IBM 6649, 6578, 6579, 6269, 6059, 6058, 6569 A20 Processor Speed Settings, A20 Diskette Write Access

Jumper	Setting	Description
CMOS Reset	2-3	CMOS Reset/Flash Recovery Mode
	1-2 (D)	Normal Mode

Note: The A20 CMOS clear/recovery jumper pins are numbered as follows:

vPin 1 is the nearest to the battery.

vPins 2 and 3 are below pin 1, as seen in the A20 System Board layout.

A20 Processor Speed Settings

Processor speed for Type 6269 computers is fixed and are determined by the processor. There are no settings required.

A20 Diskette Write Access

Diskette Write Enable and Write Protect options are changed in the Setup Configuration. See “Setup Utility program” on page 122.

Chapter 3. Types 6058/6059/6269/6578/6579 147