Search found 302 matches

by kmurta
Sun Feb 28, 2021 6:37 pm
Forum: Software
Topic: HiRes package for Toddy Forth
Replies: 19
Views: 5573

HiRes package for Toddy Forth

Hi people! Here is a basic high-resolution graphics package to use with Toddy Forth (I recommend versions >= 1.5 , not tested with the previous ones). The graphic screen has a resolution of 256x192 pixels, with the coordinate (0,0) located at the bottom left of the screen, and the coordinate (255,19...
by kmurta
Sun Jan 24, 2021 4:58 pm
Forum: Development
Topic: Some reading for Toddy Forth.
Replies: 8
Views: 2485

Re: Some reading for Toddy Forth.

For everyone using Toddy Forth, is worth it to correct the differences and make Toddy Forth more conforming to Forth-79?

The changes to be made are simple and I would have no objection to making them. So I leave the decision to who actually uses the system.
by kmurta
Sun Dec 13, 2020 12:49 am
Forum: Emulators
Topic: MSX - Amstrad - Enterprise emulating a Zeddy?
Replies: 11
Views: 5738

Re: MSX - Amstrad - Enterprise emulating a Zeddy?

Hi, In 1987, a ZX81 emulator for MSX1 was launched in Brazil, developed by Rubens Pereira Silva Jr. and marketed by the company "KRON Publicações e Planejamento de Sistemas Ltda". Here you can download it: http://msxbytes.blogspot.com/2011/11/emulador-de-zx81.html and here the review of the Brazilia...
by kmurta
Mon Dec 07, 2020 3:54 pm
Forum: ZX BASIC
Topic: Using MCoder2 in EightyOne
Replies: 53
Views: 14638

Re: Using MCoder2 in EightyOne

Click on picture to see th animated gif
mcoder2.gif
by kmurta
Mon Dec 07, 2020 3:14 pm
Forum: ZX BASIC
Topic: Using MCoder2 in EightyOne
Replies: 53
Views: 14638

Re: Using MCoder2 in EightyOne

Take a look at this manual to see if you are following the correct procedure.

https://docs.google.com/viewer?a=v&pid= ... zYzMjc0NjU

But remember, once Mcoder is loaded above RAMTOP, there is less than 12Kb left for your BASIC program.
by kmurta
Thu Oct 15, 2020 9:13 pm
Forum: Software
Topic: BR programs recovery
Replies: 3
Views: 3598

Re: BR programs recovery

Here are the converted programs, the "Demolidor" must be run at 60Hz (NTSC), but in the EightyOne emulator the screen is shifted to the left. Both would run at 2Kb, but interestingly they were saved with the entire screen file, without compression, so you need more memory to load them. Demolidor.p M...
by kmurta
Thu Oct 15, 2020 8:41 pm
Forum: Welcome Area
Topic: Hello from Brazil
Replies: 10
Views: 7163

Re: Hello from Brazil

Hello Rogério, welcome!

I am also from Brazil and my first computer was also a TK82 and I still have it!
by kmurta
Sat Sep 26, 2020 5:41 pm
Forum: Development
Topic: Splash Scree
Replies: 10
Views: 11835

Re: Splash Scree

There is this very good app that I use to create animated gifs, GIFCAM:

http://blog.bahraniapps.com/gifcam/
by kmurta
Sun Aug 16, 2020 7:11 pm
Forum: Software
Topic: 2001 - A ZX81 Odyssey
Replies: 1
Views: 6419

Re: 2001 - A ZX81 Odyssey

Very good! It produces a very cool and hypnotic effect!
by kmurta
Sun Aug 02, 2020 6:49 pm
Forum: Development
Topic: Counting TStates
Replies: 3
Views: 6754

Re: Counting TStates

It is still manual calculation (and when you start seriously to count TStates you'll know the single instruction ones by heart ;)). Indeed, semi manual, you still have to calculate the total cycles in loops and conditional jumps, but it helps a lot to visualize the count of cycles and bytes of the ...