Re: VIC-20 "smart" expansion port idea

From: Gerrit Heitsch <gerrit_at_laosinh.s.bawue.de>
Date: Mon, 11 Jan 2016 21:12:34 +0100
Message-ID: <56940CB2.40108@laosinh.s.bawue.de>
On 01/11/2016 08:56 PM, Marko Mäkelä wrote:

>
> So far, nobody seemed to answer my question about Vic-20 cartridges that
> use I/O2 or I/O3. I know only one such cartridge: the tape fastloader
> Vic Rabbit maps 4KiB of ROM there. But is there anything that maps
> hardware to I/O2 or I/O3? Any EPROM burner? Relay controller?  Anything
> done and distributed in a smaller scale by some third party? Or were
> most peripherals for the user port and the IEC bus?

How about that one (VIC-1112):

ftp://www.zimmers.net/pub/cbm/schematics/cartridges/vic20/ieee-488/1110010.png

Uses I/O2

  Gerrit



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