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Old 24 February 2009, 00:51   #41
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Quote:
Originally Posted by BoingBall View Post
I also helped porting FPGA64 (C64)
It shouldn't have taken long, it was a nice well presented open source project (Unlike Amstrad which is written entirely in AHDL) and the MiniMig I/O wrappers are reasonably well written and documented. Getting stuff on the screen and I/O control should have only taken a few hours (most of that reading + DCM configuring).

Loading the ROMs from SD card through the PIC to SRAM is the only hard bit. MiniMig uses a special "built in" bootloader ROM written in 68000 to move the Kickstart from the SD card using the floppy disk interface to the PIC over to SRAM before rebooting.

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Originally Posted by BoingBall View Post
We have a well working VIC20 core too. Additional some other little things like MiniPong etc.
Porting cores is very very easy once you've learned the interface wrappers (VGA, Keyboard, Sound, Joysticks).

When I first got my MiniMig board several years ago I had a go at porting C64, Amstrad, Spectrum, MSX2, Vic20 and more recently Atari ST.

The bootloader was the hard bit. It required re-writing some/all of the PIC to come up with a new way to program the FPGA and SRAM on power up. I got bored by this point and put it down.... never to pick it up again

I'd be curious to know if anyone wrote a new PIC/bootloader?

Last edited by alexh; 24 February 2009 at 01:01.
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Old 24 February 2009, 00:59   #42
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Originally Posted by Ironclaw View Post
I would maybe buy a Minimig if it had AGA support and and were a bit cheaper.


PS: This message have a subliminal message, can u spot it?
No

Most of the A500 games are WHDified (it means they work on A1200)
Most of the A500 games that are not WHDified work under WinUAE
Most of the A1200 games work on A1200
Most of the Amiga gamers own A1200
Most of the Amiga gamers without A1200 use WinUAE
Rest of tha Amiga gamers without A1200 (like me) plan spend their money on brand new A1200 from amigakit
Win UAE is free and A1200 is must have if you wanna own AMIGA

This post is stupid, I go to bed, husband is unpatient. Kiss kiss
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Old 01 October 2009, 00:43   #43
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Originally Posted by Deleauvive View Post
What is a Minimig ?
http://en.wikipedia.org/wiki/Minimig

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Old 01 October 2009, 00:52   #44
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I don't like too much reading wikipedia articles, I usually find better (knackier) answers / describing info elsewhere.

May be Kitty can explain what his Minimig means to him .
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Old 01 October 2009, 01:13   #45
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Minimig is a recreation of the Amiga computer in an FPGA.
It currently runs an Amiga 500 core and Kickstart from 1.2 up to 3.1, unfortuantly its not AGA but that could be possible with upgrades added at a later date.
Minimig requires a Valid Kickstart Image to boot a mini menu on screen in which you load adf's from SD Card much like you do WinUAE.
When Minimig was first released to the public, it played a good amount of Amiga 500 games, obviously there were some floors in some games (graphics glitches etc, much like the early releases of WinUAE had, but like WinUAE it has progressed over time and firmware updates have made it into pretty much a perfect recreation of an Amiga 500 running pretty much now any Amiga adf game/demo/app. Kickstart Image and ADF files and Firmware are all stored on the SD Card, and the Minimig now supports cards up to 4GB.
A few Arm Controller Boards have been made and released to preorder customers. This addon allows the Minimig 4 floppy drives, hdf support, safe overclocking, multikickstart support and many other interesting extras

Minimig is no bigger in size than a cd case, also please remember that Minimig isnt emulation running on a chip, its not an emulator, everything has been made from scratch without using obviously any Amiga patents to make it a legal open source project.
Minimig supports 2 x Amiga joysticks, pc speaker port for sound, a regualr ps2 keyboard & mouse.
Video output is VGA but you can buy a VGA to Scart adaptor from Amigakit.

Explained simply, its awesome!

Minimig Links
http://www.minimig.net/
http://home.hetnet.nl/~weeren001/

[ Show youtube player ]
[ Show youtube player ]
[ Show youtube player ]
[ Show youtube player ]

Last edited by Kitty; 31 October 2009 at 00:54.
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Old 01 October 2009, 01:22   #46
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I see. The name reminds me of Mini-me character from The Spy who Shag me.

Yours can run WHDfyed games and demos from the SD, I guess ?
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Old 01 October 2009, 01:32   #47
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Mini (Small) Mig, Miggy, Amiga = Minimig

Apparantly you can run WHDLoad Demo's from it (I've yet to try this, waiting to buy the WHDLoad Key) also theres an option now to upgrade the memory from 2meg to 4meg (at a price of course!)


