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Author Topic: New Minimig cores available  (Read 20825 times)

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Offline Darrin

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Re: New Minimig cores available
« Reply #14 on: September 05, 2008, 07:46:21 PM »
Poster: Everblue  Posted: 2008/9/5 12:01:17

I am thining of buying a minimig... and I have some questions:

3. If I buy a minimig now, will I have to update the pic myself (with the serial cable and or that) or it will come pre-installed.[/quote]

Contact AmigaKit - I believe they are reflashing the PIC with the new hex file before shipping.
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Offline Darrin

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Re: New Minimig cores available
« Reply #15 on: September 05, 2008, 08:11:37 PM »
@ Yacube,

Any chance of a 60Hz hacked PAL core option?  I know there we're problems with 1 or 2 programs, but it was stable on the whole.
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Offline Darrin

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Re: New Minimig cores available
« Reply #16 on: September 05, 2008, 08:48:20 PM »
NTSC core will work.

When it doubt, go to the manufacturer's website and check the specs.
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Offline Darrin

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Re: New Minimig cores available
« Reply #17 on: September 05, 2008, 09:10:47 PM »
Just had a request for a location to download Tiny Bootloader.  Here's a link

http://www.etc.ugal.ro/cchiculita/software/picbootloader.htm
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Offline Darrin

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Re: New Minimig cores available
« Reply #18 on: September 05, 2008, 10:15:19 PM »
Quote
Poster: Everblue  Posted: 2008/9/5 15:11:27

But if I ply PAL games in NTSC mode, wont that mean that the games will run faster than they should?


True, there is a slight speedup.  I'm from the UK (PAL) and I moved to the USA (NTSC), but most of my own software was bought in Europe (PAL).  What is surprising, is how much of that PAL software is actually NTSC screen size because it was written for both markets.  Some games even have a PAL/NTSC screen size toggle built in.

I tested a lot of these games using a PAL core, NTSC core and a "hybrid".  Off the top of my head, the only game I actually recall that needed to be run in PAL to avoid clipping was Rodland.

Personally, I keep my real big box Amigas in PAL mode as I like to have the "larger" PAL native workbench displays.  It's not such a concern with the Minimig.

Anyway, it seems that you'll be fine using your monitor with the PAL core.  People need to make note of your monitor, it's a good one!  :-D
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Offline Darrin

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Re: New Minimig cores available
« Reply #19 on: September 06, 2008, 04:04:51 PM »
Quote
Poster: Hattig  Posted: 2008/9/6 8:51:01

I presume it will work on my TV (it has VGA in).


Yes, but whether it will work with the PAL & NTSC cores or just the NTSC core is down to your TV.

Quote
What's on the list of existing problems to solve now? Hard file support? 14MHz 68k option (Gunship 2000 and other 3D games would run smoother)? Remaining bugs, if any?


A few games still have some bugs.  Menace is one where the ship's shield constantly run down which might be due to bad collision detection with teh background graphics.  The vast majority now seem to be running perfectly (as per my list).  Remember, some of the games on that list are still showing as "broken" simply because they haven't been retested using the new core/PIC update.

Quote
Any images of the "interpolation" feature? Won't this blur sharp parts of the image, or is it done in a non-trivial manner, or like some of the more advanced smoothing functions in software emulators?


Personally, I've never noticed anothing because I'm too busy trying to stay alive to examine the screen in any great detail.  :-D
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Offline Darrin

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Re: New Minimig cores available
« Reply #20 on: September 06, 2008, 07:21:52 PM »
Quote
Poster: Norway  Posted: 2008/9/6 12:55:49

is there another way to update the pic, then via o modem? i only have usb on my pc laptop


FOUR ways:

#1:  Buy a replacement PIC with the update flashed on it.

#2:  Send your PIC to some kind soul who will flash it for you (the chip pops off easily).

#3:  Put Tiny Bootloader and the hex file onto a memory stick, take your Minimig, cable and stick to your friends house and ask him if you can use his PC for 5 minutes.

