You have a birthday and we get a present?
Waiting to see your new creation, thank you!
Search found 302 matches
- Fri Dec 09, 2022 8:07 pm
- Forum: Development
- Topic: Announcement: incoming birthdaypresent AROTZX81
- Replies: 3
- Views: 998
- Mon Dec 05, 2022 8:05 pm
- Forum: Software
- Topic: Turtle Graphics for Toddy Forth-79
- Replies: 3
- Views: 2144
Lévy's C Curve
A procedure for drawing the Levy c-curve : VALUE SIZE DEFINE C-CURVE ( n -- ) ?DUP 0= IF SIZE FORWARD EXIT THEN 45 LEFT DUP 1- RECURSE 90 RIGHT DUP 1- RECURSE 45 LEFT DROP END Set an appropriate segment length and then execute C-CURVE with the number of iterations on the stack. Examples of use: 400 ...
- Sat Dec 03, 2022 1:22 am
- Forum: Software
- Topic: Turtle Graphics for Toddy Forth-79
- Replies: 3
- Views: 2144
Fractal Fern
The Barnsley fern is a fractal named after the British mathematician Michael Barnsley who first described it in his book Fractals Everywhere. from Wikipedia Below is a procedure for drawing a variation of the Barnsley fern. Usage is: size angle FERN Where size is the lenght of leaf and angle is the...
- Mon Nov 28, 2022 12:16 am
- Forum: Software
- Topic: Turtle Graphics for Toddy Forth-79
- Replies: 3
- Views: 2144
Turtle Graphics for Toddy Forth-79
TF79TG.PNG In the 1980s, one of the things that most caught my attention in computer science journals were the articles about the Logo language. I managed to replicate some of those fascinating graphics on my TK82C, but on a 64x44 pixel screen and with Basic's slowness, the result left much to be d...
- Sun Nov 27, 2022 7:24 pm
- Forum: Development
- Topic: ZX81 Toddy Forth-79
- Replies: 41
- Views: 12925
Re: ZX81 Toddy Forth-79
I recently made some updates to the EDITOR and HGR extensions to fix bugs and add new features, they are: EDITOR: - correction of a bug that occurred in FILE mode and caused the system to crash when deleting or adding lines. - added the V command to clear the current screen. HGR: - correction of a b...
- Wed Nov 02, 2022 2:09 pm
- Forum: Development
- Topic: Setting up an eprom with coral basic interpreter
- Replies: 91
- Views: 45109
Re: Setting up an eprom with coral basic interpreter
I disabled the mirroring ram in 8k to 16k while having the 16kb ram pack loaded. What do I do wrong, or else, where am I being stupid ? :cry: My apologies, you're not being stupid! I mistakenly assumed that CBI-REL.P already moved the relocated code to the new address, but it doesn't. Furthermore, ...
- Wed Nov 02, 2022 1:07 pm
- Forum: Development
- Topic: Setting up an eprom with coral basic interpreter
- Replies: 91
- Views: 45109
Re: Setting up an eprom with coral basic interpreter
Disable "Auto LOAD on Insert", it's the last icon on the top right in the Tape Manager.
- Tue Nov 01, 2022 6:31 pm
- Forum: Development
- Topic: Setting up an eprom with coral basic interpreter
- Replies: 91
- Views: 45109
Re: Setting up an eprom with coral basic interpreter
Hi friend, sorry for the delay, unfortunately real life is hard and I don't have all the time I would like to dedicate to the ZX81, but I will try to help you. First set RAMTOP to address 27400: POKE 16388,8 POKE 16389,107 NEW and loads the CBI.P, then loads the CBI-REL.P, set the destination addres...
- Sun Oct 30, 2022 8:37 pm
- Forum: Development
- Topic: Setting up an eprom with coral basic interpreter
- Replies: 91
- Views: 45109
- Sun Oct 16, 2022 10:28 pm
- Forum: Development
- Topic: ZX81 Toddy Forth-79
- Replies: 41
- Views: 12925
Re: ZX81 Toddy Forth-79
Thanks Martin and Moggy for the kind words. A video demonstrating some features: https://youtu.be/6MJHeJtC_WE Edited: The ROTSOM that appears in the video is not included in the TF79 package, so I make it available below. \ ROTSOM : SON 15 8 SOUND 254 7 SOUND ; : SOFF 0 8 SOUND 255 7 SOUND ; : ROTSO...