Last edited by Kitty; 01 October 2009 at 01:38.
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Old 01 October 2009, 01:49   #48
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Quote:
Originally Posted by Kitty View Post
Apparantly you can run WHDLoad Demo's from it
Not without an ARM board to replace the PIC you cannot because there is no HDD support without one. The ARM boards sell for roughly 4x the price of a second hand A600

Quote:
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I've yet to try this, waiting to buy the WHDLoad Key) also theres an option now to upgrade the memory from 2meg to 4meg (at a price of course!)
At roughly 3x the price of a second hand A600! (And don't forget some of that RAM is used for the Kickstart 0.5meg or 0.25meg)

If you include the purchase price of the MiniMig then add the ARM board & the RAM you could probably have bought an A1200 + RAM card + Indivision A1200 scandoubler.

Oh, and quite a few demos and games on MiniMig have corruption due to incorrect FPGA code.

MiniMig will be great once the price of general purpose media FPGA boards come down. It's legacy is that it is open-source and re-usable.

Last edited by alexh; 01 October 2009 at 01:55.
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Old 01 October 2009, 01:55   #49
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Which one is your setup, first pic or second pic ? The translucent box is nice, I don't like too much the idea of having computer parts sitting on the desk without anything to protect 'em.

Cute device anyway. Why some people from this thread say it's an emulator ?
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Old 01 October 2009, 01:57   #50
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Originally Posted by Deleauvive View Post
Why some people from this thread say it's an emulator ?
It is not really an emulator, it is a re-creation of the Amiga hardware. But as the original hardware designs are either lost or locked away somewhere, and there is no full documentation of the original hardware at the gate-level, MiniMig is a re-interpretation rather than re-creation. As such it is not 100% accurate, just like most emulators.
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Old 01 October 2009, 02:01   #51
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Well, the FPGA 'emulates' Denise, Agnus, Paula and Gary. That's why it's called a 'hardware emulator' I guess.
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Old 01 October 2009, 02:03   #52
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That's why it's called a 'hardware emulator' I guess.
Technically speaking it is not a hardware emulator. They are altogether different beasties.
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Old 01 October 2009, 02:04   #53
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At roughly 3x the price of a second hand A600!
Thats not true I have pre-ordered an Arm Controller for 55 euros, how much is your idea of an Amiga 600???

Quote:
(And don't forget some of that RAM is used for the Kickstart 0.5meg or 0.25meg)
4meg ram upgrade will help a lot

Quote:
Oh, and quite a few demos and games on MiniMig have corruption due to incorrect FPGA code.
New firmware has recently been released and fixed many problems, more firmware releases will only make the minimig better.
Remember Minimig is not competition for the Amiga 500, its an addition to the Amiga Community as a new Amiga sytem/enviroment, gadget, toy or whatever you wish to call it! For me its an Amiga 500 replacement, as my Amiga 500 is yellowed, dead and RIP in the loft.
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Old 01 October 2009, 02:08   #54
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Quote:
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The ARM boards sell for roughly 4x the price of a second hand A600
Thats not true I have pre-ordered an Arm Controller for 55 euros, how much is your idea of an Amiga 600???
I bought mine for about 18 euro. I've seen them sell for less.

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New firmware has recently been released and fixed many problems, more firmware releases will only make the minimig better.
I have the latest firmware, still has issues. And it only has two active developers, one of which has splintered off from the main branch. Because it is open source it has the potential to get better, but all it would take is for Jakub to get bored for it to fester for years in it's current state.

What MiniMig needs is a large company to mass produce FPGA based game consoles (perhaps for some other purpose) which can be re-used for MiniMig. To lower the cost of the hardware. If that happens it could have a great future.
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Old 01 October 2009, 02:15   #55
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Technically speaking it is not a hardware emulator. They are altogether different beasties.
Hence the quotes
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Old 01 October 2009, 02:18   #56
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Hence the quotes
Damn, these single quotes, I keep missing them
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Old 01 October 2009, 02:25   #57
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Yeah I agree it needs to be mass produced and the worlds our oyster, Classic Amiga bought of the shelf again in 2010? We can Dream
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Old 01 October 2009, 02:31   #58
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Actualy, despite the low key, it can be bought in kit form meaning that people who know how to program with FPGA correctly could improve the core without the help of the originally developers. There are other Minimig owners who have already made there own firmware with improvments.
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Old 01 October 2009, 02:43   #59
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At least we have new hardware (improvements) for classic Amigas. Far better than this hardware/emulator hybrid imho.
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Old 01 October 2009, 03:34   #60
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also please remember that Minimig isnt emulation running on a chip, its not an emulator, everything has been made from scratch without using obviously any Amiga patents to make it a legal open source project.
Quote:
Technically speaking it is not a hardware emulator. They are altogether different beasties.
Made from scratch hardware and software, its a step forward in new Classic Amiga technology.
-------------------------------------------------------------------------------------------
Amiga 500, Amiga 1000, 1500, 2000, 3000, 4000, 4000T are all classic Amiga in my eyes, for me though Amiga 500 1.3 is my favorite (my opinion anyway)

Last edited by Kitty; 01 October 2009 at 03:47.
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