Mini-Mig Bill of Materials

[little]

The board could be argued to be a plain FPGA developer board.

We sure talk a lot, but I have yet to see a real development community, maybe when everybody with verilog skills has a minimig they can open a closed message board to discuss any improvements and share code.

The only other thing that comes near being Amiga specific is the m68k and joystick ports.

near? I would say "far". The m68k was used on the atari st, the apple classic macintosh, the sharp x68000, the sega genesis and all of the above except the apple macintosh used the same de-9 joystick ports.

[AJCopland]

little wrote:

The only other thing that comes near being Amiga specific is the m68k and joystick ports.

near? I would say "far". The m68k was used on the atari st, the apple classic macintosh, the sharp x68000, the sega genesis and all of the above except the apple macintosh used the same de-9 joystick ports.

Sega Genesis/Megadrive, totally forgot about that! Those things would be perfect for this and there's a metric tonne of emulators based around it out there. Brilliant! Change the files on the MMC and you've got another computer entirely.

Andy

[billt]

Also how about a FPGA socket for the Xilinx? Sockets for the other chips would be a good idea too...

That sort of socket is probably very expensive.

[billt]

The SMD caps and resistors should be in the 0805 package.

Any reason to care if resistors are thick or thin film?

[Crom00]

Dennis wrote:
I have uploaded the original BOM to the download section on my site.
Dennis

THANKS a million!

[little]

That sort of socket is probably very expensive.

If a socket is to be included wouldn't it be better to use them for the RAM chips? So if someone later on want's to upgrade the RAM on their system it would be just a matter of changing the chips. I remember once adding two chips to the sockets my cirrus logic video PCI board. two MB is ok for basic emulation, to run some applications on the amiga eight mb would be better and for emulating other hardware up to 128mb would be required. Am I dreaming to much? :lol:

[Colin_Camper]

Dennis wrote:

Also, I have added a second page with some clarifications to the BOM here.

Dennis

Woah - at first I just saw the 1st page and I was gutted! The only new info was the 1% resistor tolerance.

But then I saw the 2nd page!  :-D

Thanks, Dennis!  :-)

[jahc]

Questions..

1. Do you provide a case for the board?

2. Will you specify the volts and amps required for the external DC power supply, so that us guys overseas can just wander into any old electronics store and buy an appropriate one?

3. Are you going to email us guys with prices and availability information when it comes to hand?

Thank you.

[Plaz]

1. Do you provide a case for the board?

I may be building the best minimig case ever. Mine is going to look something like this....

Plaz's minimig case.

Mine looks a bit different, but you get the idea. I started building it about a month ago and I'm a little under half done. I plan to add mininig to the beast for awesome amiga-retro game play :-).

Pictures will be forthcoming as construction progesses.

Plaz

[Vlabguy1]

Im def. looking fwd to getting a few boards and a list of parts..so I can built mine :-)


Thanks
Rich
ny
Long Live Amiga

Crom00 wrote:

tonyyeb wrote:
Is this what you need?

http://www.opencircuits.com/Minimig_Board_v1.0_components

Thank you brother! I just sent this to the factories, they will advise if it's good enough for costing. After that I'll assemble a complete BOM with all packaging, instruction sheet spces and pack in materials.

[Crom00]

Answers:
1) No Case tooling for a case is high... thousands to tens of thousands dollars just for the steel molds alone. Lots of design and debugging and it will add a few months to development time. We want to keep costs low. This is a specialty kit for hobbyists, a DIY type thing.

2) Aiming to devlier it witha US power supply and a 220 adapter for UK, no promises though.

3) If  you're inrtested PM me. When or if the time comes we will notify you.

You're welcome

[whiteb]

Dennis wrote:
I have uploaded the original BOM to the download section on my site. You can download it here.
Also, I have added a second page with some clarifications to the BOM here.

Dennis

Dennis, In addition to the Farnell part number for the Max232/SO16, Digikey 296-6936-5-ND

[Dennis]

Dennis, In addition to the Farnell part number for the Max232/SO16, Digikey 296-6936-5-ND

That part is not suitable for the Minimig. It is a 5V only part. You'll need a MAX232 (or clone) that is specified to operate at 3.3V with 0.1uF caps.

Dennis

[whiteb]

Flap, all Digikey's are 5 Volt.

[nBit7]

That part is not suitable for the Minimig. It is a 5V only part. You'll need a MAX232 (or clone) that is specified to operate at 3.3V with 0.1uF caps.

To the best of my knowledge the MAX232 (from MAXIM) is a 5V only part.
http://para.maxim-ic.com/cache/en/results/5021.html

The MAX3232 is the 3.3 - 5V part.  Checking the datasheet for the MAX3232 against your schematics the pinout matches.

[CrazyProg]

For the power supply can't you get a 'univeral' power brick as is used by laptops and mini-itx computers.  Then an adaptor wouldn't be need, just use the appropiate cable for the country your in.

Regards Neil.