Search found 12 matches

by loftcat
Mon May 31, 2021 12:37 pm
Forum: ZX BASIC
Topic: Writing data files
Replies: 6
Views: 590

Re: Writing data files

One hint: if you use SAVE within a running BASIC program (to continue the program there after LOAD), the SAVE command may be used only in the main program, not located a sub-routine!!! The reason is, that the RETURN address of the sub-routine is stored on the BASIC stack, which is NOT saved by the ...
by loftcat
Mon May 31, 2021 12:42 am
Forum: ZX BASIC
Topic: Writing data files
Replies: 6
Views: 590

Re: Writing data files

Ah yes of course, I will take the player back to the main menu after saving the game.
by loftcat
Sun May 30, 2021 8:45 pm
Forum: ZX BASIC
Topic: Writing data files
Replies: 6
Views: 590

Re: Writing data files

Thanks for the info and ideas, much appreciated. I'm making quite a large game that will take up 16k. Would it be a fairly acceptable solution to save the program with variables in their current state. Then when the player wants to continue where they left off, load the entire game with variables in...
by loftcat
Sun May 30, 2021 1:23 pm
Forum: ZX BASIC
Topic: Writing data files
Replies: 6
Views: 590

Writing data files

Is there a way to write data files on the ZX81, similar to using OPENOUT / PRINT# in BBC BASIC? http://www.riscos.com/support/developers/bbcbasic/part2/datafiles.html I'm writing a ZX81 Basic game where I would like the player to be able to save their position. Is the standard Zeddy way to save the ...
by loftcat
Sun Apr 25, 2021 12:29 pm
Forum: ZX BASIC
Topic: Load and immediately run a ZX81 Basic program
Replies: 3
Views: 465

Re: Load and immediately run a ZX81 Basic program

Perfect just what I was looking for thank you both.

Rechecked the manual too and found the page you're referring to in Chapter 16... I must have missed that page, thanks again!
by loftcat
Sun Apr 25, 2021 10:30 am
Forum: ZX BASIC
Topic: Load and immediately run a ZX81 Basic program
Replies: 3
Views: 465

Load and immediately run a ZX81 Basic program

Apologies in advanced if this seems like a straight-forward question, I've looked in the ZX81 Basic manual and can't find the answer...

Is it possible to save a Basic program so when it's loaded back in it runs immediately, rather like in Spectrum Basic by using SAVE "NAME" LINE 10 ?

Thanks!
by loftcat
Fri Apr 16, 2021 12:40 am
Forum: GAMES
Topic: New Adventure Game - The Crystal Frog
Replies: 38
Views: 19839

Re: New Adventure Game - The Crystal Frog

Thanks for the info on Alzan, I'll take a closer look although I'm particular interested in The Quill.
How does your on-going Quill project work? Can it load ZX81 files or are they standalone maps?
by loftcat
Wed Apr 14, 2021 8:15 pm
Forum: GAMES
Topic: New Adventure Game - The Crystal Frog
Replies: 38
Views: 19839

Re: New Adventure Game - The Crystal Frog

I know this is a very old thread, just wondering if Gus or anyone else has progressed The Quill for the ZX81 and if it's still available?
by loftcat
Tue Apr 13, 2021 3:59 pm
Forum: Hardware
Topic: ZX80 loading from tape
Replies: 3
Views: 418

Re: ZX80 loading from tape

I've got things loading okay using WAV files and Audacity, the excellent Volume Tester Utility (http://www.fruitcake.plus.com/Sinclair/ ... Tester.htm) helped me out here.

Still baffled why I have a white loading screen on a b&w CRT TV, but it's not a problem, just a curiosity!
by loftcat
Fri Apr 09, 2021 6:16 pm
Forum: Hardware
Topic: ZX80 loading from tape
Replies: 3
Views: 418

Re: ZX80 loading from tape

Yes it's a early 90s mini 5.5 inch portable black and white TV.. Small but gives a pretty decent picture - black text on white background. Should I typically expect to see a black background on my CRT B&W TVs?