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About ibmapc

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Date of Birth
May 26, 1963 (54)
About ibmapc
Location:
Albany, OR USA
Interests:
IBM 5155 Portable

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692
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Today 08:05 PM
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April 4th, 2010
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HIMEMV2 or equivillent PROM

by ibmapc on August 23rd, 2017 at 09:10 PM
Quote Originally Posted by ibmapc View Post
If your not familiar with the HIGHMEMV2, see the folowing 1megXT.txt.It is a chip that replaces the rom in socket u44 on the IBM 5160 XT Motherboard to address memory up to 1 meg. I did the mod for 640KB on the motherboard about 25 years ago. So I have 256k chips in banks 0 and 1. I have enough 256k chips that I pulled from another board to fill the other two banks. I realize that the added memory will only give me about 64k of Contiguous base memory, but I believe there is a good

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