PERROR
#define BIT_SET (ppb_rstr(ppbus)&PERROR)
if (do_1284_wait(bus, nACK | PERROR | SELECT | nFAULT,
PERROR | SELECT | nFAULT)) {
if (do_1284_wait(bus, nACK | SELECT | PERROR | nBUSY,
nACK | SELECT | PERROR | nBUSY)) {
#define AckDataReq PERROR
#define nAckReverse PERROR
status->paper_end = r & PERROR;