6502.org

Hi Tor, The black background is easier for me, but not for anyone. When the diagram becomes final, the black background will be changed to white background.
Bryan

If you change the background to white, you may need to change other colours to darker shades.

Hi Ed, Do you like both image 2 and image 4? Which size of image 2 or image 4 do you prefer? Well, your retina changes and deteriorates slowly each year like everyone does the same. I am in my 40s while I am retired. I have free time to do 6502 project all the day. All right. I will try to reduce some labels. Do you want to omit "IN" and "OUT" like "A0 IN" and "A0 OUT"? It is not a good idea to have input and output combined in the left side and right side as you recommended input is in the left side and output is in the right side. Ok. Do two grounds need to be little widened about 5 pixels instead of 1 pixel in Nor Transistors2.png? Do you prefer the left transistor is positioned in the center or top in the Nor-And Transistors2.png? I am surprised as you prefer yellow or orange wires like described in visual 6502? Do you want to keep blue transistor for pass gates and tri-states?

I thank you for your feedback. I will make some changes as soon as possible. Is 6502 blueprint available to the publisher yet? If not, can you guess when? Two or five years?

Bryan

I keep few colors in my table. I continue to draw the schematic in black background. It helps to keep my eyes getting tired at looking white background. After the schematic becomes final, it can be reprogrammed by Visual C++ to switch all the colors to white and dark colors.

What are you refering darker shades?

Bryan

(I'm going on vacation soon so won't necessarily be quick with a reply)

I think your diagram 4 is better than 2, perhaps because the transistors are relatively smaller and it looks less cluttered.

I've no special preference for yellow pass transistors, but using blue when you have blue wires and other transistors have different colours is confusing. I'm quite happy with a conventional monochrome diagram - the thing is to be consistent.

I suspect pull down trees should be the same height, and the transistors evently spaced. The idea is to have minimal surprise in any of your layout - what the eye should be picking out is the circuit, not the choices made in drawing it.

About your cross-coupled inverters: you should consider making a loop instead. Both inverters on the bottom half, going from left to right, with a feedback loop going over the top. I assume you've looked carefully at Balazs' schematic?

About the colour choices: yellow and green are prominent on a black background but will not show up well on a white background.

Cheers
Ed

I hope you have a wonderful time on your vacation soon.
I will choose to paint blue on pass gate transistors and yellow or orange on wires. I agreed. I like loop better than cross-coupled. If some wires need cross-coupled, I will find another way to put wires in opposite position. Of course, I already have Balazs' schematic in my file for several years. His diagram does not look neat. That is why I decided to group some transistors in white, grey, and dark grey borders. I agreed. If white background is chosen by anyone, monochrome is best option.

Bryan