z88dk forums

yes. it was too hard to maintain a community around it. my conclusion on this work : making a general purpose framework for 8 bits machines is bad idea ; it results un-optimized code (because of the 'generic' constraints).

www.norecess.net

It's no longer supported for a long time.. sorry !

If you failed trying running the beast, contact me (my mail is shown at arnaud.storq.googlepages.com). I will send you the stuff

For (ugly) source-code, check here http://arnaud.storq.googlepages.com/crocolib (svn repository is shown there)

Video ! http://fr.youtube.com/watch?v=HIaVST3ycCY

Bad quality, sound desync, but at least it gives an idea.

I will put here in few days the YouTube video of the demo ! )

Under WinAPE, CRTC3 + Enable Plus + Enable PPI should be OK, but perhaps I am missing something.

Hi guys, I just finished my Amstrad CPC demo (Plus machines) ! It's completely done using z88dk. This is going to have an impact on Amstrad CPC demoscene, as this is the real first C demo for it. For that purpose, I decided to write comments about z88dk/CPC here : http://arnaud.storq.googlepages.com...

Yop, The problem : when loading the binary generated by z88dk from BASIC, fopen operations are working OK. But when executing the z88dk binary directly as an executable, it fails its loading by displaying the "press play then any key" message. The solution : Got it ! I had to ask to an Ams...

Hi there,

Could be nice to get a release at a more quickly rate..

"release often" is the way your users won't never be disappointed even if there are few features / bug fixes and so on.

Hi, First, on CPC platforms you should never play with interrupts. You can not access system features (loading a file, changing video mode..) by disabling them. I noticed by disassembling a z88dk compiled program, than a DI instruction is made before entering main( ). I also noticed the EI after lea...

Thank you, that's exactly the behavior I expected

Hi there,

Does the next code..
..takes less memory space than..
because in the first sample the value is directly written at the good memory location of g_globalVar variable ?

Thank you,
Arnaud

This is off-topic, but I sent here a trick to enable pure C assertions (http://www.z88dk.org/forum/viewtopic.php?id=2775). This works conjointly with WinAPE Amstrad CPC emulator.

I think I did right posting that question here

Thank you,
Arnaud

Hi there,

Could you make a short explanation of the register C instruction, and how it behaves when using it through z88dk ?

Thank you
Arnaud

Yop, When using WinAPE Amstrad CPC emulator, if runned code is 0xED, 0xFF then it activates a Breakpoint and show the debugger. I added the followiing in my z88dk project : #define crASSERT( expression ) \ if ( !( expression ) ) \ { \ asm( "defb $ed, $ff" ); \ } #define crBREAK( ) \ asm( &...

You know, what really bores me with asm code is init - always dealing with registers / memory address / etc. I like using C for these stuff, but still keeping my innerloops in pure ASM for performance reasons. As a plus, prototyping in C then optimizing in ASM on same target machines is really nice ...

Yeah, and few weeks after starting using z88dk, I still think z88dk is really a fresh air in z80 development !

Well, actually it's not an issue anymore. It seems to be a pretty bad design problem from me to try putting everything under asm statement :) BTW, just to bounce on this, know that #define M_OUTP(port,byte) asm("ld\tbc,"#port"\nld\ta,"#byte"\nout\t(c),a\n"); can be writ...

Confirmation :

defs 4, $c5; // push bc * 4

this is ok, thank you!

I was not able to insert labels in the macro..

Thank you Dom, I understand the problem.

If I decide to switch for

#define M_OUTP(port,byte) asm("ld\tbc,"#port"\nld\ta,"#byte"\nout\t(c),a\n");

Am I allowed to use address such as .loop dec a\njr nz,loop\n ?

Thank you,
Arnaud

Hi there,

How can specify an item to be repeated several times in an ASM buffer?

Something such as REPEAT( 4, 12 ) which would produce the following :
Thank you,
Arnaud

Hi there, Made a long time I did not post around, hehe. :) I have the following working code : ld sp, hl; .lineLoopcount pop hl; ld ( prevSPcount + 1 ), sp; add hl, de; ld sp, hl; push bc; push bc; .prevSPcount ld sp, 0; dec a; jp nz, lineLoopcount; When I try to embeed this code into a macro like t...

OK. I would like to check this.. unfortunately, I'm more a SVN user, hehe. Is there a night-build released somewhere ? Thank you.