Danjovic

Happy New Year Folks!!!

Same here, lol! As we are today the SNES controller was the winner, let alone that it's interface intentionally leaves alone the pins used by the Savekey to bitbang I2C to the eeprom chip.

There are more things to consider, though: The static nature of the shift registers of the SNES controllers allows the button reading cycles to be spread along the code. You can do that on a Genesis controller but you must take care for the internal 3ms timeout that resets the sequential logic of the button multiplexer. The cross layout of the SNES action buttons provides the ability to emulate two controllers at the same time, and that is a winner for games like Robotron and Petscii Robots. One advantage of the Genesis controller over the SNES controller is the capacity to work on existing games (with the adaptor plugged in of course) (edit: that will require adding a switch on the adapter)

I've been down that road already: SNES 533 cycles or ~447us Genesis (6 button) 306 cycles or ~257us

Knight Rider? 🤣

AT-26 Chuck Adapter for playing Atari 2600 with Wii Nunchuck, with or without the accelerometers: https://hackaday.io/project/7944-at26-chuck

For sake of completeness here's the last custom controller I have built - A Driving Controller. The case was upcycled from a remote control unit for RC car that have been laying for years on my parts bin (only the remote, not the toy cars, lol)

I can think of: Availability of Off-the-shelf boxes and Knobs; aesthetics (built-in button cutout on some plastic cases); ergonomics (left/right handed usage)

The CBS Booster Grip joystick add-on adds two extra buttons over the paddle lines.

The DIY Control Freak is an USB adapter that can handle Atari Joysticks, Paddles and Driving controllers using the same firmware.

And here's a DIY Keypad Controller

You can use the readily available rotary encoders to build a new driving controller, but there is an issue with sensitivity because original encoders provides 16 steps per turn while most modern encoders provide 20 or 24 steps.

And here's a DIY Track & Field controller

My DIY approach:

Precisely !! Nice suggestion, thanks!!

Thanks! Your game looks amazing. I am sure that the time you may spend to figure out what went wrong and fix the game will pay off! It was just an idea on how to use a 2600 to bring joy to parties and retro meetings, and at the same time make an unconventional game. It is more a quiz bowl, the first to press have the right to answer the question. It was also an exercise on Batari Basic Programming.

Hoff New Year!!!

Full solution: lda byte1 eor byte2 sta temp lda #0 ldy #8 loop: rol temp adc #0 ; a = a + 0 + carry dey bne loop at the end a holds bit count.

You can take out the MCP42100 from its socket and insert a 100k resistor between pins 9 and 10 and check the X axis reading (pins 5 and 6 for Y axis) If the reading reaches the maximum value then you either have a problem with your digipots or with the code driving it. On the other hand, if the value remains low, triple check the capacitors (measure them if possible). Check also the voltage value at pin 9 of the db-15 connector (potC).

Check the timing capacitor values.

Finally assembled the DIY keyboard controller I have proposed some posts ago (link). I would like to rectify the schematics as the membrane keyboard that I have acquired have a different wiring than the one I have planned to use.

DIY Atari Keypad Controller built with off the shelf components (link) Schematics

Cut the box to fit the board. It demanded a lot of handiwork, which is OK for a DIY project, but may render a serialization unworkable. In that case two options should b considered Machine a COTS box on a CNC. Custom 3D print (that nowadays can be ordered online)

Q-Suco (and later Ki-Suco), was a very popular drink in Brasil. The translated brand name can be interpreted as "What a Juice". Do not remember a video game related campaign, though.