i heard that 87 serie has eprom internally

Correct,

is this eprom writen by an eprom writer

No, a device which only programs the 27 series eproms, can't program 87 series micros.

87 series programming is different from 27 series, hence needs a separate (special) programmer.

Most of the universal programmers are capable to program both 87 and 27 types.

IA