The A2 VidGA is a super handy, wide-support VGA output card for your Apple ][, ][+ and //e computer!
The Apple II’s composite video output is not exactly standard. Some newer monitors don’t like it, and old CRTs can be inconvenient. The A2 VidGA card solves that problem! The A2 VidGA includes a standard VGA output port, but with a twist. With a simple modification (which you can do yourself, or purchase pre-installed) you can separate the VGA port and attach it to the rear panel of your Apple II – no weird adapters to purchase. It’s an all-in-one solution!
Based on the original Apple II VGA project by Mark Aikens and the update by Vince Briel, our version aims to be the most cost-effective pre-assembled version on the market.
USBRetro is an open source controller adapter firmware for converting USB controllers, keyboards, and mice to various retro consoles' native controller protocols.
PCBway community page for an adapter for a Commodore 1541-series disk drive. Makes it possible to add a parallel interface port to the drive for the purposes of disk ripping. Rather than cutting traces and soldering directly to a 6522 chip, it fits in between the chip and its socket. Add some ribbon cable and a DB-15 plug and there you go.
The picture is a helpful reference for how the IC socket and header bars are positioned.
Note that, per the response to my question:
Pins 9 and 10 are connected to pins 18 and 39 of 6522 - CB0 and CA1 (some count it from 1 so it's CB1 and CA2 then). They are needed only when drive is connected with C64 via userport to handshake while sending data. You don't need those for XUM1541/ZoomFloppy.
A collection of cartridges, adapters and replacements for the Commodore C64.