Search found 1362 matches

by Peter
Fri Nov 26, 2021 5:42 pm
Forum: Hardware
Topic: Re QL SD ROM Update Please
Replies: 10
Views: 416

Re: Re QL SD ROM Update Please

Maskenlos wrote:Current price for 842-LC4064V75TN48C is around 35USD per single piece instead of 3.50

You can still order the LC4064V75TN48C for 3.09 € if you accept 39 weeks of waiting.
Also faster speed grade chips for 5,58 € are available around April 2022.
by Peter
Sun Nov 14, 2021 8:04 pm
Forum: Software & Programming
Topic: GNU GDB
Replies: 9
Views: 577

Re: GNU GDB

For Q40/60 I had used GDB source level debugging via SER, using a "remote stub". Which is a few special-purpose subroutines that implement the GDB remote serial protocol and are linked to the executable. That was remote debugging (from a PC) and the executable was "bare metal" GC...
by Peter
Wed Nov 10, 2021 9:55 pm
Forum: The Off-Topic Section
Topic: My ZX81's stopped working. :-(
Replies: 35
Views: 3676

Re: My ZX81's stopped working. :-(

But speaking of it, for some unexplained reason the classic license apparently now costs 600 USD per year, so that also rules out these chips for new designs. Same happened to Lattice ispLSI devices. But back then I could at least get a permanent license, and it was not so expensive. The LFE5U is s...
by Peter
Fri Nov 05, 2021 8:58 pm
Forum: The Off-Topic Section
Topic: My ZX81's stopped working. :-(
Replies: 35
Views: 3676

Re: My ZX81's stopped working. :-(

If I had the choice I would always choose Intel, the Quartus software is way ahead of everything else I've seen, especially when it comes to debugging. I agree that Quartus is the most user friendly, I worked with it for a decade or so. Similar to Lattice where I only know ispLever and not Diamond....
by Peter
Fri Nov 05, 2021 1:09 pm
Forum: The Off-Topic Section
Topic: My ZX81's stopped working. :-(
Replies: 35
Views: 3676

Re: My ZX81's stopped working. :-(

Okay that's a very individual procurement situation. I was just wondering if I had overlooked a nice technical feature of the Xilinx chip - it just seemed 60% more expensive to me. I agree that the Lattice tools are inferior to those of Intel and Xilinx. Lattice as a small PLD/FPGA vendor can compet...
by Peter
Fri Nov 05, 2021 12:52 pm
Forum: Software & Programming
Topic: Q68 QoE Ethernet Driver
Replies: 82
Views: 11303

Re: Q68 QoE Ethernet Driver

My main intention was to cherish the enormous amount of work and your outstanding achievement, creating such a comprehensive QL native driver in assembly language. I think the combined complexity of TCP/IP and ethernet is higher than any driver that Tony Tebby ever wrote. Hopefully your work will be...
by Peter
Thu Nov 04, 2021 12:21 am
Forum: The Off-Topic Section
Topic: My ZX81's stopped working. :-(
Replies: 35
Views: 3676

Re: My ZX81's stopped working. :-(

mk79 wrote:Well, the 5V compatibility drove me to the XC95144, but maybe it would have been better to just use lever shifters and a newer chip, no idea.

What made you move from the ispMACH 4000 family to XC9500?
by Peter
Wed Nov 03, 2021 11:46 pm
Forum: QL Emulation
Topic: sQLux Foibles
Replies: 50
Views: 6607

Re: sQLux Foibles

Nice! Thank you :)
by Peter
Wed Nov 03, 2021 11:44 pm
Forum: The Off-Topic Section
Topic: Today I Received...
Replies: 475
Views: 77581

Re: Today I Received...

mk79 wrote:
Peter wrote:Look at the PCB designs... real artworks that are impossible with modern CAD. ;)
Indeed. But do you know TopoR? I guess it could produce at least similar boards https://en.wikipedia.org/wiki/TopoR :-)

Haha, cool. I did not know it, thank you for the interesting link. :o
by Peter
Wed Nov 03, 2021 11:31 pm
Forum: Software & Programming
Topic: Q68 QoE Ethernet Driver
Replies: 82
Views: 11303

Re: Q68 QoE Ethernet Driver

Thank you Martin!
600 KB of sourcecode in one assembler file... wow...