btext_drawchar
extern void btext_drawchar(char c);
btext_drawchar(*c++);
btext_drawchar(*c++);
btext_drawchar(hex_asc_hi(v >> 56));
btext_drawchar(hex_asc_lo(v >> 56));
btext_drawchar(hex_asc_hi(v >> 48));
btext_drawchar(hex_asc_lo(v >> 48));
btext_drawchar(hex_asc_hi(v >> 40));
btext_drawchar(hex_asc_lo(v >> 40));
btext_drawchar(hex_asc_hi(v >> 32));
btext_drawchar(hex_asc_lo(v >> 32));
btext_drawchar(hex_asc_hi(v >> 24));
btext_drawchar(hex_asc_lo(v >> 24));
btext_drawchar(hex_asc_hi(v >> 16));
btext_drawchar(hex_asc_lo(v >> 16));
btext_drawchar(hex_asc_hi(v >> 8));
btext_drawchar(hex_asc_lo(v >> 8));
btext_drawchar(hex_asc_hi(v));
btext_drawchar(hex_asc_lo(v));
btext_drawchar(' ');
udbg_putc = btext_drawchar;
btext_drawchar(c);
if (udbg_adb_old_putc == btext_drawchar)
btext_drawchar(on? 0xdb: 0x20);
btext_drawchar('\b');
btext_drawchar(*c++);