In The I239X Emulation Mode - Epson EPL-6100 Reference Manual

In the I239X Emulation Mode

The available symbol sets in the I239X mode are Pc437, Pc850,
Pc858, Pc860, Pc863, and Pc865. See "In the ESC/P2 or FX Modes"
on page 132.
The available fonts are EPSON Sans Serif, Courier SWC, EPSON
Prestige, EPSON Gothic, EPSON Presentor, EPSON Orator, and
EPSON Script.
134 Symbol Sets