Search found 2408 matches

by Dave
Sun Jun 23, 2019 5:11 pm
Forum: Software & Programming
Topic: Announcing availability of a QLNET driver for the Q68 (ND-Q68)
Replies: 45
Views: 3591

Re: Announcing availability of a QLNET driver for the Q68 (ND-Q68)

I will be uploading a slightly modified board later. It fixes a bug where the termination resistors are wired incorrectly (the signal is wired to ground not the tip, and the termination resistor to the tip, not ground side of the switch. I discovered the switched 3.5mm jacks I bought have a differen...
by Dave
Sat Jun 22, 2019 11:05 pm
Forum: Compatibles Corner
Topic: Q68 serial buffers
Replies: 13
Views: 1455

Re: Q68 serial buffers

This might also explain a couple of pcorruptions I had at >38,600 speeds, but they don't show up often.
by Dave
Sat Jun 22, 2019 6:11 pm
Forum: Compatibles Corner
Topic: Q68 serial buffers
Replies: 13
Views: 1455

Re: Q68 serial buffers

I haven't received any meaningful mail from that list for a couple of years. Does anyone even use it any more?
by Dave
Fri Jun 21, 2019 5:57 pm
Forum: The Welcome Area
Topic: Hello from Riscman
Replies: 3
Views: 491

Re: Hello from Riscman

Not fake. I've seen the printouts and they are reasonable.
by Dave
Fri Jun 21, 2019 5:21 pm
Forum: Software & Programming
Topic: Hardware pointers and cursors.
Replies: 30
Views: 2668

Hardware pointers and cursors.

One of the huge inefficiencies of WIMP systems on the QL is the manually drawn and redrawn pointers (and cursors generally). I've been playing with a system that enabled hardware pointers. For those not in the know, this is an interesting shift of responsibility from OS to hardware. Currently, the O...
by Dave
Thu Jun 20, 2019 4:32 pm
Forum: Software & Programming
Topic: Announcing availability of a QLNET driver for the Q68 (ND-Q68)
Replies: 45
Views: 3591

Re: Announcing availability of a QLNET driver for the Q68 (ND-Q68)

You're welcome to produce your own design that meets your personal aesthetic requirements. BTW: if you DID mount the 3.5mm jacks on the left side of the case, the PCB would need to start at the extension connector and head down or right, because there isn't quite enough clearance on the left side of...
by Dave
Thu Jun 20, 2019 2:56 pm
Forum: Software & Programming
Topic: Announcing availability of a QLNET driver for the Q68 (ND-Q68)
Replies: 45
Views: 3591

Re: Announcing availability of a QLNET driver for the Q68 (ND-Q68)

Before we get lost in this, I just wanted to say... We have an exciting new feature for our Q68s. One that gives the Q68 access to floppies, microdrives and other QL expansions! Martyn Hill has adapted and written an amazing driver, and we should be focusing on the positives of that, rather than tea...
by Dave
Wed Jun 19, 2019 10:00 pm
Forum: Wanted
Topic: Wanted To Buy boxed Sinclair QL
Replies: 6
Views: 619

Re: Wanted To Buy boxed Sinclair QL

Yeah, I disassembled all my microdrives to assemble new ones, then never did. Now I have no QLs with good, working microdrives. I've bought six from the UK so far and all but one were bad. :)
by Dave
Wed Jun 19, 2019 9:31 pm
Forum: Software & Programming
Topic: Announcing availability of a QLNET driver for the Q68 (ND-Q68)
Replies: 45
Views: 3591

Re: Announcing availability of a QLNET driver for the Q68 (ND-Q68)

My current plan is to install the QL NET PCB, (the one from Dave or something I will built myself), about 10 cm away from the Q68. Is there a problem having the three lines (3.3V, Ground and NET signal) 10 cm long ? As the length of NET cable between machines can be quite long, I don't see any issu...
by Dave
Wed Jun 19, 2019 8:52 pm
Forum: Hardware
Topic: Symmetric multiprocessing...
Replies: 52
Views: 4594

Re: Symmetric multiprocessing...

If you have 4 cores, and the jobs are evenly distributed by load, wouldn't that make for a much more responsive machine? Would changes in polling strategy help, eg have executables elect to be fast or slow polling and be allocated to a fast or slow polling CPU as requested?