<![CDATA[ChipMusic.org - MBC5 Clone in CPLD]]> https://chipmusic.org/forums/topic/2988/mbc5-clone-in-cpld/ Tue, 08 Oct 2013 13:09:22 +0000 PunBB <![CDATA[Re: MBC5 Clone in CPLD]]> https://chipmusic.org/forums/post/187239/#p187239 Jazzmarazz says:

Was this made available yet? I don't want it because I would like the practice in making my own, but just Inc case I have difficulty.;)

]]> Tue, 08 Oct 2013 13:09:22 +0000 https://chipmusic.org/forums/post/187239/#p187239 <![CDATA[Re: MBC5 Clone in CPLD]]> https://chipmusic.org/forums/post/142532/#p142532 DSC says:

Curious to what hardware transfererr you are using to change out roms?
Very cool!

]]> Sat, 17 Nov 2012 22:54:33 +0000 https://chipmusic.org/forums/post/142532/#p142532 <![CDATA[Re: MBC5 Clone in CPLD]]> https://chipmusic.org/forums/post/142522/#p142522 xzakox says:

Yes, it's a am29f016, I have some of them lying arround, but the cart also supports the am29f032 for 32mbit.

Video!:

http://www.youtube.com/watch?v=94JNGmD8vFc

]]> Sat, 17 Nov 2012 21:26:33 +0000 https://chipmusic.org/forums/post/142522/#p142522 <![CDATA[Re: MBC5 Clone in CPLD]]> https://chipmusic.org/forums/post/142480/#p142480 nitro2k01 says:

Oh shit! Looked at the wrong chip. Yeah, disregard the question.

]]> Sat, 17 Nov 2012 18:58:46 +0000 https://chipmusic.org/forums/post/142480/#p142480 <![CDATA[Re: MBC5 Clone in CPLD]]> https://chipmusic.org/forums/post/142471/#p142471 kitsch says:

AM29F016D, by spansion

here's the datasheet: http://www.spansion.com/Support/Datashe … 1444e9.pdf

unless you were asking for the ram

]]> Sat, 17 Nov 2012 18:36:15 +0000 https://chipmusic.org/forums/post/142471/#p142471 <![CDATA[Re: MBC5 Clone in CPLD]]> https://chipmusic.org/forums/post/142469/#p142469 nitro2k01 says:

xzakox, which flash chip is that?

]]> Sat, 17 Nov 2012 18:34:33 +0000 https://chipmusic.org/forums/post/142469/#p142469 <![CDATA[Re: MBC5 Clone in CPLD]]> https://chipmusic.org/forums/post/142465/#p142465 xzakox says:

One picture of the WIP cart:

]]> Sat, 17 Nov 2012 18:31:31 +0000 https://chipmusic.org/forums/post/142465/#p142465 <![CDATA[Re: MBC5 Clone in CPLD]]> https://chipmusic.org/forums/post/141983/#p141983 nitro2k01 says:

Zako, you need to come to #gbdev again.

]]> Thu, 15 Nov 2012 05:23:12 +0000 https://chipmusic.org/forums/post/141983/#p141983 <![CDATA[Re: MBC5 Clone in CPLD]]> https://chipmusic.org/forums/post/141982/#p141982 Toastypinecone says:

Wow! :DD Looks rad!

]]> Thu, 15 Nov 2012 05:21:25 +0000 https://chipmusic.org/forums/post/141982/#p141982 <![CDATA[Re: MBC5 Clone in CPLD]]> https://chipmusic.org/forums/post/141954/#p141954 abrasive says:

nice work!

so satisfying getting that stuff working. (the drag'n'derp has a MBC5/3.3v cpld-based design also.)

]]> Thu, 15 Nov 2012 02:49:53 +0000 https://chipmusic.org/forums/post/141954/#p141954 <![CDATA[Re: MBC5 Clone in CPLD]]> https://chipmusic.org/forums/post/141953/#p141953 Theta_Frost says:

Nice work!  Excited to see where this goes.

]]> Thu, 15 Nov 2012 02:43:11 +0000 https://chipmusic.org/forums/post/141953/#p141953 <![CDATA[Re: MBC5 Clone in CPLD]]> https://chipmusic.org/forums/post/141951/#p141951 thebitman says:

This is a huge deal for the scene. I might have to PM you later...

]]> Thu, 15 Nov 2012 02:20:11 +0000 https://chipmusic.org/forums/post/141951/#p141951 <![CDATA[Re: MBC5 Clone in CPLD]]> https://chipmusic.org/forums/post/141947/#p141947 lastfuture says:

That sounds like excellent news. The Drag'n'Derp cart uses this cool ferroelectric RAM that can supposedly retain data for 10 decades without a battery. Is this something you'd see in the future of this project?

]]> Thu, 15 Nov 2012 01:58:39 +0000 https://chipmusic.org/forums/post/141947/#p141947 <![CDATA[Re: MBC5 Clone in CPLD]]> https://chipmusic.org/forums/post/141927/#p141927 xzakox says:

Ok, it's been a while... :-)
A while after my last post, I received the PCBs and tested the CPLD design, and it had some bugs that made games work badly or not work at all, and the save games were also not working, so I redid the design several times, with no luck, looking at the MBC5 as a black box is difficult, but the problem was me, I was not discovering what I was doing bad, so I got frustated and stopped for a while. I tried to make it work from time to time, but I had several other projects and started a new job, so things got stalled.
Some days ago I tried again, searching information I found some guy at the nesdev forums also trying to make the MBC5 clone and a flashcart, so we talked a bit, and I remembered that I have a working flashcart with a mbc1 clone (just the rom mapping) using standard 74xxx logic chips. So i started from that design, and today I got it to work. I tried Super Mario Bros Deluxe DX and Zelda DX and both worked perfect, with savegames and everything.
I'll update soon, I'm going to test it a bit more, but I think it is a big milestone for this humble project. I'll make the MBC5 clone opensource as promised, so keep tuned.
Now I have to fix some errors I had on the prototype PCBs, order a new batch, and test everything, but I'm really happy right now!
big_smile big_smile big_smile

For the future I'll try to make a new design using 3.3v logic, that will enable us to use modern and on stock components (it's been a pain finding 5v flash chips), but for now I'll publish what I have righ now in a few days, once I'm sure the MBC5 clone implementation  works perfect.

Expect a video soon!

]]> Wed, 14 Nov 2012 23:52:08 +0000 https://chipmusic.org/forums/post/141927/#p141927 <![CDATA[Re: MBC5 Clone in CPLD]]> https://chipmusic.org/forums/post/52519/#p52519 xzakox says:

I'm waiting for the prototype PCB's, will update soon smile

]]> Wed, 26 Jan 2011 16:36:12 +0000 https://chipmusic.org/forums/post/52519/#p52519