64HDD Shop
System ROM Upgrades:
Enhanced Pwr-Load EPROM: - This is the enhanced version of the Pwr-Load EPROM and is only available pre-programmed (only non-enhanced code available on website). The enhanced features include:
  • optimised transfer routine (contained in ROM, not on disk)
  • works with multi-part programs (that use kernal calls)
  • loads large files such as captures /backups which load under I/O map
  • also speeds up SEQ and other byte-by-byte operations (special parallel ACPTR routine)
  • available concurrently with JiffyDOS (you need to pass the JD test to order this option)
  • EPROM has 2 or 3 kernals (CBM, Pwr-Load and if you have a older C64 and the above adaptor a third ROM of your choice - just email it to me)
  • allows combination of partition numbers and Pwr-Load prefix
  • routing of device #2 to the IEC bus for future 64HDD RS232 support
The standard C64 ROM is available at a flick of the switch should you want to return to a stock machine.

Pricing includes switch and adapter if required.

Upgrade voucher to re-program the EPROM if/when an upgrade is available
(you will need to cover the cost of return postage).

C64C, C128
Price: US$15

C128DCR
Price: US$19

Special order - please ask. C64 (24pin ver)
Price: US$29

plus US$6.70 postage

Kernal++ and Kernal++ with PwrLoad EPROMs: - This EPROM adds a built-in DOS wedge to your C64 by replacing its original kernal chip. A DOS wedge makes easy work of typing all those Commodore DOS commands. There are two versions - a standard version and a PwrLoad version. Both have the same functionality, but the PwrLoad version is designed for users of 64HDD who have a PwrLoad cable for fast disk loads. Click here to view the user manual.

The standard C64 ROM is available at a flick of the switch should you want to return to a stock machine.

Pricing includes switch and adapter if required.

Upgrade voucher to re-program the EPROM if/when an upgrade is available
(you will need to cover the cost of return postage).

C64C, C128
Price: US$13

C128DCR
Price: US$17

Special order - please ask. C64 (24pin ver)
Price: US$27

plus US$6.70 postage


Adaptor for 24pin to 28pin ROMs: - This adaptor allows you to ugrade your C64's kernal ROM. The adaptor is required if you have an older machine which uses 24pin chips for the Kernal, etc.

This particular design includes a three position switch that allows you to switch between 3 kernals if the appropriate ROM is installed. Even though the circuit for such an adaptor is published on this website, the adaptor can be fiddley to build.

Price: US$20

plus US$6.70 postage

Auto-RAMDOS for REUs: - This project adds an EPROM and SRAM to make RAMDOS more compatible and boot instantly on a REU attached to your C64. Click here to find out more.

Available as preprogrammed EPROM, IC Parts Kit, or supplied/installed.
Special order - please ask.

Price:

US$15 (EPROM)
US$22 (all chips)
plus US$6.70 postage

US$35 (Installed)
plus US$17.50 postage