z88dk forums

If you're using sdcc then you've run into the need to specify printf formatters, add something like: #pragma printf "%d %0.f %s %c" To clock.h and you'll get some numbers printed. See https://github.com/z88dk/z88dk/wiki/Classic--Pragmas#configuring-printf-and-scanf-converters for details I...

Assuming that the ROM is paged in, then -pragma-export:CRT_FONT=nnnn will use the ROM version.

Simplest way: --generic-console as the arguments and then <video/tms99x8.h> and call vdp_set_mode(0)

And then remove the code for the other modes with:

; -pragma-define:CLIB_DISABLE_MODE1=1 (also disables mangled mode)
; -pragma-define:CLIB_DISABLE_MODE2=1
; -pragma-define:CLIB_DISABLE_MODE3=1

Obviously these days I’m a jack-of-all-platforms rather than a specialist but I am initially surprised that MSX style mappers don’t exist on the SVI.

The good news is that it doesn't occur with a recent nightly - we upgraded sdcc in January.

The correct maths library needs to be used! -lmath48 instead of -lm - see: https://github.com/z88dk/z88dk/wiki/Cla ... ---lmath48

I hope I'm answering the right question! For banking we use pretty predictable section names: eg for zx: SECTION BANK_6 org 0x060000 + CRT_ORG_BANK_6 SECTION CODE_6 SECTION RODATA_6 SECTION DATA_6 SECTION BSS_6 SECTION BANK_6_END eg for msx: SECTION BANK_01 org $010000 + CRT_ORG_BANK_01 SECTION CODE...

It's of course possible to use z88dk to create pure assembler projects optionally picking and choosing which library routines you may want to use. As a simple skeleton, here's something simple for +zx: ; example.asm ; zcc +zx example.asm --no-crt -create-app defc __crt_org_code = 30000 org __crt_org...

Now my travels are over for a while I've re-opened registrations.

Some things to note: - each sub expression on a line is dumped separately - you’ve spotted that already. - the optimiser may throw away some of the annotations - likewise you’ve seen that. - C_LINE can be extracted from the map file to provide an address to source code line mapping. C_LINE 8,"f...

All the information you need (and more) is actually in the cdb files. However since you’re working from .lis files that’s not much use! I’m currently semi-afk for the next week (aka I won’t have much time until later this month). But if you can specify the format you want I’ll update sccz80 to match...

Take a look here: https://github.com/z88dk/z88dk/wiki/Classic--Homebrew

There’s an example of your use case and info on how to generate an ihex file in one command.

The bin file just contains the code. The rom file also has the data section inserted at the appropriate place.

If you’re not using any statics the difference in file size will be minimal.

Yes. From memory most of them set sp to an absolute address.

That symbol is probably the closest you‘ll get IF the stack has been set. The setting of sp is here: https://github.com/z88dk/z88dk/blob/master/lib/crt/classic/crt_init_sp.inc There are ways of walking the frame at runtime using ix eg see cmd_backtrace here: https://github.com/z88dk/z88dk/blob/maste...

I think it's easiest if you break it down into multiple questions. 1. Can you have multiple sections for C code. Yes! Just use the pragmas to place things in the section you desire. 2. If you do this, does appmake handle it in one step. No. Appmake doesn't handle it. As noted in the previous thread ...

This is probably the easiest way to do it - just do an interslot call to reset back to SCREEN 0. #include <msx.h> #include <stdlib.h> #include <stdio.h> void main() { clg(); vdp_set_mode(mode_2); while (!getk()) { } #asm CALSLT: EQU $001C EXPTBL: EQU $FCC1 ld iy,(EXPTBL-1) ;BIOS slot in iyh ld ix,$0...

No worries. We’ve all had Heisenbugs!

That’s good news!

Sourceforge is just setup as a mirror of GitHub. I’ve just found out that it doesn’t update the “default download” when you do that.

Release versions lag a fair bit (eg there’s been about 1000 changes since 2.3) so taking a nightly build is usually the better option.

That bit of code sign extends an 8 bit value to a 16 bit value. I suspect we're missing a couple of diagnostics, but the way I can reproduce what you're seeing is this: extern void jlbputs_cons(char *); int main() { char roms = "/cores"; jlbputs_cons(roms); } Which obviously doesn't match ...

I'll be honest I'm struggling to reproduce this one with 2.3 and later. I've even run the Windows binaries since I think you're on Windows. I do see the same as you when using 2.2. This does actually make sense because there were some fixups in this area just before the release of 2.3. When I say I ...

I can't reproduce this at the moment - what version of z88dk are you using?

Sorry that's my fault, try this fudge block: // SDCC exporting fudge to handle the double export of library functions #ifdef __SDCC static void fudge_export(void) { __asm PUBLIC fputc_cons_native PUBLIC _fputc_cons_native PUBLIC fgetc_cons PUBLIC _fgetc_cons defc fputc_cons_native = _fputc_cons_nati...

Okay, I've pushed a fix for this so it'll be available in the 20250125 nightly.

Okay, I understand what's gone wrong here - the handler for %f has modified the register holding the format string. I'll fix it up over the weekend and post back when it's pushed. Thanks for the report.