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HP Portable Plus ... until 2039?
05-09-2014, 08:02 PM
Post: #4
RE: HP Portable Plus ... until 2039?
Oh - if you're in need of higher speed, we found that replacing the Harris 80C86 in the Portable with an NEC V30 series CPU combined with a minor cut and jumper change to run it at 8MHz instead of 5.333MHz roughly doubled the speed of the Portable without noticeable decrease in battery life. It's a far simpler mod than the memory expansion I mentioned (which involves removing all 34 8kx8 SRAMs and replacing them with 16 32kx8 SRAMs, among other things).
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RE: HP Portable Plus ... until 2039? - Jim Horn - 05-09-2014 08:02 PM



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