last week I received 2 prototype boards called “64 Tuning Board”. This is a design of Matthias that he showed on Forum64.de. This board is designed to use an Arduino or teensy and has several other “expansions” like the option to use sram over dram which does not show the VSP bug.
Last meeting of the Dutch Commodore Club (near Utrecht) we run out of PLA chips. Searching the web I came across the website called hackup that used an existing opensource design to create a drop in replacement.
So I decided that I should build some, check them and use them to fix some C64 at the club (I normally can be found next to the repair corner, helping repairing).
This version of XCPLA is for the C64, but with other HDL code it should also work in other systems.
This weekend it will be Sinclair take over, so I will bring my zx81 to try to fix them.
Last night I finished building the release version of joyswap. This version will also swap the mouse and paddles.
Last week I received 10 pieces of my revision 2 Joyswap PCB’s. I started to build them all, but soon found out I only had 2 40 pin sockets, so I currently only finished 2 of them. This revision also swaps the control lines of the 4066 chip that controls the mouse and paddles. So now it will not only swap the (digital) joysticks but also the paddles and mouse from port. When build in, pressing the restore key for about 3 seconds will swap the ports.
These ports will be reset to their normal position when a reset of the C64 is detected. holding the restore key for 5 seconds will swap the kernal (if kernal option is used) and resets the C64. holding it for more than 10 seconds, the kernal state is stored in the eeprom of the attiny for next power up.
JoySwap is a internal joystick switch that swaps the joystick ports at a (3 sec.) press on the restore button. Next to the swapping of the joystick ports it can also switch between two kernal roms and store the selected rom for next power up.