Author Archives: andy
Acorn Atom Reworked
Acorn Atom Replica, Acorn Atom Copy. Hi everyone, I’ve been working on a replica Acorn Atom on and off over a year now and finally have a working prototype I’m happy with. I’ve had a lot of issues with the video out. I just wanted a black and white output, the same as the original […]
Commodore 64 SID tester
Quickly finding out if all three voices on the SID chip actually work is surprisingly difficult. I’ve spent a long time searching the net for a sensible solution with little luck. I’ve found some, but none I’m completely happy with. The one’s I’ve tried seen to blank the screen and not show what’s going on […]
Commodore 16 & Plus 4 8501 to 6510 CPU conversion
C16/+4 8501 to 6510 CPU conversion I have made it possible to convert the unreliable 8501 processor fitted to the Commodore 16 and Plus 4 to the more reliable, cheaper and widely available 6510, as fitted to the Commodore 64. The conversion is very simple for the C16, just plug the small circuit board containing […]
Commodore 64 6569 to 8565 PAL
This conversion should also work for the NTSC 6567 to 8562. The 6569/6567 and 8565/8562 are almost pin for pin compatible. The only difference being the 6569 has 12v on pin 13 and the 8565 has 5v on pin 13. ASSY No. 250407 To get rid of the 12v supply to pin 13, remove […]
Commodore Plus 4 power connector to C64 version
The Plus 4’s power connector is a square version of the C64’s and is annoying. It’s more convenient to use a Vic 20 or C64 PSU as they are compatible and more readily available. Here’s how to make the necessary modification. First buy a PCB mountable 7 pin DIN connector and cut the two pins […]
Vic 20 Replace BASIC and Kernal ROM’s with 27128 EPROM
Vic 20 Replace BASIC and Kernal ROM’s with 27128 EPROM I had a Vic 20 with a faulty BASIC ROM and thought it would be nice to combine the BASIC and Kernal ROM’s into one. This gives you the ability to modify the standard ROM’s. The conversion is pretty simple. The only issues are the two […]
Commodore 64 Game disks 38 to 42
I have a large collection of Commodore 64 software which has been in my loft since the 80’s. I assumed all the disks would be corrupt due to their age and temperature changes. Nevertheless I decided to buy a disk drive from eBay and try to back them up. To my surprise most the them […]
Commodore 64 Game disks 31 to 37
I have a large collection of Commodore 64 software which has been in my loft since the 80’s. I assumed all the disks would be corrupt due to their age and temperature changes. Nevertheless I decided to buy a disk drive from eBay and try to back them up. To my surprise most the them […]
Commodore 64 Game Disks 21 to 30
I have a large collection of Commodore 64 software which has been in my loft since the 80’s. I assumed all the disks would be corrupt due to their age and temperature changes. Nevertheless I decided to buy a disk drive from eBay and try to back them up. To my surprise most the them […]
Commodore 64 Game Disks 11 to 20
I have a large collection of Commodore 64 software which has been in my loft since the 80’s. I assumed all the disks would be corrupt due to their age and temperature changes. Nevertheless I decided to buy a disk drive from eBay and try to back them up. To my surprise most the them […]