VTech Write It Right Computer Dokumentacja Pobierz pdf (Strona 72)

Switch

Box

#2

(SW2)

Switch

SW2

is used for setting the

I/O

Port address for the

expanded memory installed

in

the computer.

If

you

have up to

one megabyte of expanded memory, the settings are easy.

The position of switches

1,

2 and 3 on

SW2

determine the

1/

o port address of the expanded memory.

I/O

Port Address

ON

ON

ON ON

~~~

~~~

~~~

~~~

208h 218h

258h

268h

ON

ON

ON

ON

~~~

~~~

~~~

~~~

2A8h

2B8h 2E8h Expanded Memory

disabled

71

1 2 ... 67 68 69 70 71 72 73 74 75 76 77 ... 94 95

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