Atari System 1 Multiple Cartridge High Score Save

[GadgetFreak]

If you have an Atari System 1 and multiple carts it will reset the NV memory every time you change cartridge. Strangely though, Atari did actually design the board to allow the NV socket to accept a 2816 even though they only used a 2804. This patch along with a 2816 will allow your main board to keep all the scores/settings for all 5 available cartridges at the same time.

You will need to patch either the 205/206 or 114/115 bios eproms on your system 1 main board and replace the 2804 at F15 or E13

As with all my High Score Patches, please post a reply or click thanks if you find this patch works for you.

136032.205.l13

[b]26F5: change these bytes  43 00 00  to  4E 00 7D[/b]

[b]2734: change these bytes  43 00 00  to  4E 00 7D[/b]

[b]2790: change these bytes  35 00 25 00  to  4E 00 7D 4E[/b]

[b]27D2: change these bytes  47 00 00  to  4E 00 7D[/b]

[b]
[/b]

[b]These bytes should all be 00 before you changes them.[/b]

[b]3E80: 48 20 74 14 00 00 0C 00 66 00 53 C4 03 43 00 00[/b]

[b]3E90: D2 4C 00 4E 48 20 74 14 00 00 0C 00 66 00 53 C4[/b]

[b]3EA0: 03 47 00 00 D6 4C 00 4E 48 20 74 14 00 00 0C 00[/b]

[b]3EB0: 66 00 53 C4 03 93 35 00 25 00 4C 00 4E 4C[/b]

136032.206.l12

[b]26F5: change these bytes  F9 F0 01  to  B9 00 00[/b]

[b]2734: change these bytes  F9 F0 01  to  B9 00 00[/b]

[b]2790: change these bytes  49 16 48 18  to  B9 00 50 71[/b]

[b]27D2: change these bytes  F9 F0 01  to  B9 00 28[/b]

[b]
[/b]

[b]These bytes should all be 00 before you changes them.[/b]

[b]3E80: E7 00 00 39 01 6E 02 05 00 04 02 FC 00 F9 F0 01[/b]

[b]3E90: C2 DF 04 75 E7 00 00 39 01 6E 02 05 00 04 02 FC[/b]

[b]3EA0: 00 F9 F0 01 C2 DF 04 75 E7 00 00 39 01 6E 02 05[/b]

[b]3EB0: 00 04 02 FC 00 C2 49 16 48 18 DF 04 75 07[/b]

Or

136032.114.j11

[b]2377: change these bytes  43 00 00  to  4E 00 6F[/b]

[b]23E0: change these bytes  43 00 00  to  4E 00 6F[/b]

[b]242C: change these bytes  35 00 25 00  to  4E 00 6F 4E[/b]

[b]246E: change these bytes  47 00 00  to  4E 00 6F[/b]

[b]
[/b]

[b]These bytes should all be 00 before you changes them.[/b]

[b]3780: 48 20 74 14 00 00 0C 00 66 00 53 C4 03 43 00 00[/b]

[b]3790: D2 4C 00 4E 48 20 74 14 00 00 0C 00 66 00 53 C4[/b]

[b]37A0: 03 47 00 00 D6 4C 00 4E 48 20 74 14 00 00 0C 00[/b]

[b]37B0: 66 00 53 C4 03 93 35 00 25 00 4C 00 4E 84[/b]

136032.115.j10

[b]2377: change these bytes  F9 F0 01  to  B9 00 00[/b]

[b]23E0: change these bytes  F9 F0 01  to  B9 00 00[/b]

[b]242C: change these bytes  49 28 48 2A  to  B9 00 50 71[/b]

[b]246E: change these bytes  F9 F0 01  to  B9 00 28[/b]

[b]
[/b]

[b]These bytes should all be 00 before you changes them.[/b]

[b]3780: E7 00 00 39 01 6E 02 05 00 04 02 FC 00 F9 F0 01[/b]

[b]3790: C2 DF 04 75 E7 00 00 39 01 6E 02 05 00 04 02 FC[/b]

[b]37A0: 00 F9 F0 01 C2 DF 04 75 E7 00 00 39 01 6E 02 05[/b]

[b]37B0: 00 04 02 FC 00 C2 49 28 48 2A DF 04 75 07[/b]

 

[Alpha1]

Wow dude. That's really great work. Have you posted this on KLOV?

 

[GadgetFreak]

I actually came up with this patch at the end of last summer, I did post a thread on this forum but no one seemed interested at the time. Anyway as I am now posting lots of High Score patches I thought I should post this too. I haven't posted it anywhere else, so feel free

 

[Digimon]

Done today;-)

works fine on my LSI.

Thanks for the great patch.

 

[iamjimmi]

Nice work... And thanks for sharing...

 

[Digimon]

Thanks, I will do it in all my System 1 Main PCBs.
(But I run out of 27128

for Peter Packrat an Indy.

And everthing should be prepared for the Multi Kit...

 

[GadgetFreak]

BTW Just a quick post to say that this patch is in my Arcade Rom Patcher which will save you all that 80's type in stuff

 

[Digimon]

Did it on another Main Board, without removing out of the cab.

This time it was the TTL Version.

Works perfect, thanks for the cool stuff!

 

[Valtric59]

When i read this topic, i remember that the st-v system resets the scores when you change the cart, or when the cart is not detected when you poweron the cabinet (when cart moved a little when cabinet powered off)......