Jump to content
Electronics-Lab.com Community

What will it do if I...?


LegendBreath

Recommended Posts


Hi LegendBreath

this takes me back a bit.. but according to websearch

Yes, they are identical.  The 6507 package was created strictly
to save space on the PCB, in those days it did not make sense
to create a new die and mask for such an "improvement" since this
was much more expensive than the package design.  The 6507 in
a 2600 should react the same way to undocumented opcodes as the
6502 in a C64.

Does that help?

Ed

Link to comment
Share on other sites

Hi LegendBreath

I'm afraid my Vic has gently rusted out in the garage, maybe there's some way of recycling it as a doorstop, ah! technology moves on, in an odd sort of way I'd be happier playing with my Vic, PET, Dragon, Atari or Sinclair (Yes, i've still got them all) than Visual Studio .NET but I have to eat

Ed

Link to comment
Share on other sites

The C64 is using a 6510  :P

One of the best places (I think) for Commodore stuff is: http://www.funet.fi/pub/cbm/

Miss my VIc-20 - it has alzhimers  :'( - a known problem in old VIC's...

But all my C64, spectrum, lambda, amiga, spectra video, sort, amstrad, new brain..... still works  8)

Link to comment
Share on other sites


The C64 is using a 6510  :P

One of the best places (I think) for Commodore stuff is: http://www.funet.fi/pub/cbm/

Miss my VIc-20 - it has alzhimers  :'( - a known problem in old VIC's...

But all my C64, spectrum, lambda, amiga, spectra video, sort, amstrad, new brain..... still works  8)


Well, do you know which chip the VIC-20 use?
Link to comment
Share on other sites

Here are the schematics http://www.funet.fi/pub/cbm/schematics/computers/vic20/index.html

there is a CPU running at 2 MHz you can out stright in (can't remember the name), you don't need to change the x-tal (6502DX2 ??  8))

when the VIC was hot you could buy a 4 MHz upgrade for it !!!, the problem with just changing the x-tal is your timing gets screwed, the timer and disk drive woun't work any more

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
  • Create New...