if it is not a hurry, i could bring those rams to the eurocade...

i bought some 4164 NOS (>200 pieces i guess) - so i have a lot as spare

i made the hack without a connector by (afair) soldering pin 5 and 6 of the male connector (on the main pcb) together and removing the +12(pin 5) and -5v(pin 9) wire from the female connector

i am not 100% of this - i need to check it...

the 4164 could be plugged into the sockets without bending or wiring any pins.

WOW!, is that available at IKEA ? 

lol, i thought exactly the same 

i didn't know that taito built discrete logic games until 79...(on some of the ttls, the production date can be seen)

so i searched for taito ttl found this one:

http://www.citylan.it/wiki/index.php/Zun_Zun_Block_(TTL)

i just checked the lot of switches on the upper pcb

i had the similiar issue with asteroids...resetting from time to time...

check if the cpu is a 6502A (asteroids runs on 1,5 mhz)

but the problem that i had was a bad cpu-socket.

Something like that?

http://www.ebay.com/itm/GALAXIAN-High-Score-Save-Kit-/281601194272

I wanted to buy one but $45 + $27 shipping is a bit too much for me these days.

yes, something like that, but no nvram. a nvram has the disadvantage that there is a battery inside (the dallas chips are already old, so i do not know how long the battery will last)

i use a serial eerprom.(no batteries anymore). the only limitation on a serial eeprom are about 1 million write cycles.

and there are software dips included. that means there is a menu at startup where you can change your settings.
and all the "standard" routines e.g. free play attract mode...


@andre: i didn't plan a multi kit - only for galaxian and uploading highscores would be there of course

edit: the online option will be ALWAYS available on ALL kits i will do

edit2; okay, except the bumpNJump saveKit (because the code is decrypted and it was a pain in the ass already to decrypt my own code for saving and loading highscores) - maybe someday if there is a loooot of time

wow, the 2cv is just cool!

mame is always good for memory-maps...

the system1-memory map

https://github.com/mamedev/mame/blob/master/src/mame/drivers/system1.c

starting at line 732

tyrems tempest tube has similiar burns - the good thing is: it can not be seen because of 2 reasons...

there is no light background like on an standard-monitor (e.g. the blue backgroundcolor in qbert)..

and the dark bezel hides a lot as well