Search found 2495 matches

by Dave
Thu Sep 24, 2020 10:02 am
Forum: General QL Chat
Topic: Faster CPU plug in extensions, How?
Replies: 23
Views: 877

Re: Faster CPU plug in extensions, How?

The QL CPU sockets were absolutely terrible. While the idea is sound, those red sockets would have ruined the experience for many.
by Dave
Sat Sep 19, 2020 10:03 am
Forum: Software & Programming
Topic: QL USER type-in programs
Replies: 24
Views: 917

Re: QL USER type-in programs

GOTO?

Really? Is there anything more genuinely vintage?

We advance on vintage but in our own way.
by Dave
Fri Sep 18, 2020 1:11 am
Forum: Hardware
Topic: Target for major new QL hardware
Replies: 46
Views: 3445

Re: Target for major new QL hardware

At 2cm to the depth and 3 cm width, put the PS/2 on the back (where the dongle will be less bothersome) and move the expansion port to the left edge and duplicate it and I give you my solemn word I'll release two expansions for the Q68 II within a month. A floppy interface using the DP8473, and an ...
by Dave
Mon Sep 14, 2020 10:56 pm
Forum: Hardware
Topic: Target for major new QL hardware
Replies: 46
Views: 3445

Re: Target for major new QL hardware

The Qzero has hobbled graphics, though, which reduces the benefit. Give it full Q68 graphics and that becomes much more compelling. Via HDMI it has full Q68 graphics. I only reduced DAC width for VGA. To save space without need to handsolder 0204 resistors. Now hold on a minute. Just a second. So, ...
by Dave
Mon Sep 14, 2020 10:20 pm
Forum: General QL Chat
Topic: Faster CPU plug in extensions, How?
Replies: 23
Views: 877

Re: Faster CPU plug in extensions, How?

This is a lot more complex than it sounds. I've played a lot with replacement CPUs in the QL, with mixed success. Here's what I can tell you. Using a CPU of a different architecture is 100% doable at 7.5MHz However, I think OP is thinking about 68K processors. Nope :lol: It was an interesting read ...
by Dave
Mon Sep 14, 2020 10:06 pm
Forum: Hardware
Topic: Target for major new QL hardware
Replies: 46
Views: 3445

Re: Target for major new QL hardware

A slightly larger FPGA - to enable a separate bus for video memory so large screen sizes do not slow the entire machine Already routed and tested as part of the Qzero. Whether slightly larger or several 100% larger just a matter of target price. [/quote] The Qzero has hobbled graphics, though, whic...
by Dave
Mon Sep 14, 2020 7:22 pm
Forum: Hardware
Topic: Target for major new QL hardware
Replies: 46
Views: 3445

Re: Target for major new QL hardware

I think everything 'major' has been done. Every 68K from '000 to '060 has been used. Extended video exists. The Q68 is present and correct - it just needs to come down in price. So for me the next step is a Q68 II. Simple (I can here Peter laughing from here!) changes like: A slightly larger FPGA - ...
by Dave
Mon Sep 14, 2020 7:04 pm
Forum: General QL Chat
Topic: Faster CPU plug in extensions, How?
Replies: 23
Views: 877

Re: Faster CPU plug in extensions, How?

This is a lot more complex than it sounds. I've played a lot with replacement CPUs in the QL, with mixed success. Here's what I can tell you. Using a CPU of a different architecture is 100% doable at 7.5MHz, if you're into the idea of writing your own OS that uses all the QL's pre-defined IO address...
by Dave
Sun Sep 06, 2020 2:10 am
Forum: Hardware
Topic: Open source Floppy controller and Eprom programmer
Replies: 9
Views: 963

Re: Open source Floppy controller and Eprom programmer

Can you publish all the Sandy hardware designs under the appropriate licence. Doing this will make all the hard work that Sandy did, not be lost. I only bought certain rights. The Futura design, the QXT-640 and anything licensed from SPEM are not covered. Nor is any standalone software, including a...
by Dave
Sat Sep 05, 2020 10:13 pm
Forum: Hardware
Topic: Open source Floppy controller and Eprom programmer
Replies: 9
Views: 963

Re: Open source Floppy controller and Eprom programmer

I hereby give permission, in perpetuity, for the SuperQBoard schematics and layout to be released under the GPL V2 and/or V3 license. I obtained the rights to the hardware, but not whole driver, in 2004, from Tony Ianiri. Those parts of the driver code I did have rights to were not produced by Sandy...