Sinclair ZX80 / ZX81 / Z88 Forums

Very good, Martin! I want to inform you that I made a small change in the block structure excluding the null byte at the end, so in TForth 1.5 the block will have 768 bytes. Sorry for this inconvenience but I believe that using blocks without the null byte is more practical and is how it is used in ...

In the past as you know I have been sometimes critical of Toddy but now nearly everything is place I have decided this is the Forth for me from now on. Yes, I know that and I'm happy that the recent upgrades have made TForth more usable. And I have news: I managed to include the ZXpand CAT command ...

?TERMINAL has always been present at Toddy Forth, but for my carelessness it was left out of vocabulary. It is even used in the definition of VLIST to pause the words listing when BREAK key is hold. Its operation is simple: if the BREAK key is activated during the execution of ?TERMINAL, -1 (TRUE) i...

You mention downloading the compiler but the problem is I'm not very good with these things and wouldn't know how to compile. :oops: :oops: But no worries. Oh, sorry if you got confused, when I said compiler I was referring to the new TForth1.4 package with the inclusion of word ?TERMINAL that I up...

It has been a few years since we talked about the problems with Toddy and external keyboards. I'm happy to say this latest version performs excellently with Memotech, Fuller and Crofton keyboards. :D Great! I was really curious about this! I'm glad it's working well! A call to break during runtime ...

If you disable ZXpand while copying the ROM chars and enable ZXpand again afterwards, then we can enjoy both ZXpand AND UDG. You're right, I don't know how I didn't think about it before :oops: but now it's done! Now ZXpand is only activated during the execution of FLOAD or FSAVE! I updated the ani...

Hello Martin and everyone! Great job you did here! I'm glad to know that there's still someone using Toddy Forth, it inspires me to continue with development. In fact, a few days ago I started to rework at Toddy Forth and I am doing a complete remodeling, trying to adopt a pattern to follow among so...

Has anyone built or used one of the ZX81 clock doublers ? If so where there any gotyas or was it difficult to get working ? I use it through the ZXULA-2, an ULA replacement made by Andy Rea some time ago: ZXULA2.jpg Here it running the CLCKFREQ test, with ZXpand patched with ZX81X2 ROM: https://you...

This is one more example, where multiple keys may be pressed at the same time: while holding the fire button down (e. g. SPACE key), it is possible to move the craft up(A)/down(Q)/right/left: http://www.zx81stuff.org.uk/zx81/tape/3DDefender But Siggi, the interface works like this, I don't understa...

The purpose of these small samples of modifications is not to denounce problems in this game, but to show that the basic standard can very well be adapted on the Zx81, but with small tricks specific to the machine. Don't worry about it, I appreciate your suggestions, they are welcome ;) My intentio...