can't convert a Rabbit Instruction

I have a program I am converting from a Rabbit Dynamic C to Keil Arm C and cant get this one intruction to work.At first it only had a routine warning about implicit function but then I tried to add a function template at the start and cant seem to get this to work with out the error (at the bottom below). Its a simple routine that puts out strings in rom to a svga parallel port depending on the pointer when invoked. I tried the knowledgebase suggestions and they don't make it better. Any help would be appreciated.

Thanks and happy Friday.

David

//function
void vmsgo(char *);
//actual
/* Send out 160 ASCII characters to svga module*
The x & y are preset */
vmsgo(char *mp)
{
char *msgp;
char a;
char c;
c = 0;
msgp = mp;
loop:
a= msgp[c];
if (a == 0)
{
goto endd; //return;
}
else
{
vgaout(a); //send directly to cygnal
c++;
if (c == 255) goto endd; //safety for illegal messages in debug
goto loop;
}
endd:
}

//user
vmsgo(&msgb); //L=


//msessage
const char msgb[]="L=";



error in Keil is:

8500.C(1075): error: #167: argument of type "const char (*)[3]" is incompatible with parameter of type "char *"