My replacement for Radica

andoba · Post by **andoba** » Sun Jun 24, 2007 4:58 pm

http://www.elotrolado.net/showthread.ph ... did=775473

I'm making a portable Genesis, using an ATmel 68000, NEC RAM and a chinese manufactured all in a chip ASIC.

PICS:

When the ASIC manufacturer gives me the datasheet, I will start routing everything. I hope this ends on a right spot.

Cheers.

tom61 · Post by **tom61** » Sun Jun 24, 2007 5:48 pm

Very interesting. Do you have more details on how to get the Chinese ASIC? Any plans to sell the PCB if you get it made?

Post by **gannon** » Sun Jun 24, 2007 6:05 pm

I know I (and others) have wanted to do the same with the NOAC/NES ASIC, but it's hard to find the older (and more accurate) models that are non-glob top

Post by **Skyone** » Sun Jun 24, 2007 6:24 pm

Interesting indeed, please keep us updated with the status!

Post by **CronoTriggerfan** » Sun Jun 24, 2007 10:59 pm

Yeah, I've seen some discussion about doing this for NES and even SNES, but never Genesis; keep us posted. How big will the board be?

CTFan

dman762000 · Post by **dman762000** » Sun Jun 24, 2007 11:10 pm

dude you get this figured out I wanna buy one, I keep frying radicas and I really wanna get my porta finished

andoba · Post by **andoba** » Mon Jun 25, 2007 7:40 am

It's answer time!

Do you have more details on how to get the Chinese ASIC? Any plans to sell the PCB if you get it made?

The Chinese ASIC has to be bought to a Chinese electronics retailer. No, I will not sell the PCB, I will give out the CAD files so you can build / ask for manufacture your own. I will sell complete portables, with box and everything though.

In the link I posted from the Spanish board ElOtroLado you have the CAD files, schematics and more.

I know I (and others) have wanted to do the same with the NOAC/NES ASIC, but it's hard to find the older (and more accurate) models that are non-glob top

As far I heard, those come with Tristar, and those are NOT cheap.

Interesting indeed, please keep us updated with the status!

Thank you.

Yeah, I've seen some discussion about doing this for NES and even SNES, but never Genesis; keep us posted. How big will the board be?

CTFan

Some japanese coders have implemented the SNES and NES in an FPGA (a programable ASIC). The board measures, in metrical standard, 10 cm x 6 cm (W x H), and in English standard, 4,70 in x 2,40 in, pretty small if you let me tell.

dude you get this figured out I wanna buy one, I keep frying radicas and I really wanna get my porta finished

Thank you for your interest. Yeah, Radica's suck.

By the way, this does work too with SegaCD and 32X (and VR), plus it has two pins for selecting NTSC and PAL, and JAP and ENG, depending if they are low or high (bitwise speaking).

Cheers.

Thegamer3000 · Post by **Thegamer3000** » Mon Jun 25, 2007 1:14 pm

No RGB?

andoba · Post by **andoba** » Mon Jun 25, 2007 1:19 pm

Thegamer3000 wrote:No RGB?

You see those solder points down the big ASIC, those are:

V -> composite video.
H -> chroma.
L -> luma.
R -> red.
G -> green.
BL -> blue.
GN -> video ground.

Now go figure.

Post by **marshallh** » Tue Jun 26, 2007 8:39 am

I hope this gets finished. Good luck with sourcing the ASICs, hehe

Looking good so far.

dman762000 · Post by **dman762000** » Tue Jun 26, 2007 9:55 am

when I said i wanted to buy one I didn't wanna buy just a board, I wanted to buy a complete unit, to put in a porta

werejag · Post by **werejag** » Wed Jun 27, 2007 7:40 am

andoba wrote: By the way, this does work too with SegaCD and 32X (and VR), plus it has two pins for selecting NTSC and PAL, and JAP and ENG, depending if they are low or high (bitwise speaking).

Cheers.

can you add a ide drive to this so you can read hdd or cdrs for the SegaCD and roms?

andoba · Post by **andoba** » Wed Jun 27, 2007 7:55 am

werejag wrote:
andoba wrote: By the way, this does work too with SegaCD and 32X (and VR), plus it has two pins for selecting NTSC and PAL, and JAP and ENG, depending if they are low or high (bitwise speaking).

Cheers.
can you add a ide drive to this so you can read hdd or cdrs for the SegaCD and roms?

I could do a full home console based on that, but not in a portable.

werejag · Post by **werejag** » Wed Jul 04, 2007 1:15 pm

was thinking about a laptop harddrive or laptop dvd drive

ATOMICMAN · Post by **ATOMICMAN** » Wed Jul 04, 2007 6:07 pm

werejag wrote:was thinking about a laptop harddrive or laptop dvd drive

memory card/compact flash reader then maybe