Since writing the PBI BIOS for the Ultimate 1MB and Incognito in 2012, I found myself increasingly focused on developing original and re-implemented firmware for hard disk host adapters, culminating in a ground-up re-write of the entire U1MB ROM firmware in 2015.
 | Ultimate 1MB BIOS, PBI BIOS and SIDE Loader Alternative, completely rewritten firmware for the Ultimate 1MB. Includes configuration profiles, date/time settings, high-speed SIO driver, advanced hard disk control, and a high-speed XEX loader supporting multiple FAT partitions and recursive searching. |
 | Incognito BIOS, PBI BIOS and SIDE Loader Alternative, completely rewritten firmware for the Incognito. Includes configuration profiles, date/time settings, high-speed SIO driver, advanced hard disk control, and a high-speed XEX loader supporting multiple FAT partitions and recursive searching. |
 | 1088XEL/1088XLD Ultimate 1MB Firmware Ultimate 1MB firmware at the heart of the exciting 1088XEL and 1088XLD projects. All the features of the U1MB firmware plus V-Gate control, support for dual XEL-CF adapters, and much more. |
 | SIDE/SIDE2 XEX Loader The alternative XEX loader found in the U1MB and Incognito firmware, in stand-alone SIDE/SIDE2 cartridge format. Boasts multiple FAT support, high-speed loading, and a powerful recursive search facility. |
 | SIDE Loader and SDX for the AVG Cart The 'alt' SIDE Loader and SpartaDOS X ROM (with APT tools) in CAR format for the AVG Cart. |
 | KMK/JZ IDEa APT BIOS Bring your KMK/JZ IDEa hard disk host adapter into the APT age with this updated BIOS. Provides 100 per cent media compatibility with SIDE and Incognito. |