The Sinclair QL Forum

Wonderful, thanks for sharing this.

great work guys! solid demo

Hey Mike,
Just a quick suggestion – you can set the PAL or NTSC mode directly in the Dithvide source code if that helps. To do so, you'd need to update the source to modify bit 6 whenever mc_stat is written.


mc_stat EQU $18063 master chip settings
screen1 EQU $20000
screen2 EQU $28000
* bit 1 ...

Understanding Flickering in Dithvide and How to Mitigate It

In very simple terms, flickering occurs when we alternate between two colors and average them to create a new one. Since this color change happens at a 50Hz rate, the flickering becomes visible to the human eye.

First Issue - Size of ...

The principle of this method lies in switching screens on each refresh by toggling bit 1 of the mc_stat (master chip settings). CPU speed and memory do not matter. This method works on BBQL by design.

In mixed mode, the screen switches every line. Proper timing is required, but if the executable is ...

one more note... you probably figured out naming convention in the "latest" image package https://1ca7c9a646.cbaul-cdnwnd.com/c6d6bd7ebf806f43c76acc3681703b81/200000358-e1173e2113/Screens.7z .
Each image has two files with the same name except of the last three characters:

AAn
-- AA = image mode ...

Hi everyone,

I'm the author of ql_dithvide , and I just wanted to share some thoughts after reading Mike’s incredible journey to get my messy code up and running. What a challenge! 😊 You truly have my respect, Mike. I’m seriously impressed by how you managed to figure everything out—great job!

You ...

Sorry for that guys. Better use links to files under the article : http://omega.webnode.com/products/sinclair-ql-dithvide-2/
I checked this again and it shall work:
file1: http://files.omega.webnode.com/200000598-b5d10b6cb6/screens_zip.txt
file2: http://files.omega.webnode.com/200000637-26805277ad ...

Hi pjw, thanks for sharing. Your environment looks very nice.

I've made a print routine for ZX Spectrum in assembly that uses Sincalir QL fonts with HDF extension (extras for QL DTP application. Maybe from Digital Precision.). I can dig the source code, routine was ~200 bytes long and speed was ...

Whatever works for you. My opinion is that user experience will be decreased, but don't take it as show stopper.