#4:  Buy a cheap USB to Serial port adapter (link below).

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1104139&CatId=447

I hope that helps.  :-)
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Offline Darrin

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Re: New Minimig cores available
« Reply #21 on: September 06, 2008, 07:24:12 PM »
Quote
Poster: boing4000
I just tried to compile the FPGA Core in ISE 9.2i (found it for download).
The core was compiled 100% without error (only a few warnings) but Minimig only show a black screen after loading the core.
Do you have any idea what it could be?


Using a 50Hz core on a monitor that will only display 60Hz+?  ;-)
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Offline Darrin

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Re: New Minimig cores available
« Reply #22 on: September 08, 2008, 04:49:23 PM »
@ Yaqube:

Ohhh!  Is that what I think it is?  :-D

The Daddy will be pleased as he has 2.5cm of clearance above the top of his PIC socket in his custom case and that "looks" like it should just squeeze in!
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Re: New Minimig cores available
« Reply #23 on: September 08, 2008, 06:15:58 PM »
@ Yaqube:

Excellent.  It looks great.  Removing chips and jamming whole boards in their place makes the Minimig look even more like a real Amiga!  :-D

Can you clarify the purpose of the USB port before someone posts a rumour that you've developed a USB2.0 card for the Minimig for use with Workbench 1.3 and running off a single floppy image!  ;-)  I assume it's just for upgrading the firmware, or can it be used to treat a memory stick like the SD card?
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Offline Darrin

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Re: New Minimig cores available
« Reply #24 on: September 08, 2008, 06:19:14 PM »
Quote
Poster: boing4000  Posted: 2008/9/8 11:50:57

I asked Dennis some time ago about clocking the 68000 at 28MHz, he told me it could work if the 68k-bridge module is adapted to it.
But 14MHz was definitely working in Dennis 2nd released firmware. You can find out in Minimig1.v by searching for "turbo cpu".
Dennis made it like that (out of memory)


Does that mean we could have a core where we could set one of the custom jumpers to select either a 7MHz or 14MHz 68000?  Handy for Wing Commander which limps along at the moment.
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Re: New Minimig cores available
« Reply #25 on: September 08, 2008, 07:07:36 PM »
Quote
Poster: boing4000  Posted: 2008/9/8 12:19:29

@Darrin

The last older core from me (also NTSC version) had 7/14MHz and Slowmem selectable via jumper on Spare-i/o. Most of this is now in Jakub's new core (selectable ram). I made only 14mhz available to my one now in current version.


That great.  Where have you been posting your cores, or are these just pre-release projects?
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Offline Darrin

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Re: New Minimig cores available
« Reply #26 on: September 08, 2008, 07:13:28 PM »
Quote
Poster: yaqube  Posted: 2008/9/8 12:46:09

Initially the USB port will be used for firmware upgrades. Maybe later it will be used for accessing the SD card from a PC (will act as a flash card reader - solution similar to the PSP's one).

This is only USB full speed (1.1) device port so you can only connect it to a PC.


Thanks for the info.  Good luck with the project.

Quote
More info will be available when it is done.


Why does that phrase always send a shiver down my spine!   :lol:
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Offline Darrin

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Re: New Minimig cores available
« Reply #27 on: September 08, 2008, 09:45:28 PM »
@Boing4000

I must have missed that.

I'll keep an eye out for any other releases you make.  A switchable "turbo" mode would be very welcome for games like "X-COM:  UFO Enemy Unknown"
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Offline Darrin

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Re: New Minimig cores available
« Reply #28 on: September 08, 2008, 10:24:49 PM »
Quote
Poster: TheDaddy  Posted: 2008/9/8 13:06:08

@yaq

Email me when ready, so I can change the CAD for the enclosure (and send me the board, or one of them).


Perhaps you could trade him an enclosure for a board.   :lol:
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Re: New Minimig cores available
« Reply #29 from previous page: September 09, 2008, 12:15:53 AM »
@ Boing4000:

Drool!!!  When you do, remember to post a link to it on here in bloody big letters so I can't miss it.   :-D
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