Epson EL 4S/33+

System Memory Map

 

 

System l/O Address Map

 

000FFFFFFh

 

 

 

 

 

 

 

 

 

 

 

 

 

 

System BIOS ROM: 64KB

 

 

 

 

 

 

 

 

 

 

Dupliated from 0F0000h

 

 

 

 

000FF0000h

 

 

 

 

 

 

 

Reserved for system board: 64KB

 

 

 

 

 

 

 

 

 

 

Duplicated from

0E0000h

 

 

 

 

000FE0000h

 

 

 

16MB (Maximum

 

 

 

 

 

 

 

 

 

 

 

Extended memory

system memory)

 

 

00100000h

 

 

 

1MB

 

System BlOS ROM: 64KB

 

 

 

 

 

 

 

Default Shadow RAM duplicated at FF0000h

 

 

 

 

000F0000h

 

 

 

 

 

 

 

Unused or l/O expansion ROM 160KB

 

 

 

 

 

 

 

 

 

 

Reserved for ROM on I/O adapters

 

 

 

 

000C8000h

 

 

 

 

 

 

 

 

VGA BlOS ROM: 32KB

 

 

 

 

000C0000h

Default shadow RAM

 

 

 

 

 

VGA text

 

 

 

 

 

 

(color): 32KB

 

 

 

 

 

Unused or VGA text

 

 

 

 

 

(monochrome):

32KB

 

 

 

 

Video memory: 64KB

Reserved for graphics display buffer

000A0000h

 

640KB

 

12/93

Epson EL 4S/33+ - 7