Sharp PC-1360 find

[isidroco]

1010 FOR I=1 TO 4000
1020 REM function test here
1030 NEXT I
1040 BEEP 1: PRINT "FIN"

Takes 5 seconds in my Sharp PC-E500
Takes 78 seconds in my Sharp PC-1500A, although my pc-1500a TIME always give 0, so it may not be working properly.