Yeah, let's paste the final version:
...
With this function on your main loop, you read keyboard 
.
I'm happy to see how you guys are starting to do useful stuff in MSX-C. This is going to be helpful for everybody else who reads this thread in the future. :-)
MSX-C does support two -const types when running in default mode: intconst and charconst. They work as expected: the first one defines a 16-bit constant value, the second one an 8-bit value
Another discovery, thans for the info.
I'm happy to see how you guys are starting to do useful stuff in MSX-C. This is going to be helpful for everybody else who reads this thread in the future. :-)
This is the idea, try to collect as many info as possible 
. When a lot of info is gathered, we could talk to admins in order to write it to Wiki. By the moment, let's go for next question
Question: Is there any way in MSX-C to load images? I've read all functions included in glib.h that includes functions as cpym2v, cpyv2m, cpyv2v but I miss cpyd2v (disk to VRAM). On the other hand, I can see functions to handle palettes as setplt(pal, grbdat), but I don't understand them since I'm used to read a palette from .pl5 file in Basic. I suposse that in C the palette is defined in other way (perhaps an array with RGB values?)
Basically, what's the equivalent in C to this code in BASIC?
10 BLOAD "palette.pl5",S 20 COLOR=RESTORE 30 BLOAD "image.sc5",S
In 3 steps: Load palette, set that palette as active and load image in active screen.
Thanks
Any implementation will read data into a buffer first before writing it to the VRAM, so it’s a good approach. Although I would use a bigger buffer than 128 bytes . So, I would use the C standard library functions to load part of the image into a buffer, then use ldirmv to copy the buffer to VRAM, and repeat until it’s fully loaded.
Any implementation will read data into a buffer first before writing it to the VRAM, so it’s a good approach. Although I would use a bigger buffer than 128 bytes . So, I would use the C standard library functions to load part of the image into a buffer, then use ldirmv to copy the buffer to VRAM, and repeat until it’s fully loaded.
You are right, I've read how BLOAD works and it uses a buffer too, it seems it's not possible to transfer directly from disk to VRAM (right, VDP can't access disk!). Your solution looks nice, with a buffer around 1Kb it could get a good performance. Let's try it.
Thanks
P.D.: ignore BLOAD request, it's not a good solution since BASIC is slower than C 
Right, here goes my first try:
#include<stdio.h>
#include<glib.h>
#define PAGE0 0x0000
#define PAGE1 0x4000
#define PAGE2 0x8000
#define PAGE3 0xC000
#define SCREEN5 (TINY)5
#define SCREEN0 (TINY)0
loadimg() {
FILE *fp;
char *buf;
int size=128;
int count=1;
int i;
int vrami=PAGE0;
fp->bufsiz=128;
fp=fopen("arthur4.pl5","r");
for(i=0; i<213; i++) {
fread(buf,size,count,fp);
ldirvm(vrami,buf,size);
vrami = vrami+128;
printf("%c , %d\n",fp->ptr, fp->count);
}
fclose(fp);
}
main() {
screen(SCREEN5);
loadimg();
screen(SCREEN0);
}
And I obtain this:
Something is wrong ^_^!
Solved, we must read it in rb mode:
fp=fopen("arthur4.pl5","rb");
Now it works, althought palette is not correct by the moment