Xi8088 Version 2.0: Difference between revisions
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== Proposed Improvements == | == Proposed Improvements == | ||
Sometimes the non-turbo clock fails to properly initialize and during this time provides an unstable signal. The OSC output at the bus shows approximately 20 Mhz during this time. The proposed improvement to this circuit is seen below. I will test it further and introduce this change in the next revision of the board. | |||
[[File:ImprovedNonTurboClockCircuit2.jpg|640px]] | [[File:ImprovedNonTurboClockCircuit2.jpg|640px]] | ||
Revision as of 04:38, 18 June 2021
Introduction
Xi 8088 IBM PC/XT compatible processor board
Features
- ISA board form factor
- Support of PS/2 keyboard and mouse
- Built-in real time clock with NVRAM
Board Layout
Click on any chip for more information
Proposed Improvements
Sometimes the non-turbo clock fails to properly initialize and during this time provides an unstable signal. The OSC output at the bus shows approximately 20 Mhz during this time. The proposed improvement to this circuit is seen below. I will test it further and introduce this change in the next revision of the board.
