haglebu
Experienced Member
Based on research here in the forum, I upgraded my IBM 5162 XT/286 to 8 MHz as follows:
1. crystal Y1: 12 MHz to 16 MHz
2. BIOS: AMI 1989 / WINBOND W27E257-12
3. RAM 0-512: 15ns to 10 ns
4. RAM 512-640: switched off, as I don't have 10 ns chips; but it will be upgraded.
5. NPU: not yet installed
I only switched ON the converted 5162 for max. 1 minute and tested it with CHECKIT: The frequency changed from 6 to 8 MHz without further action.
Now my question: Are further adjustments necessary for continuous operation?
1. crystal Y1: 12 MHz to 16 MHz
2. BIOS: AMI 1989 / WINBOND W27E257-12
3. RAM 0-512: 15ns to 10 ns
4. RAM 512-640: switched off, as I don't have 10 ns chips; but it will be upgraded.
5. NPU: not yet installed
I only switched ON the converted 5162 for max. 1 minute and tested it with CHECKIT: The frequency changed from 6 to 8 MHz without further action.
Now my question: Are further adjustments necessary for continuous operation?