Mini-Mig Bill of Materials

[freqmax]

@Crom00:
Some things you may want to consider:

* The original Async-SRAM chip is not available. And I don't see any reason to use two, when all the required ram will fit in one chip.

* Capacitor & Resistor package sizes are not detailed anywhere. My educated guess is that they are 0805 however.
(using recommended 0805 & 0605 solder pads and compare with pcb layout)

* Try to use RoHS components and solder to avoid legal problems with customs or enviromental authorities. In essense it's forbidden to sell any consumer non-RoHS complient device. Unless you can accomplish some exception, like telecoms equipment. Violations to this law may incour hefty fines.
Anyone using lead solder at home for repair or private purposes will have no problem.

[whiteb]

Hans_ wrote:

whiteb wrote:
Oh who cares about lead free, unless you are going to lick the Minimig to death.

You know, I can almost picture some people here doing that.  :laughing:

Hans

Hahahaha yeah, we Amiga freaks do get a bit possessive of our Girlfriends

[Eclipse]

Hi
If built in China RoHS won't be a problem per se. They don't adhere to it yet.
I'm guessing 0805 as well for the size as it's fairly standard.
Why you trying to get the exact 68000? There are very cheap alternatives to this now. They are 32 bit but can be programmed to 8/16.
Freescale

[Eclipse]

My bad for not reading, freescale posted above and not 20 year old CPU's. Sorry in advance.

[jkonstan]

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

[hardlink]

whiteb wrote:
Oh who cares about lead free, unless you are going to lick the Minimig to death.

Speak for yourself (slurp)

[whiteb]

Eclipse wrote:
Hi
If built in China RoHS won't be a problem per se. They don't adhere to it yet.
I'm guessing 0805 as well for the size as it's fairly standard.
Why you trying to get the exact 68000? There are very cheap alternatives to this now. They are 32 bit but can be programmed to 8/16.
Freescale

LOLZ, China is not exactly adhering to reducing Lead in paint for children's toys, why should Solder be any different. (And for the Record, I do not believe Matel's {bleep} retracting statement).

[Crom00]

Well sent off the propsed PCB BOM data, thanks to all those that replied to this thread. Please PM or Post any more data here.

[Dennis]

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

[Eclipse]

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

That BOM is better as the first one posted does not state Cap and Res values.
RS components allow web accounts, Maplins and of course Ebay will have some of these.

[freqmax]

Just thinking about liability issues, as the flashmemory is the one containing the FPGA bitfile, ROM files and possible other higher level software. The only component containting anything really substantial is the MCU. And that is also programmed.
So if the board comes unprogrammed there's nothing to build a case around hardware wise. Forum posts could be used however as evidence on intent.
The board could be argued to be a plain FPGA developer board.

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

Something else..
Are people still intent on using two SRAM chips?
Also noticed this SD flashmemory hack: http://hackszine.com/sd_20070921.jpg

[Hans_]

Eclipse wrote:
Hi
If built in China RoHS won't be a problem per se. They don't adhere to it yet.

It will still be an issue due to import restrictions. It makes no sense to force your own industry to be RoHS compliant if people can just import cheaper non-RoHS stuff from elsewhere.

Hans

[AJCopland]

Worrying about the legality of the MiniMig hardware is ... almost completely pointless.

The fact is that you could program whatever you like into the MiniMig. It's almost certainly a mere matter of time until someone has setup an Atari clone in one in fact many 68000 based machine could be replicated in it.

It was designed to do the job of providing an environment that the Amiga could be replicated in using the correct software.
Now the software might theoretically be somehow tainted enough that someone might be able to bring a case that got to court... maybe. The hardware however... I just can't see it being possible and I'd lend whatever coding ability I have to reproducing as many 68k based paltforms in the MiniMig hardware as is humanely possible just to muddy the waters if anyone tried :-D

Andy

[Crom00]

RoHS won't be a problem.

[AJCopland]

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

Thanks Dennis that'll save me hunting around for the parts and should speed everything up

Glad to see you've still got time to see how things are slowly progressing!

Andy

[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.