Their custom OS sounds interesting...
Ah, I knew there was something I forgot to rant about :-)

From their current FAQ http://www.commodoreusa.net/CUSA_FAQ.aspx :
10. What is Commodore OS?
Our new Commodore operating system, will be a unique Commodore and AMIGA centric Linux distribution, that ...

I saw that as well Garth. With a dual-core Intel cpu. The all in one package is sorta cool, where you just need to plug into a video device, but so many details left out. Is it a Nehalem Intel cpu where they don't need the north bridge? Where are the spec's?

They could use it as a tool to teach ...

http://cgi.ebay.co.uk/ARM-DSO-Nano-Pocket-Sized-Digital-Oscilloscope-New-/280629466420?pt=UK_BOI_Electrical_Test_Measurement_Equipment_ET&hash=item4156d1d534#ht_2933wt_824

Probably a waste of money but I thought I'd ask..
I'd say this is a cheap toy. Max sample rate of 1MS roughly translates to ...

Am looking at a Tektronics 2213 - should be OK I think, but it is only 60Mhz..
Yes, this should be OK too.

These old analog Teks perform a lot better than most of the new, cheap digital scopes. Digital scopes might be nice to analyze aperiodic and/or single-shot events, but when doing ...

By the way, what sort of scope would I need? I'm scanning ebay looking for a cheap model - what specifications should it have?
I'd say 2-channel 100MHz (or faster).

I have an old Tektronix 465B here and I'm very happy with it. Well, a 2465 would be great, but they cost a lot more... A Tek 475 ...

Created the debounce symbol and connected it to the inverter before RES (Reset) and RES2 (NMI) in the schematic, using O2/2 as the clk for the debounce symbols. Now nothing works.
Actually, the logic works as a rising-edge-detector: whenever the the input is low @t-3, high @t-2 and @t-1 the output ...

process (<clk>)
begin
if (<clk>'event and <clk> = '1') then
Q1 <= sig_in;
Q2 <= Q1;
Q3 <= Q2;
end if;
end process;


ERROR:HDLParsers:164 - "C:/a/debounce.vhd" Line 35. parse error, unexpected LT, expecting IDENTIFIER or STRING_LITERAL
ERROR:HDLParsers:164 - "C:/a/debounce.vhd" Line 41 ...

Arlet, I think he was describing a custom interface like discussed url], except Hias was interfacing directly from an atari800 to a Lattice CPLD via his custom JTAG.
My current setup is a homebrew Lattice cable (with a '244 line driver) connected to the parallel port of my Linux box. I use UrJTAG ...

I was re-reading your original post where you said you used Xilinx XC95xxx XL series, which are the 3.3V devices. But it sounded like you were interfacing to 5V TTL?

If this is true, why did you not use a regular XC95xxx, which are 5V devices?
There were 2 reasons: availability and price.

I ...

Here's my old source code:
http://www.horus.com/~hias/tmp/ispvm-050910.zip

I hope this was the last, working, version, not 100% sure and ATM I cannot verify it. But at least it compiles with the current cc65 without warnings :-)

It seems I have played with various delay functions, the functions ...

Hi Ed!

Hias,
An excellent plan! Never mind the lack of parallel printer ports on modern PCs - anyone in possession of a 6520 or 6522 is only ... well, it probably takes quite some expertise, but is only a matter of software! Personally I use an old laptop running TinyCore linux from RAM, with ...

SHHHH! A simple JTAG cable? what is that?!
I'll tell you a secret if you promise me not to tell anyone else :-)))

The simplest JTAG interface I built so far was just 4 wires connected to the 6520 PIA of my Atari 800XL. Compiling ispVMSystem Embedded using cc65 was easier than I thought and ...

I have not used any FLASH memories or EEPROM's larger than 32Kx8, so I really can't help too much with those.
But I did (128kx8 and 512kx8), and it is not too complicated.

I'm currently working on a kind of generic flasher-library (I called it "libflash") for the Atari 8bits. So far it works with ...

3) Developer tools require Windows to really work right. Some claims of success running software in Linux can be found here and there on the 'net, but seemingly without fail, when things go wrong (and they do), the support forums I've read all indicate, "You should use Windows."
At least for the ...

I didn't want to hijack the "Wait-States with a GAL" thread, so I thought it's better to start a new one:

However, the XC95xxx XL series are 3.3V powered devices. One can read about all the tolerances and 5V I/O compatibility in the App Notes for the XL series.
What is problematic with the XL ...