SD DISK][ PLUS ROM BIOS V1.90N
Applicable product: SD DISK ][ PLUS card


Major Changes
SmartPort support in HDD mode
- Support for selected games that require SmartPort functionality
- Support for HDD images up to 512 MB
The existing ProDOS Block Device interface remains fully supported, so current programs and disk images can be used without any changes.
ROM BIOS V1.90N adds SmartPort and large-capacity HDD support while maintaining compatibility with existing software.
Updating the ROM BIOS requires replacing or reprogramming the ROM chip installed on the card.
Free ROM BIOS Update Service
When sending any of my products to me for repair or service, you may also include your SD DISK ][ PLUS card. I will update its ROM BIOS free of charge.
Shipping costs are not included.
ROM Chip by Mail
To receive a programmed ROM chip by mail, please contact me by email.
- ROM chip: US$2
- Worldwide shipping: US$15
Customers who wish to update the ROM themselves using a ROM programmer may also contact me by email to request the ROM image.
https://drive.google.com/file/d/1YRB_XfBnc6_3jNmanMdM22Zpq4D666pe/view?usp=sharing
For all other inquiries, please contact me by email.
Thank you.