aotta

RTO is a sdcard based project, so you could store on it all games you want

Unfortunatelly you're not the only one with a reset issue with RTO cart, i had reported some strange behaviours in resetting that i can't reproduce at the moment and so neither resolve. One friends of mine has two RTO carts, one works fine and the other doesn't reset itself, with the same console! Probably the 5-11 way to gnd the pin 12 is "stronger" and works better, and maybe i'd adopt the Chip Enable on/off solution in the next 1.2 release. I'd like to design a cheaper solution based on the Raspberry pico instead of a Teensy. I'm working on others projects actually, but in fall i could recover my intellivision from the box!

Original carts have reset always tied to gnd, so a bad connection may be not an issue, while RTO needs goods contact. You should check all the track in intellivision from reset cartridge pin (no. 12) to the capacitor, and clean it with IPA. This is reset pin:

Do you thank REV because he isn't involved in this project? 😂

I think the hw changes by +5-11under make no difference, to reset the line must go low (gnd) until MSync. No difference for 3v3 or impedance, since the pullup resistor keep the 5v on the intellivision if circuit isn't grounded. But, his reset routine has different logic and timing, and he tested it with intellivision II (I'll probably get one only next month), so it may works better than mine. You could easily replace original resetCart() function with +5-11under's one, and give a try!

Well, the difference is that original carts always tie pin 12 and gnd linked, while RTO drive the line to GND only when needed. You could try a lower resistance to R6 (100 ohm or less), or even a direct link (a wire or a zero ohm resistor) only to check if in that case the RTO starts. [added] you could also try to change the delay time at line 710 and 713 of "ino" code: i made a lot of tests and the value of 6 and 2 milliseconds for the on/off seemed the best for me, but probably different values would work better in your case.

No, i mean original "cartridge", not capacitor.... do you need to test with an intellivision cartridge if it boot to the splash screen of the game without the reset button! The reset circuit in intv is pretty simple: the reset line is keep high as soon as C26 is charged by R15 resistor connected to 5v. All cartridges (and RTO, LTO, etc.) simply pull low to GND the line from connector (line pointed by the green arrow in the pitcure) for reset: The reset button S1 bypass the C26 so it works even with a bad capacitor or resistor. I added a resistor in RTO for further test when my initial attempt to reset the intellivision was a failure, but then i discovered i had a bad C26 (like the 90% of the intellivisions i saw all around ).

Very strange, RTO v. 1.1 does automatic reset at boot and after rom selection, or when pressed button n. 3! Do none of them works with 1uf bipolar electrolytic caps? Do an original Intellivision Cartridge boot itself without reset button? if not, it's not an RTO issue. And, i used both bipolar and polaryzed 1uf electrolytic capacitor in my intellivision and worked fine with automatic reset.

Very nice! The only suggestion i could give is that the black color for the font is not so readable over the library.. but probably you already tested differents colors!

I'm here to share my retrocomputer's passion with other enthusiast, not for selling something. And, for sure, i don't have to answer you (even if you name me several times with @ or increasing the voice with bold or capitalized letters) : if you don't want to waste your time reading, why should do i in summarizing posts for you? I simply pointed you to the right topic (where some good guy found time to recap things to you) but you didn't like it. I continue suggesting you to read and study this forum, you'll learn much about this great console. And, i'll stop answering you, especially in this thread, we both spammed the 5-11under topic too much.

@RockLobster it seems you can use Google but not a Forum... Please read a bit about Forum logic and nétiquette, search options, off topics and PM. I found here all the information needed to built the RTO multicart, if you can't understand the difference from backbit and rto (or rto version by 5-11under) after were written tons of pages, it's not my fault!

No, RTO doesn't use any proprietary "things", only Bin+Cfg. You may ask in backbit thread

Please don't go out of topic.... this thread tends too often to do! 😄 So let's use general RTO 3ad or create a new one for discussing about comparting multicarts on the scene.

Nothing else to suggest you, in my opinion the only way to understand what's wrong is comparing the datasheet of both original VDU and the rearranged on daughterboard one, to get the differences. May be that the daughterboard solution was not 100% compatible with the original IC, that's why would be interesting check with an original Dracula cart. Look if some of your friend could rent it for some test!

AFAIK and as Backbit's creators wrote here, it support only jlp save game feature, not the hardware acceleration.