teh3pwner wrote:nice design unseenmenance.
teh3pwner wrote:are you using photoshop to make these?????????
unseenmenace wrote:I'm no electronics guru but couldn't cheap I.C's be used for the likes of LAN or USB rather than adding more to the FPGA?
unseenmenace wrote:I was only sharing my thoughts of what it might look like anyway
alexh wrote:Yes. In fact you HAVE to use some sort of external IC's for USB and LAN as they require special Phy's (special analog bits) not in most FPGA. But FPGA capacity is not the problem, the problem is I/O pins. Even with external chips you have to add the extra I/O pins to control them. (Address, Data, Chip select, output enable etc. etc.) To get more I/O you have to get a bigger, better and more expensive FPGA
It has a 68K processor (same as Minimig) but this is only to let me verify the 68K soft core, it should not be necessary to fit it.
alexh wrote:Are you familiar with the recently discovered incompatibility with the 3.3v 68SEC000 CPU used on MiniMig?
The problem is that "move.w sr,EA" is privileged on 68EC000 and 68SEC000. This breaks any old application/game/demo using "move sr,EA" (in user mode).
I dunno how much it would affect the Atari ST (Any uber good coder know??)
Does anybody have a test suite for the 68K - perhaps for a software emulator? I am looking for some software which executes every instruction.
Gordini wrote:I think that coding up the 68k in VHDL or Verilog is a waste of (a lot of) time. You can still buy these parts easily enough. This was one of the great decisions made in the Minimig project.
The biggest problem with Minimig, as an ST, is its lack of a MIDI interface. For me, Cubase is the 'killer app' of the ST and Falcon machines.
Those things said. Why bother with an FPGA ST at all ???
Gordini wrote:What we DON'T have is a Falcon emulator,
Gordini wrote: this for me would be a very interesting prospect for FPGA implementation. My proposal would be ...
thothy wrote:Have a look at http://hatari.berlios.de/scrshots6.html and say that again!
thothy wrote:There is already the Atari Coldfire Project ( http://acp.atari.org/ ) which is also planning to us a FPGA for emulating the old hardware chips. I think they are planning to implement a 56k DSP into the FPGA, too.
Gordini wrote:This looks like some great work in progress, well done. I thought that there was a lot of development left to do, but it appears that you have come quite far. If you keep up the good work there will be no need for a FPGA Falcon either! I'd really like this project to be completed, so if I can help please let me know. I have 15 years C and 56k experience, plus a fair bit of Falcon know how...
Gordini wrote:I personally don't see the point in the Coldfire idea, it's not object code compatible. We have PCs for NEW software !
joska wrote:Gordini wrote:I personally don't see the point in the Coldfire idea, it's not object code compatible. We have PCs for NEW software !
What a depressing point of view. Not very hackerish! Personally I don't see the point in replicating the STE in FPGA. We have original hardware for OLD software. Fleamarkets and eBay is full of ST's, for €50 you can buy a 1014STFM which runs just about every old game better than a almost-perfect FPGA clone.
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