Epson Y16499100301 User Manual

Appendix E

16-bit CPU

Main memory

ROM

 V30 microprocessor; 4.77 or 10

MHz clockrate, switch-selectable

20-bit address and 16-bit data bus

640KB RAM (with parity) on main board

16KB

Floppy disk

Supports up to two drives; two 3 
drives or one 3 

 drive and one

external 5   -inch drive

Hard disk

Supports one 20MB hard disk; supplied in

top option slot

Parallel

Serial

Standard 8-bit parallel, DB-25S female
connector for parallel printer or external

5   -inch diskette drive

RS-232C, programmable, asynchronous,

DB-9P male connector

C R T

Color monitor port, DB-9P connector

Option slots

Two proprietary 8-bit input/output slots;

one for hard disk drive, one for optional

modem card