z88dk forums

First off, I'm really enjoying this tutorial, keep it up! Part 5, and today I will discuss how to end the game when the player touches a star. 4) game_over = bpeek(addr+1) == 0x17; So, we check if this address (addr+1) has 0x17 (as you might remember, 0x17 means the '*' character) in it, and if it d...

tschak909 wrote: ↑Fri Sep 08, 2023 11:17 pm broken link, thanks though.

https://bluebilby.com/developing-for-vz-part-2/

stefano wrote: ↑Fri Feb 10, 2023 10:18 pm SAM Coupè (this latter one required a bit of slowdown)

Is this maybe because it’s SAM Coupé’s evil twin?

alignas is implemented by SDCC - it's value however can only be 0 or 1 - see mailing list over on sourceforge.

And even for alignas, SDCC does AFAIK currently not support alignment
other than 0 or 1.

What are you trying to achieve with a one-liner? Unless you are writing source code on your target platform I would at least make it a bit more friendly on the eyes: return 30 + ( month % 2 && ( month <= 7 ) ) + ( !( month % 2 ) && ( month > 7 ) ) - ( ( 2 - isleapyear ) * ( month == ...

Perhaps the order the tracks and sides are stored in is different comparing one file type to another? Even if the layout on the original disks is still the same? I think that that you are hitting the nail on the head. It is not the disk interface that is causing the difference, but the internal lay...

Just checked the plus d disassembly , it is also using tracks 0 to 3 of the first side for the directory. unidos also uses tracks 0 to 3 of the first side for the directory. If you open your mgt image with Fuse with +D connected and boot (G+DOS2A), CAT 1 shows: files 1 - 16 files 25 - 26 files 28 - ...

The DISCiPLE, +D and SAM Coupé all use the same format for their default DOS, tracks 0 - 3 of side 0. They are interchangeable. - DISCiPLE disassembly - samdos disassembly The DISCiPLE was MGT's first disk interface for the ZX Spectrum, you could use any disk drive with, single sided, double sided, ...

Nice! The AY playback code is ancient and can probably be improved. One thing that popped up some time ago was a reference by Simon N. Goodwin in his book ' Beep to Boom: The Development of Advanced Runtime Sound Systems for Games ' stating that the SAA1099 has a logarithmic volume just like the AY....

Just checked, its pretty much identical. I've pasted a more "human friendly" version here. I'll refrain from updating the WoS page directly and relocking the download. :-) High byte is octave - so is in range 07 through 00, the low byte is the tone: ; 0x0000 defw 0x07ff defw 0x07ff defw 0x...

I've extracted the following table from the routine used for the "converted" Signal demo on Fred 24B from file "sf speccy" - I hope I'm reading my code correctly since the table is a bit smaller than 8k, but the build up of the table looks reasonable.

Great, I see it's been fixed - quick service :-) The -Wall addition to gccmake.bat is throwing -Wcomment warnings on z80asm srcfile.c and srcfile.h which has a a lot of open comments /* without closing comments. OK, so that's been fixed - thanks. I'm now experimenting with getting binaries built fr...

Great, I see it's been fixed - quick service :-) The -Wall addition to gccmake.bat is throwing -Wcomment warnings on z80asm srcfile.c and srcfile.h which has a a lot of open comments /* without closing comments. ------------------------------------------------------------------------------ CenturyLi...

Hi, I was a SAM Coup? Z80 coder in the nineties and am now working in a team creating accounting software with Progress OpenEdge. I feel I've missed a few steps between hard core Z80 (I wrote the SAM Coup? MOD player ) and what I'm currently doing (high level database language stuff), so I am lookin...

It wouldn't happen to be this part in cli.c?
Does the intermediate assembled version show anything else referencing the address?
Can you trap changes to the address with a debugger?

Interfaces for standard C linkage and C callee linkage will then appear in their own files: ============= HeapRealloc_callee: pop hl pop bc pop de ex (sp),hl jp asm_HeapRealloc AND: HeapRealloc: pop af pop bc pop de pop hl push hl push de push bc push af jp asm_HeapRealloc ============= The cost is...

That's a weird one, it looks like there was an "x11" folder at one point in time that was replaced with X11. I've now deleted the local copy and hopefully it won't show up again. I saw the rename in CVS but did not match that to the contents of x11 and X11 both existing... it was the only...

Curious about the discussion: is there a thear I could peep in ? :) Sure: Cross platform development - http://www.worldofspectrum.org/forums/showthread.php?t=45686 Collision Detection in SP1 - http://www.worldofspectrum.org/forums/showthread.php?t=45569 Documentation for SP1 for Z88DK? - http://www...

Sparked by all the recent z88dk discussion on WoS I decided to have a quick look. I downloaded the nightly windows build and while unzipping got several warnings "Destination folder already contains processed file. Would you like to replace the existing file" z88dk\include\X11\CVS contains...