GadgetFreak
Active member
Not sure if this is of interest to anyone but have recently been playing my with Atari System 1 but was getting fed up with the settings/scores getting reset whenever I changed cart so I decided to do something about it 
It is a really straightforward mod as Atari kindly hooked up the extra address lines required but never used them as standard. So its just a chip swap for the memory and reprogramming of 2 eproms. Due to the largest data block (Road Runner) not using the whole 512 bytes I have been able to fit all 5 available games into 2048 bytes easily.
I am on the look out though for '136032.105.l13' which is one of the revision 1 TTL main board roms as the Mame dump is of a blank chip! I have generated the mods for the Rev2 board & the LSI board so far but would like to cover them all.
It is a really straightforward mod as Atari kindly hooked up the extra address lines required but never used them as standard. So its just a chip swap for the memory and reprogramming of 2 eproms. Due to the largest data block (Road Runner) not using the whole 512 bytes I have been able to fit all 5 available games into 2048 bytes easily.
I am on the look out though for '136032.105.l13' which is one of the revision 1 TTL main board roms as the Mame dump is of a blank chip! I have generated the mods for the Rev2 board & the LSI board so far but would like to cover them all.
