The GNUH8 v0803 is based on gcc-4.3.1 [released], binutils-2.18.50 [dated 30th July 2008], newlib-1.16.0 [released], gdb-6.8.50 [dated 11th August 2008].

The windows installer is modified to store the e-mail address and the activation code entered by the user during the first installation on the system. For any subsequent installations (of higher tooolchain versions) / re-installation, the installer will display the stored e-mail address and activation code in the "Authentication" dialog box. The user will not have to enter the detail during every installation.

H8/300, 

H8/300L, 

H8/300H,

H8/300H Tiny Series,

H8/S 2XXX,

H8/S 26XX,

H8/SX

3.

The used registers were not pushed on the stack in case of interrupt service routines when optimisation was enabled ('-O2', '-O3' and '-Os'). This problem occurred for toolchain versions v0602 and above.

This problem is now fixed.

In case of H8SX, the following code when compiled without optimisation generated a negative jump instead of a positive one, thereby resulting in a program crash. This happened only when the size of the 'for' loop was exactly 0x80 bytes.

typedef unsigned char uint8;
typedef unsigned short uint16;
typedef unsigned long uint32;

int
main ()
{

uint8 div;
unsigned long peripheral_frequency;
unsigned long brr,baud_bits;
static const uint16 div_vals[] = {1,4,16,64};
baud_bits = 11;
for(div = 0;div < 4;div++){
brr = (peripheral_frequency * 20) / ((uint32)64 * div_vals[div + 1] * baud_bits);
brr += 5;
brr /= 11;
if(brr < 256){
break;
}
}

return 0;
}

This problem is now fixed.    

The assembly instruction "MOV.W #H'1234,R0" generated "Illegal Symbol 'H' for Hex representation (use 0x)" error.

This bug is now fixed. An assembler option '-h-tick-hex' is added to support "H'00" syntax for hexadecimal representation.

The 'strtol' function from optimised libraries not work for H8SX target.                                       

This bug is now fixed.

This bug is now fixed.

In case of Windows XP, for project with many source files, if the length of the linker command exceeded 8192 characters, the linker did not generate the output file.  

This problem is now fixed. The object files are passed to the linker using a separate linker script.         

The following code when compiled for H8300H, H8300HN, H8S, H8SN, H8SX, H8SXN targets with optimisation option '-O1' or above, generates wrong assembly code.

unsigned int ReadWordx86Style(unsigned long lAddr)
{
unsigned char baBuff[2];
baBuff[0x00]=*((unsigned char *)((unsigned int)(lAddr+1)));
baBuff[0x01]=*((unsigned char *)((unsigned int)(lAddr+0)));
return((*(unsigned int *)baBuff));
}

int start(void)
{
unsigned char baBuff[256];
unsigned int wResult;
wResult = ReadWordx86Style((unsigned long)((unsigned int)baBuff));
return(wResult);
}

The '.tinybss' implementation does not work as expected.

The GNUH8 assembler (h8300-elf-as) does not give error if attribute of a section is not specified.

The 'scanf' and 'sscanf' functions of Newlib do not work for H8300HN, H8SN and H8SXN targets when '-mint32' is passed.

In HEW, when optimised libraries are used in C++ projects, the linker generates "undefined references" error for some routines as some of the ANSI C library functions are not implemented in H8 optimised libraries.

Workaround:
The user can add his own implementation of these functions or can provide dummy
implementations depending upon the usage.