arturfreddy

We had some complications, but we just produced a first batch of plates.

New update! Now with 4K, 8K and 16K games!

New update! Now with 4K, 8K and 16K games!

First prototype board!

Opa, não programo em ASM, talvez um dia, a implementação do F8 foi apenas um pico de inspiração! rsrsrs Abs

I found a simple way to join 4k and 8k games with a little extra hardware and using the same program. Thank you very much for your help, DrWho198, Blinky, and all who collaborate with this forum!

I found a mistake in the scheme I published a few days ago. I forgot to represent line A0 on pin 2 of IC 74LS74.

I think I helped with my last test! I found a simple way to join 4k and 8k games with a little extra hardware and using the same program.

Yesssss! 4K and 8K games together! https://www.youtube.com/watch?v=rrXZi2l3DFw&feature=em-upload_owner

I did some studies and tests, I was able to make the cartridge with menu having games of 8K and 4K. The scheme is not completely adjusted, I used a V29C51002T instead of the emprom to speed up the tests. arqsaida_old.bin

Alex_79 if I want to make a cartridge using 8K games, the procedure will be the same?

Alex 79, congratulations! I tested the atari! All games work perfectly! Including the reset button!

Alex_79, I did not know the new version of Stella, now worked well, later will test the Atari! Thank you!

Alex 79, see the result! arqsaida2.bin

Added the safenet.bin, the latest games (Keystone, pacman 4k, qbert) do not work, the reactor jumps to the River Raid.

Curious, the menu is offset in relation to the game in a step 5, select the River Raid and access the Enduro, this is happening to everyone. In the end of the menu items: I want my mom open Pacman4k Jaw Breaker open Qbert Tac Scan restarts the menu Keystone Kaper open Demon Attack Lockn Chase open Boing Pacman4k open Cosmic arc Qbert open Defender

I may have made a mistake. megacard.asm

I tested the "megacardmenu_v2_3--all_games_locked" with a set of games that works well, I made adjustments in relation to the amount of games and titles, something strange happens, the menu does not trigger the games correctly and Stella does not work properly.

I do not know how it is possible, but in two Ataris from different manufacturers, and with slightly different speeds, the menu of the program only works well at slower atari. In Brazil it is difficult to find the 74HCT27, I am using 74HC27. 74HC27 will be the cause of instability in faster atari?

Sorry, there was a mistake in the scheme. Here is the corrected scheme (74HCT02).

Some games, such as Qbert, Keystone Kapers, among other, possibly interfere with bankswitch address of the circuit, I found a simple solution that corrects this problem.