if somebody is hunting for datasheets I'd recommend an easy to use multisearcher I mounted on personal my webpage: www.rafalszyja.republika.pl

newer releases are also avaiable for mac.
some time ago I made few library part from 65xx series (8580/6581 for example) but accidentally I deleted it and when I found out it was too late to recover files from hdd.

eagle (www.cadsoftusa.com - if i remeber right)

hmm... but why there is no cans of them on the net?

hmm too bad there is no datasheets for 85xx chips ;/

well.. I havbe read a text about 6502 history and one of engineers said he was running 6502s meant to be used as 1MHz at (incerdilby at around 1975) 10MHz - maybe someone can comment this?

by the way - is 8500 just equal to 6510 except 6510 is NMOS and 8500 is HMOS-II ?

;
; fast textmode putpixel
; (made for c64 but can be used anywhere)
;
;
; it's real fast but takes 50 bytes of zeropage
; for 25 columns screen
; -> good for demos ;-)
;
;
; how does it work:
; on zeropage there are 2byte columns' pointers
; and there is only Y index reg used to determine
; row ...

buy a (broken?) old breadbin on ebay for up to few bucks

it;s not the same cpu , it has got rid of decimal mode and has got instructions for gfx and sound but I'm not keen on it , see http://nesdev.parodius.com/

I use eagle 4.13 but _c+r+a+c+k+e+d_ to pro version... basic free version is unfortunately too limited and I'm poor so I can't afford any better licence ;(

anyway there is also a diary I made for this one , thanks for effering help:

late nov 2004 - I bought old (1984), broken and dirty C64 :) , case is broken (there is no
plastic that keeps rear part of the case together) , one key is missing and
it's "socket" is broken - that means that no kay ...

offtopic
heheh... przeczytalem to kiedys na Twojej stronie internetowej gdzie znalazles Polke w holandii?

I see then don't rely on me I'm too lazy to write such a thing

hello. I'd like to repair my old breadbox. yesterday I've got a 64c '87 made in germany which has got exchangeable chips with that broken one so I started investigating it further...

here is list what I tested , what I see and what I suppose

machine is dead after powerup (just black screen ...