Search found 168 matches
- Sun Jan 15, 2023 11:45 pm
- Forum: Software & Programming
- Topic: What the QL has done for me...
- Replies: 0
- Views: 5005
What the QL has done for me...
Here's a screenshot I just made, on a computer that thinks it's a QL, but obviously isn't really. https://www.rickdangerous.co.uk/zx/misc/qltest.png Despite the odd text size, It's just a Spectrum screenshot, isn't it? Isn't it? Clearly that's just a load of PLOT and DRAW statements that's done that...
- Sat Apr 23, 2022 5:36 pm
- Forum: The Off-Topic Section
- Topic: Happy Birthday!
- Replies: 437
- Views: 223670
Re: Happy Birthday!
Happy birthday, Spectrum, and cheers for being there for me even when I didn't realise I needed it. I would say "allow me to spin a yarn with only the mildest of apologies for those who have heard it all before, or who might read it on any other Sinclair-related forum"... but I re-read it ...
- Sat Apr 23, 2022 2:20 pm
- Forum: Software & Programming
- Topic: The Noob's Machine Code Thread
- Replies: 24
- Views: 4987
Re: The Noob's Machine Code Thread
The problem of porting BASIC programs gets worse, I have been porting some Spectrum programmes which apart from the Spectrum PRINT statement being different on the QL, that is no formatting statements allowed in the QL PRINT command. The main problem area is that Spectrum BASIC allows varaibles and...
- Thu Apr 21, 2022 8:54 pm
- Forum: Software & Programming
- Topic: The Noob's Machine Code Thread
- Replies: 24
- Views: 4987
Re: The Noob's Machine Code Thread
Good advice on the procedures, there! It seems I''ve done something I curse Spectrum programmers for when I'm using BASin to write with - it gets very angry if, say, the programmer has used any token names to define a variable - IN, OUT, IF and TO being the most obvious offenders. I wasn't thinking ...
- Wed Apr 20, 2022 7:50 pm
- Forum: Software & Programming
- Topic: The Noob's Machine Code Thread
- Replies: 24
- Views: 4987
Re: The Noob's Machine Code Thread
Looking through your guide, it did occur to me that I might have to do an "add 1"/"sub 1" instruction for INC and DEC. It's good to know about the DBRA ending at -1 as well - at least I'd know to decrease the count from Z80 code by 1. Provided I remember, that is... Anyway, this ...
- Mon Apr 18, 2022 6:15 pm
- Forum: Software & Programming
- Topic: The Noob's Machine Code Thread
- Replies: 24
- Views: 4987
Re: The Noob's Machine Code Thread
Congraturation, I sucsess! I now have 168 bytes of 68008 machine code that does what I want it to do. It's very crude, that's for certain - though less crude than the ZX81 original. All I have yet to work out is how to make loops, as I have yet to find if there's an equivalent of INC, DEC and DJNZ (...
- Mon Apr 18, 2022 3:43 pm
- Forum: Software & Programming
- Topic: The Noob's Machine Code Thread
- Replies: 24
- Views: 4987
Re: The Noob's Machine Code Thread
Right, now I'm getting somewhere. I found DC.B and BSR within about five minutes of the last post. Thinking that I might only have RTS to deal with, my original Z80 code had RET C to return early from the subroutine - I've changed it to JR C,{labelled_RETline} to jump to the final RET, it adds one b...
- Mon Apr 18, 2022 2:21 pm
- Forum: Software & Programming
- Topic: The Noob's Machine Code Thread
- Replies: 24
- Views: 4987
Re: The Noob's Machine Code Thread
I would advise starting with the eBook version of the long running series in QL Today . That's available to download from https://github.com/NormanDunbar/QLAssemblyLanguageBook/releases/latest. I'm looking at it now. Before the weekend I compiled a list of Z80 instruction groups that I'd need to be...
- Fri Apr 15, 2022 2:10 pm
- Forum: Software & Programming
- Topic: The Noob's Machine Code Thread
- Replies: 24
- Views: 4987
Re: The Noob's Machine Code Thread
The "correct" way is to create a new SuperBasic keyword that takes 4 parameters and returns the result as a string, no PEEKing and POKEing. What you're planning is a botch, but should work in principle. Well... that's what I've already done, seeing as that's what two years of fiddling aro...
- Thu Apr 14, 2022 11:15 pm
- Forum: Software & Programming
- Topic: The Noob's Machine Code Thread
- Replies: 24
- Views: 4987
The Noob's Machine Code Thread
I may have been away a while, but I am not dead. And over the last three days, I've been hammering away on a QL again. (Well, QemuLator, but you get the idea). And I have written a fine SuperBASIC program - which works exactly the way I want it to, except for a few sound effects that I haven't exper...