Search found 15 matches

by leiradel
Mon Dec 21, 2020 10:30 pm
Forum: Development
Topic: QR Code version 11
Replies: 1
Views: 1217

Re: QR Code version 11

And now Code 2 of 5, which takes much less code to implement and can represent 16 digits using 2x2 pixels on a Speccy.

Image
by leiradel
Sun Dec 20, 2020 12:22 pm
Forum: Development
Topic: QR Code version 11
Replies: 1
Views: 1217

QR Code version 11

Hi All,

I've merged a PR that implements QR Code version 11 in Z80 assembly, along with a plotter for the ZX Spectrum. QR Code version 11 can encode 251 bytes of information.

https://github.com/leiradel/qrc1

Cheers,

Andre

Image
by leiradel
Mon Nov 09, 2020 9:41 am
Forum: Development
Topic: QR Code version 1
Replies: 14
Views: 7989

Re: QR Code version 1

XavSnap wrote: Mon Nov 09, 2020 2:44 amI'm now able to code a new QRcodes interactive adventure game…
The possibilities are endless! :)
by leiradel
Sat Nov 07, 2020 12:56 pm
Forum: Development
Topic: QR Code version 1
Replies: 14
Views: 7989

Re: QR Code version 1

ZX Spectrum sample code added! The code is capable of plotting the barcode using 1x1, 2x2, and 4x4 square pixels per module, selectable in compile time. The encoder and plotter code is shared between the ZX81 and ZX Spectrum versions, only the pixel routines are specific to each of the platforms. ht...
by leiradel
Sat Nov 07, 2020 12:53 pm
Forum: Development
Topic: QR Code version 1
Replies: 14
Views: 7989

Re: QR Code version 1

Then you could make a bigger version for ZX81 as well as is supports a resolution of 256x192 pixels. With HRG driver like used by Z88dk. In general the ZX printer is able to print high resolution graphics as well, maybe a special driver is needed. My goal for now is to show them on the screen. As f...
by leiradel
Thu Nov 05, 2020 12:44 pm
Forum: Development
Topic: QR Code version 1
Replies: 14
Views: 7989

Re: QR Code version 1

QRCODE.P Not sure what you're trying to do, the machine code cannot be relocated as it uses some absolute addresses, but you've added a line before the QR Code routines that live in line 10: 0 REM #5 ?)# U#RND RETURN #C- RETURN #C) RETURN #C� RETURN #ASN aINKEY$ RETURN #ASN PAUSE INKEY$/#;;;63INKEY...
by leiradel
Thu Nov 05, 2020 10:09 am
Forum: Development
Topic: QR Code version 1
Replies: 14
Views: 7989

Re: QR Code version 1

XavSnap wrote: Thu Nov 05, 2020 8:27 ambut you can throw the HR QRcode, directly to the ZxPrinter
That'd be great, PRs welcome! ;)
by leiradel
Thu Nov 05, 2020 10:06 am
Forum: Development
Topic: QR Code version 1
Replies: 14
Views: 7989

Re: QR Code version 1

PokeMon wrote: Wed Nov 04, 2020 11:34 pm Nice - what resolution would be needed for a bigger QR code ? 8-)
Version 11 needs 61x61 pixels to render, the largest one needs 149x149. This page has detailed information about all QR Code sizes, capacities etc.
by leiradel
Wed Nov 04, 2020 7:31 pm
Forum: Development
Topic: QR Code version 1
Replies: 14
Views: 7989

QR Code version 1

Hi All, I've written a QR Code version 1 generator in Z80 assembly, along with a plotter for the ZX81: https://github.com/leiradel/qrc1 QR Code version 1 can encode 14 bytes of information. There's a PR which I'm changing a bit with a version 11 generator, capable of encoding messages with up to 251...
by leiradel
Mon Jul 27, 2015 3:25 am
Forum: Emulators
Topic: EO + ZXpand?
Replies: 26
Views: 26356

Re: EO + ZXpand?

chernandezba wrote:You can test these Chroma81 programs in my emulator ZEsarUX ;)
Thanks, but 81-libretro already emulates the Chroma 81 :)