B Specifications; Cpu And Memory; Controllers; Interfaces - Epson Equity I User Manual

CPU and Memory

Main memory
R O M

Controllers

Video/Graphic
Disk
D M A
Interrupt
Control/Timer
Printer I/O
Serial I/O

Interfaces

Serial
Printer
Option slots
Speaker
Appendix B
Specifications
8088 microprocessor, 4.77 MHz clockrate
256k or 512k; expandable to 640k
16k
IBM compatible monochrome and color/graph-
ics controller
Double-density floppy disk controller
Programmable DMA controller with 4 chan-
nels-two main systems (one for refreshing and
one for floppy disk controller), two available for
user peripherals
Programmable interrupt controllers, 8 interrupt
levels
One programmable interrupt timer
Programmable parallel interface
Multi-protocol serial controller
RS-232C, programmable, asynchronous, DB-25
male connector
Standard 8-bit parallel, DB-25 female connector
Three (one used by video card)
Internal, controlled by counter/ timer
B-3