Re: CHIP-8/C and VIPER
- Well now you've gone and done it : )
I just did some digging around to see if I could come up with my
VIP3301 terminal & power supply but they are in storage.
They are only about 8 blocks away and put there 2 months ago so I know
they are safe and sound. I'm in mid house renovation so everything
fragile except for a Kim-1 and my STG ELF2K are safely stored away.
I'll try and dig out the power supply and post a pin out. As I recall,
the power supply is a 5 pin "din" type plug and as Sbirdasn mentioned
probably less than an amp. I might even have a PDF somewhere of that
I've also got a Model VP611 terminal which is ASCII with a number pad
on the right. It's absolutely mint and probably never used but I have
no documentation on it and it appears to be powered through a 20 pin
port on the back. Any info on this would be more than welcome. I'd
like to hook this to one of my Elfs some day.
--- In firstname.lastname@example.org, "sbirdasn" <sbirdasn@...> wrote:
> --- In email@example.com, RalphW <rwhyre@> wrote:
> > Just curious, I hafe a couple of VIP3301 terminals, that I'm
> > cannibalizing to
> > get a couple of working 1802s and 1862? (hopefully) chips. Not sure
> where I
> > can
> > find a service manual or schematic for it, and I don't have the
> > power supplies
> > for them.
> > - Ralph
> Yikes! I'm with the next post, don't cannibalize that VP3301 if you
> don't have too. The terminals are actually based on the VIS
> CDP1869/1870 chipset for video generation. They are scarce as hens
> teeth to find. The VIS chipset is a totally different animal from the
> There is a scanned manual for the VP3301 terminal on the web if you
> look far enough. I've seen it before.
> Even then, it wouldn't be too hard to figure out if the needed supply
> is DC or AC, and then to take an educated guess on the voltage/current
> requirements. I would be surprised if it was more than 1 amp total.
> Just do a bit of reverse engineering to see if there is a bridge
> rectifier, and if there are regulators on the main board, then that
> would give you a pretty good idea of the voltage requirements. The
> regulators in those days would be linear, and need about 3 volts
> headroom. So that wouldn't be too hard to figure out the basic power
> needs for the VP3301.
> Good luck on your 1802 computing.