Search found 250 matches

by marste
Sun Nov 19, 2023 7:26 pm
Forum: ZX BASIC
Topic: ZX81 1K Space Saving Tips by Sean A Irvine
Replies: 2
Views: 7155

Re: ZX81 1K Space Saving Tips by Sean A Irvine

As an additional comment, if you don't need floating point or flicker free running screen, ZX80 basic is both more efficient on memory and much much faster!
by marste
Sun Oct 08, 2023 5:10 pm
Forum: Development
Topic: A veri nice escursion on the ZX80 and ZX81 video generation
Replies: 0
Views: 12737

A veri nice escursion on the ZX80 and ZX81 video generation

A bit longish but very nicely done. This series of videos take you step by step to the final design: 1. https://www.youtube.com/watch?v=pVQJxV9JCSE - ZX80/81 Video circuit generated from scratch 2. https://www.youtube.com/watch?v=T5yu_0K32s8 - Video circuit revealed, hi-res display of 256 x 192 pixe...
by marste
Tue Sep 26, 2023 11:48 am
Forum: WANTED
Topic: Looking for a ZX80 manual
Replies: 1
Views: 4756

Re: Looking for a ZX80 manual

by marste
Tue Sep 26, 2023 11:25 am
Forum: Hardware
Topic: ZX81 Keycap Stickers?
Replies: 7
Views: 1116

Re: ZX81 Keycap Stickers?

custom keycaps might be better than stickers...
here a video with all the explanations: https://www.youtube.com/watch?v=c1G5rX_YvCA
by marste
Thu Jul 06, 2023 7:05 pm
Forum: Emulators
Topic: ZX80 / ZX81 Emulator for the Raspberry Pi Pico
Replies: 46
Views: 33130

Re: ZX80 / ZX81 Emulator for the Raspberry Pi Pico

This may be a very niche area, but I’ve recently pulled together code from the community to create a ZX80/81 emulator running on the Raspberry Pi Pico I've not a pico around me just now but for what I've seen I would like to give my plause to you @Exile !! PS: for information I'm trying to have an ...
by marste
Tue May 02, 2023 10:40 pm
Forum: SALES
Topic: BOOK: 81 hires games for the 1K ZX81
Replies: 20
Views: 13721

Re: BOOK: 81 hires games for the 1K ZX81

https://www.amazon.it/81-hires-games-1K ... B0C2RW1TH1

The link for italian store. I think all can be reached just replacing ".it" with the appropriate nation...

My copy is being sent! :)
by marste
Tue May 02, 2023 10:23 pm
Forum: Sinclair Misc
Topic: The poem for retrocomputing enthusiasts
Replies: 2
Views: 5152

The poem for retrocomputing enthusiasts

In the land of the binary, long ago, Where circuits glowed and screens were slow, A new age of computing had begun, Machines on desks, small but fun. The geeks of the world did gather 'round, To hear the clicking beeps of these machines' sound. The games were simple, but still we played, On screens ...
by marste
Sat Feb 25, 2023 7:49 pm
Forum: ZX BASIC
Topic: Personal challenge: Writing a text adventure in 1k for the zx80
Replies: 7
Views: 1620

Re: Personal challenge: Writing a text adventure in 1k for the zx80

The ZX80 vars are more compact and not very much free space to be used in basic start. Anyway in the kit there is the best solution I've found (if there are better I'm all ears :) ), surely more than enough for a loader program. And to be clear: the basic is to start, the rest should be machine code...
by marste
Sat Feb 25, 2023 11:18 am
Forum: ZX BASIC
Topic: Personal challenge: Writing a text adventure in 1k for the zx80
Replies: 7
Views: 1620

Re: Personal challenge: Writing a text adventure in 1k for the zx80

On a ZX81 I have placed the basic over the sysvar, need to check how it can be done on the ZX80. You can have a look at the 1K starter kit: https://sinclairzxworld.com/viewtopic.php?f=6&t=2349 It contains example program (for both machines), assembler, instructions and possibilty to debug with Visu...
by marste
Sat Feb 25, 2023 2:52 am
Forum: ZX BASIC
Topic: Personal challenge: Writing a text adventure in 1k for the zx80
Replies: 7
Views: 1620

Re: Personal challenge: Writing a text adventure in 1k for the zx80

Really a short one and filled with a lot of imagination in between I think. Anyway agree with machine code. Using a set of 32 characters I think you can save text to print in 5 bits per character compacting all text together and call a routine with initial char and end char parameters for printing. ...