some used also. Hopefully the right one is also there.

I really like to have something that has the names of the roms on it (manual or pic). It will be a challence to get the right eproms though.

Tx

[Belike]

These eproms are quite common as far as I know and the datas are downloadable from romnation.net.
I will send you some pics tomorrow.

[anunaki]

I'm sure I can get the eproms, I already got the roms

but to prgramm a B2708, that's the hard part

[Robinholland]

This pcb have no 2708 rom's

[Belike]

[level42]

If it needs 2708s (although I trust Robin's word) you can still use 2716s with a little modding....

I have 2716 and 2732 on stock.

[anunaki]

Thanks Bela,

The Lay-out in that schematic differs from the one of the PCB in my picture, doesn't it. I see row 2 and 2X in the schematics, maybe this is a different view of the same row?

(Is this maybe the Zaccaria Scramble version (I have that PCB also, but I'm not at home right now))

[Etienne MacGyver]

Yep, Zaccaria has its own boardset:

this is what is on paul swan's site, that picture looks like the one in the manual:

[Belike]

Let me check in the afternoon, I have 2 pcbs, a Konami and Stern.

[Belike]

Robin was right, the Konami version has the TMS 2516 eproms (labelled as Stern) and a D780C processor which is a replacement of the Z80 afaik.
The Stern pcb has the same eproms but there is a Z80A processor.
Some pics from the Konami pcb:

[anunaki]

Thanks alot Bela

Can I put a Z80 in the socket instead of this D780C?