I'd like to eventually move my 6502 computer from stripboard to PCB. Can
anyone recommend any Windows software for inputting the schematic and
turning it into a PCB layout?


for schematics, i have tried OrCAD, ExpressSCH, and Eagle CAD. all 3
allow you to convert your schematics to PCB layout ...

> You have to add the jumper yourself to the schematics for the moment.

okay. thank you for clearing up the confusion.

take care,

Aaron
--
{ go NorCal, go SoCal, go California! }

hello Friends:

this is not a critical question, only for my general knowledge.
i like knowing a bit more about the components that i work with.

who originally designed the ULN2003 , ULN2803
and related devices?

from ChipDir, i know that these companies use the ULN chip prefix:
Allegro, Motorola ...

thank you fellows for your help with this. i sincerely appreciate your
help. the answers were very illuminating. thank you.

btw, i used to live in San Mateo, CA before i came to Pune.

GO California, both NorCal and SoCal!
God bless America!

thank you fellows for your help with this. i sincerely appreciate it.

> The PNG is now available.
> What was missing is a simple jumper to GND. The explanation: A jumper
> must be placed to make things work. For future use the jumper can be
> removed and the ICs can be operated by other hardware ...

hello Ruud:

>> i would like to review the circuit schematics of the Elektor 6502
>> CPU card that was published in Dec 1983, iirc.
>
> http://www.baltissen.org/newhtm/elektuur.htm
>
> Otherwise send me a PM.

i checked on the above page and the Elektor 6502 CPU card
that was published in Dec 1983 ...

hello:

i currently own an Elektor Electronics Junior Computer. i am now interested in designing my own 6502 or 65C02 based computer. for this, i would like to review the circuit schematics of the Elektor 6502 CPU card that was published in Dec 1983, iirc.

for those who don't know, Elektor ...

i would like to thank SmilingPhoenix and GarthWilson for their feedback.

here is a reference to an article on 6502 Read/Write Timing that you may
find interesting. note the circuit for extending Data Write Hold Timing. also,
the information on Read Timing is useful.

Nuts and Volts
http://www ...

i was designing a new 6502 system in which the CPU's data bus is directly
connected to a 74LS245 data bus buffer. the buffered data bus is then
distributed to the rest of the system from the 74LS245.

the following signals have to be generated:
- RD\
an active low signal that will be connected to a ...