ATT 6300 MEMORY UPGRADE

[Mark A. Hampson]

The following are the switch settings fopr an AT&T 6300 with ROM version 1.43.

The Memory switches that you have asked for are not changed from 1.21 to 1.43:

On DIP Switch 0 at 7T:
1-3	system memory
4	64Kx1 or 256Kx1 DRAMS on motherboard
5	numeric Data processor, Intel 8087
6	Serial Comm controller 8250/Z8530
7	Not used
8	Bank 1 occupied/not occupied

System		Location				sw1	sw2	sw3	sw4	sw8
640K		256K Motherboard +
			384K Expansion Borad	off	on	off	on	off

640K		512K Motherboard 
				Bank 0 +
			128K Motherboard
				Bank 1				off	on	on	off	off

640K		128K Motherboard
				Bank 0 +
			512K Motherboard
				Bank 1				off	on	off	off	off

Hope this helps:

-- 
Mark A. Hampson                                     WPI Mechanical Engineering
Internet: mhampson at wpi.wpi.edu                       Worcester, MA  01609  USA
                                                                (508) 831-5498
              70% of all code is idiot proofing