CS/A65 Bus terminators
This board implements bus terminators for the CS/A bus. As has been discussed in the
6502.org forum newer technology
uses stronger drivers and faster transitions between signal levels, which increase the
level of jitter on the bus due to reflections.
Also I am using more and more boards, and unfortunately the board design and layout
was not done with reflections and bus design in mind. So I decided to implement
this bus terminator board.
Status: untested
Notes |
This is an untested prototype, I have only added a floppy-style power supply plug
and ground- and VCC-planes.
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Status: working
Notes |
I found that when I used all resistors, my power protection mechanism pulled reset due to
low voltage condition... so currently I am running with a 330/560 Ohm resistor pair on
RN9/RN10 respectively. This removes the visible jitter on the screen (horizontally about one
pixel, when loading a file from a floppy with the PETIO IEEE488 interface).
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