ATL ACR ARR FAILED TO MEET CROSSING RESTRICTIONS ON HONIE STAR DISTRACTED BY REPEATED ATTEMPTS TO ENTER CORRECT INFO INTO FMS.

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WHILE ARRIVING ON HONIE ARR; WAS GIVEN VERY LATE DSCNT TO 14000 FT. THEN WAS SLOWED TO 280 KTS; MAKING XING RESTR AT HONIE IMPOSSIBLE. MISSED XING BY AT LEAST 5 MI. THEN WAS GIVEN NEW DSCNT TO 12000 FT. SET UP NEW CRUISE ALT IN FMS AND PLANNED FOR THE HONIE VNAV ARR WITH A RWY 27L ILS. VERY CLOSE TO FOGOG; ATC GAVE US 11000 FT WITH A RESTR TO STILL CROSS FOGOG AT 11000 FT AND THEN CONTINUE DSCNT ALONG HONIE ARR. PLUGGED IN A NEW CRUISE ALT AND STARTED DSCNT TO 11000 FT. HAD 4000 FT IN THE ALT WINDOW AS THIS WAS THE FINAL ALT ALONG THE ARR. TRIED TO PLUG IN 210/110 AT FOGOG. FMS WOULD NOT ACCEPT THIS. I SAW TOP OF DSCNT WAS PRIOR TO FOGOG. TRIED SEVERAL TIMES; SEEMS I THOUGHT I HAD MADE A TYPO. ACFT STARTED A DSCNT APPROX 2 MI PRIOR TO FOGOG. AT 10600 FT; ATC MADE STRONG SUGGESTION WE WERE NOT AT FOGOG AND TO RETURN TO 11000 FT. CLICKED OFF AUTOPLT; PULLED BACK AND PUSHED THROTTLES UP; RETURNED TO 11000 FT. I SIMULTANEOUSLY HAD ATC YELLING AT US; TCAS GOING OFF; AUTOPLT WARNING; AND FO DEBATING ATC. CALLED ATC ON THE GND; HAD A VERY GOOD CONVERSATION WITH SEVERAL CTLRS. ATC WAS GOOD ENOUGH TO TELL ME THERE HAD NOT BEEN A LOSS OF SEPARATION. IT SEEMS ON THE SURFACE THAT MAKING THE XING RESTR IS SIMPLE ENOUGH. HOWEVER; MAKING THE FMS MAKE THE CHANGE THAT CLOSE IN TO THE FIX AND THEN FLY IN VNAV FOR THE REST OF THE ARR IS; WELL; VERY CHALLENGING TO SAY THE VERY LEAST. IT SEEMS EVEN THOUGH I NOTICED THE TOP OF DSCNT WAS PRIOR TO FOGOG; I FIGURED I COULD GET THE RESTR TYPED INTO THE FMS IN TIME. WHEN THE FMS DIDN'T ACCEPT MY INPUTS; I GOT OVERLY FOCUSED ON WHAT I MIGHT BE DOING WRONG THAT IT WOULDN'T ACCEPT MY INPUT. IN THE FUTURE; I RATHER IMAGINE I'M GOING TO FLY ARRS IN THE INDICATED AIRSPD MODE.