Description
This product takes a stock 6502 processor and maps its pins to those of a 28-pin 6504 processor.
This allows you to replace a failed 6504 in your retro computing equipment and give it a new lease of life. This includes the Commodore 2040/3040/4040 disk drives.
This product comes either as
- a bare PCB
- a bare PCB plus 6502 socket, pull-up resistors and a choice of pins to best suit your PCB’s socket
In both cases you must supply the 6502, and we recommend you test it before using it as a replacement for the 6504. You must also solder the board together.
If you buy just the bare PCB, you will also need to supply
- 3 pull-up resistors (4K7 ohm is a reasonable value to use)
- a socket for your 6502
- header pins.
Some retro computing equipment used the 6504, a less common variant of the 6502, as its CPU. That includes the Commodore 2040/3040/4040 disk drives. While the 6504 is simply a custom-down version of the massively popular and still available 6502, replacement 6504s are practically impossible to find. Instead, you can use this replacement board – it takes a 6502 and maps the pins to those of a 6504, and can be used as a drop-in replacement for the 6502.
Free shipping within the UK.
If you are in EU, Norway or Switzerland, we recommend you purchase from our ebay listing, as this will avoid you paying customs and import taxes and additional fees levied by your local carrier, when imported into your country. Instead ebay will collect applicable fees at the time of sale.
Foreign buyers are responsible for all customs charges, duties, taxes and levies.
