Posted By
orac81
on 2025-03-20
08:51:58
|  VBCC (C compiler) now has plus4/c16 support.
The latest version of VBCC now supports the plus4/c16 as a target. see:
http://www.compilers.de/vbcc.html
Development thread here:
http://forum.6502.org/viewtopic.php?t=6100
My own tests on CONNEX indicate its about twice as fast as cc65, see here.
starting sconnex155, new game, iq7, go:
vbcc/c16:iq7,n,g :mv4,84sec,16489nod (196 node/sec)
cc65/c16:iq7,n,g :mv4,176sec,16489nod (94 node/sec)
(One thing i did in sconnex was use a typedef XINT set as byte, and use that for any int variables that are in the 0-255 range. this is a big speedup for vbcc.) |
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Posted By
Harry Potter
on 2025-03-20
14:33:59
| Re: VBCC (C compiler) now has plus4/c16 support.
I just downloaded it. I see it has 65816 support.  Does it also produce smaller programs than cc65? |
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Posted By
Harry Potter
on 2025-03-20
16:43:50
| Re: VBCC (C compiler) now has plus4/c16 support.
Okay. I started to peruse the docs., and it seems that VBCC is better than cc65, but I think I can still make it a little more optimal by implementing things like CBMSimpleIO to it. Now, I need to find info on extra memory, zp and overlays before I can convert my cc65 projects to VBCC. |
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Posted By
orac81
on 2025-03-21
07:05:12
| Re: VBCC (C compiler) now has plus4/c16 support.
I don't think there is much c16 specific code in the libs at the mo, just whats needed to build C programs. You can link your own asm routines for extensions. code size seems similar to cc65, but using byte ints should lead to smaller/faster code. avoiding certain thing like printf will help nake smaller code. |
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Posted By
Harry Potter
on 2025-03-21
07:27:05
| Re: VBCC (C compiler) now has plus4/c16 support.
If you're the author of VBCC, yesterday, I e-mailed you an offer to help optimize your code. I also want to implement things like CBMSimpleIO to VBCC. And, I'd like to implement things such as cartridge support and support for other alternate memory configs such as C64 programs at $8000 and $C000. Finally, I want to implement things like Fields and PrintTok to VBCC. Are you interested? If you want more information, just ask. |
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Posted By
orac81
on 2025-03-21
14:19:45
| Re: VBCC (C compiler) now has plus4/c16 support.
no, its not mine! Its written by Dr. Volker Barthelmann, see the links in the first post. I think the start address is set in the lib file, i think plus4.lib or c16.lib? for the 64 its c64.lib. he also supplies the compiler sources, but they may not have plus4 lib code yet. but u may find c64.lib source, which should be enough to work it out. |
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Posted By
Harry Potter
on 2025-03-21
18:58:38
| Re: VBCC (C compiler) now has plus4/c16 support.
Sorry, but I did e-mail him. As of yet, I got no response.  |
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Posted By
MMS
on 2025-03-22
14:59:31
 | Re: VBCC (C compiler) now has plus4/c16 support.
Hi, i donwloaded the package but i hardly saw any Lib containing C16 routines, like Stdio or such not to mention the gfx and sound.
So what does the C16 support really means? Or I just missed something important? |
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Posted By
Harry Potter
on 2025-03-22
16:12:17
| Re: VBCC (C compiler) now has plus4/c16 support.
Well...I read that VBCC only has standard lib support for the Plus4/C16--enough to compile the programs. |
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Posted By
MMS
on 2025-03-23
05:24:11
| Re: VBCC (C compiler) now has plus4/c16 support.
OK, thanks I found the 6502 common folder with the libraries. Yeah, they could be good enough for the start. |
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Posted By
orac81
on 2025-03-25
16:35:18
| Re: VBCC (C compiler) now has plus4/c16 support.
Yes the basic stdio console libs are there, simple file handling (fopen etc). They would be very similar to the c64 version, using kernal calls.
For gfx/sfx you have to roll your own. |
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Posted By
Harry Potter
on 2025-03-27
15:25:06
| Re: VBCC (C compiler) now has plus4/c16 support.
I looked again at the docs. They seemed to mention that the compiler is not fully optimized for size--just speed. most of my current works are being optimized for size. I will hold off on using VBCC for now, |
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Posted By
Harry Potter
on 2025-03-27
15:32:25
| Re: VBCC (C compiler) now has plus4/c16 support.
I will hold off on using VBCC for my programs for now, but I want to see if I can help to optimize VBCC's standard libraries. However, the site only contains the source code for only the compiler/linker and target-specific code. Where can I find the library sources? |
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