sign              460 src/exec.c         WORD sign = sys->cpu->gr[r] & 0x8000;
sign              469 src/exec.c         sys->cpu->gr[r] = sign | (sys->cpu->gr[r] & 0x7FFF);
sign              475 src/exec.c         if(sign > 0x0) {
sign              489 src/exec.c         WORD sign = sys->cpu->gr[r] & 0x8000;
sign              497 src/exec.c             if(sign > 0) {
sign              501 src/exec.c         sys->cpu->gr[r] = sign | sys->cpu->gr[r];
sign              507 src/exec.c         if(sign > 0x0) {