/* Awrite_byte.c 1.1 86/07/20 */ #include "../tahoealign/align.h" write_byte (infop,byte, where) process_info *infop; long byte; struct oprnd *where; /* /* Put the 'byte' at the given address in /* tahoe's memory. /* /* 1. Only the least significant byte is written. /* /**************************************************/ { register struct operand_des *look_at; look_at = &Table[opCODE].operand[last_operand]; if (! (look_at->add_modes & NOVF)) if (byte > 0x7f || byte < -0x80) overflow_1; if (!(where->mode & W)) exception(infop, ILL_ADDRMOD); switch (where->mode & ADDFIELD) /* Mask out R/W bits */ { case Add: put_byte(infop, byte, where->address); break; case Dir: Replace (infop, where->reg_number, byte); break; case SPmode: where->mode = where->mode & ~SPmode | Add; write_longword (infop, byte, where); break; default: printf("Unknown destination in write_byte (alignment code)\n"); }; }