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TLROM Mapper4 Multifunction MultiGame Cartridge : Download Proteus v7.7 PCB layout file Front : http://www.upload-jpg.com/images.php/707582000/Front.PNG Back : http://www.upload-jpg.com/images.php/b286e2003/Back.PNG Use 404 to enable : http://www.upload-jpg.com/images.php/6c56a2047/A.PNG Use 80 and ...

Works fine with LED :



It should work on 29F040 with three games (256 + 256 + 512). No need for any extra gate for resetting task

I would be interested in having the space to solder a famicom connector. I always end up with pirate FC cart that I would be happy to have some way of connecting to the dumper without the use of an adapter. If you can find the space I think it would be useful for some. Look at Farrid, he almost onl...

M2 is about 3V and after crossing 148 Diode it becomes about 1V. By pushing and holding the reset button M2 becomes 1.25V and after crossing 148 Diode it becomes 1.5V. I couldn't even get 74LS74 work, It does not show any reaction to my reset signal. For 161 it is very unstable and seems to be a lit...

It seems I can't replace 161 with 393 at all. There is a problem with Clock. Enabling 161 count mode require a Low to High signal but for 393 it must be a High to Low signal. So I need an IC which has a Low to High Clock and Active High Reset. Is there any chip like this? I am really confused about ...

I think this is better : http://www.upload-jpg.com/images.php/f87622357/01.PNG But there is still a problem. For enabling Reset of 161 a low voltage is needed but Y3 is producing 0 , 0 , 0 and then 1 so it will not work at all in this way and it will be in a loop on first step but if I just replace ...

Please someone correct my mistakes : http://www.upload-jpg.com/images.php/102fa2039/01.PNG First you need to setup your counter to reset when it counts to three (11 in binary). For that you use an AND port from a 74LS08 with the output connected to the clear pin of the counter... I am not so much ex...

Is there any way to change the function like this :



What TTL should I use for this 3-Mode loop?

One or more of these documents had to be wrong about pin 49 and 56 of Famicom connector : http://wiki.nesdev.com/w/index.php/Cartridge_connector http://benheck.com/Downloads/NES_Famicom_Pinouts.pdf http://nintendoallstars.w.interia.pl/romlab/famconn.gif http://nesdev.com/fam_pinout.txt Somehow I fee...

Is there any schematic for NROM?

Would you agree to share the library for the famicom connector Farid?

For sure. Here you are :

Download Proteus PCB and Schematic

Try to change the schematic for NES.

English is not my native language

What is your language?

By the way, I was wondering what software you were using to design pcb. I am using Proteus 7.7 Also, are you etching them at home? Yes, at home! how you manage to etch double-sided board without running into too much lining issue. I am using a method called Print-Iron : How to make PCBs at home For...

This cartridge is compatible with AT27C080 and AM29F040. I haven't tested it on cartridge yet but it should work. Any kinds of idea for improvement would be appreciated. http://www.upload-jpg.com/images.php/c74f92025/Front.PNG http://www.upload-jpg.com/images.php/701cc2049/Botton.PNG Is there any wa...

if you used an 8-bit binary counter you could make a 256-in-1 multicart How are you calculating it? At normal state we have 27C080 as the largest EPROM which is 1024KB, on the other hand the smallest games are NROM which have 16KB for PRG. By division 1024 to 16 we have 64 games in 1 cartridge at m...