Search found 2937 matches

by Derek_Stewart
Sat Jun 25, 2022 7:47 pm
Forum: For Sale
Topic: FS: Tetroid Rom Switcher
Replies: 0
Views: 16

FS: Tetroid Rom Switcher

For sale : Sinclair QL ROM replacement - ROM switcher. Version 2 with external switches. This ROM switcher has 512Kb ROM , that allows to have 8 pages for 8 ROM images. ROM switcher has 4-position switch, 3 switches ( SW1 - SW3 ) for select the ROM image. SW4 switch adds ROM area C000 - FFFF ( for e...
by Derek_Stewart
Sat Jun 25, 2022 9:15 am
Forum: General QL Chat
Topic: Advanced QL User Guide
Replies: 29
Views: 907

Re: Advanced QL User Guide

HI, Thank you for the information. I have posted a comment on LinkedIn, on the Adder Technology company page on the most recent posting, maybe off-topic. But it is the only way to enter a message to anyone on LinkedIn, without paying £79.99 monthly fee. I have also send message via their Company Pro...
by Derek_Stewart
Fri Jun 24, 2022 11:31 pm
Forum: Hardware
Topic: QLUB Adapter - Initial Release...
Replies: 171
Views: 29431

Re: QLUB Adapter - Initial Release...

Chr$ wrote:Just noticed the Teensy 2.0++ is discontinued.

https://www.pjrc.com/store/teensypp.html


I bought, 5 on Aliexpress, less expensive than PRC, all work okay.

I will have to get the 5 PCBs I have built and get some cases 3D Printed.
by Derek_Stewart
Fri Jun 24, 2022 10:02 pm
Forum: General QL Chat
Topic: Advanced QL User Guide
Replies: 29
Views: 907

Re: Advanced QL User Guide

Hi, The book was published by Adder Publications. Adder Publishing began in 1984 and was rebranded as Adder Technology in 1986. So does the rebanding transfer the copyright to the new company brand The details of Adder Technology are detailed on their web site: https://www.adder.com/en/about-us
by Derek_Stewart
Fri Jun 24, 2022 4:02 pm
Forum: Hardware
Topic: Q68 Expansion Card
Replies: 2
Views: 84

Re: Q68 Expansion Card

:o I can think of a few things that mostly just involve some signal conditioning: QL Network ports I2C buffered/isolated outputs to protect the Q68 from unintended accidents by experimenters Another Serial port - perhaps as RS422/3 - as there are some interesting things that can be plugged into this...
by Derek_Stewart
Fri Jun 24, 2022 11:30 am
Forum: General QL Chat
Topic: Advanced QL User Guide
Replies: 29
Views: 907

Re: Advanced QL User Guide

...so do I send Adder Technology a notice, that I intend to publish the "The Advanced QL Manual" into the Public Domain, making all the contents of the book including software examples Open Source?

What period of notice fo you think is appropriate?
by Derek_Stewart
Fri Jun 24, 2022 11:25 am
Forum: Hardware
Topic: Q68 Expansion Card
Replies: 2
Views: 84

Q68 Expansion Card

Hi,

It is said in another thread, that a larger case for the Q68 could allow the addition of expansion cards for the Q68.

What type of expansion would everyone want?
by Derek_Stewart
Thu Jun 23, 2022 8:49 pm
Forum: General QL Chat
Topic: Advanced QL User Guide
Replies: 29
Views: 907

Re: Advanced QL User Guide

Hi

Okay, I will keep the completed text personal.

Pity...
by Derek_Stewart
Thu Jun 23, 2022 8:44 pm
Forum: Hardware
Topic: New Q68 Case
Replies: 5
Views: 267

Re: New Q68 Case

Dave wrote:My only thought on this is it would be nicer to have a taller case, with the Q68 mounted in the top of the case. This way, an expansion can sit under the Q68 instead of cramming in above it.

What sort of expansion would you want to fit?

How would this affect the case end plates?
by Derek_Stewart
Thu Jun 23, 2022 11:04 am
Forum: General QL Chat
Topic: Advanced QL User Guide
Replies: 29
Views: 907

Re: Advanced QL User Guide

Hi

Do response from Adder Technology, so if there is nothing forth comming I will apply a Open Source Licence to the scanned text, which has many corrections to be a Community Edition.

I will wait till the en of June for this.