Epson Equity II - Manual (Page 57)

Appendix A
Equity II Specifications
CPU and Memory
16-Bit CPU
Math coprocessor
Main memory
ROM
Controllers
Clock/Calendar/
Display
Floppy disk
Power
DMA
Interrupt
NEC V30 microprocessor (8086-compati-
ble), 4.77 or 7.16 MHz clockrate, operator-
selectable execution speed and wait states
20-bit address and 16-bit data bus
8087 support (optional with 8086 CPU),
operates at 4.77 MHz clockrate only
640KB RAM standard
16KB
Real-time clock, calendar, and 50-byte
CMOS RAM for configuration with
battery backup
Combination video display modes: IBM
PC-compatible monochrome text/Hercu-
les graphics (720 X 348); IBM PC-compati-
ble RGB color/graphics (640 X 200) or
composite video; controller on main sys-
tem board
Supports up to two drives, drives available
in one of two formats (double-density
360KB or high-density 1.2MB), controller
on main system board
Power-on by switch or timer, power-off by
switch or software
Programmable DMA controller with 3
channels: one for floppy disk controller;
two available for user peripherals
Programmable interrupt controllers, 8
interrupt levels
A-1