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Post by youki on Apr 10, 2008 6:24:20 GMT -5
Hello,
This is my first post on that forum I just discovered.
I bought recently a MMC2IEC from NKC . It works very well , but it use Lar's Firmware 0.8 .
I heard about a new Firmware (from unseen , i think) , that , if i understood well, allow to read use .D64 as it is a real floppy. Or at least, there is utilities that allow to copy the .D64 from the MMC2IEC to a real floppy on the 1541.
I have already found this firmware for NKC version on the net.
My questions are :
- Are .D64 becomes really readable? - How can we update the firmware? Do we need special hardware?
Thanks
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Post by Jim Brain on Apr 10, 2008 13:34:50 GMT -5
D64s are readble and writeable. Very cool.
Jim
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Post by retrobits on Apr 10, 2008 20:27:49 GMT -5
Wow, this is REALLY exciting! I've been hoping for an affordable flash storage device that would support D64 images in R/W. On a 1 GB SD card, you could have an unimaginable amount of software. The only regret I have about every solution I've seen is that nothing emulates a 1571 in burst mode. Oh well. Thanks for the heads-up on this (although it will damage my piggy-bank). :-) - Earl
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Post by youki on Apr 11, 2008 8:07:26 GMT -5
D64s are readble and writeable. Very cool. Jim thanks. But do you know how to update the Firmware ?
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Post by huckle on Apr 11, 2008 16:46:36 GMT -5
You need an AVR programmer to update the NKC via the 6 pin ISP connector on the board. Something like the AVRISP2 with AVR Studio is simple and easy to use . Personally I used the USBtinyISP programmer with AVRDUDE to update mine. You won't need to change any of the fuse settings unless you're adding a crystal to your board as well. (don't mess with any of the fuse settings at all!)
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Post by youki on Apr 13, 2008 4:00:38 GMT -5
You need an AVR programmer to update the NKC via the 6 pin ISP connector on the board. Thanks for your anwser. you mean the I CSP connector? Once we have upgraded the firmware , in case of problem, is it still possible to downgrade with the lar's one? I'm going to look for a AVR programmer. Thanks for your help.
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Post by Jim Brain on Apr 14, 2008 11:10:47 GMT -5
"ISP" is the preferred term, for In-circuit Serial Programming. I agree your acronym is more complete, but is rarely used.
You can downgrade the firmware with the ISP programmer. In fact, you can load something entirely different with the ISP, though I doubt you want to.
Jim
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Post by Jim Brain on Apr 14, 2008 11:11:34 GMT -5
The only regret I have about every solution I've seen is that nothing emulates a 1571 in burst mode. Oh well. Well, sd2iec supports JDOS, so you cna get your fast access that way. jim
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Post by Jim Brain on Apr 14, 2008 11:13:42 GMT -5
Accessing D64s is trivial:
You simply 'cd' into a D64. So, if the D64 is in the root dir, just
open15,x,15,"cd:d64name.d64":close15
and then do a directory. It will look exactly like a 1541 dir.
Jim
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Post by youki on Apr 15, 2008 6:37:18 GMT -5
Thanks a lot for your help , i'm going to find a AVR Programmer and try.
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Post by racob on Apr 15, 2008 8:49:39 GMT -5
Youki wrote: If you are into building projects (electronics), I built mine based from a parallel connector and Ponyprog's ISP programmer. I also used PonyProg as the software part of it as well. I also encountered a lot of learning about AVR fuses, etc... I must warn you that if you want to do a lot of AVR programming and experimenting, maybe you are better off in buying the finished ISP product in the long run (as most new PC's don't have parallel connectors anymore). Thought I throw my 2 cents......
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