In my first 6303 based computer I used floppies for secondary storage. Even though it worked very well floppies are relatively small, fragile, slow and, above all, they are outdated. Today there are easier and more convenient ways of storing large amounts
PixelFlash CF Card Reader - Compact Flash Card Reader, USB 3 Card Reader for Computer - Tactical SuperSpeed CompactFlash Memory Adapter, Rugged Anti-Scratch Exterior Classic - No-Bend Pins, Black : Electronics
Compact Flash for CoolRunner™-II CPLDs. Quick Start Training Agenda Introduction What is Compact Flash? CoolRunner-II Implementation Block Diagram Applications. - ppt download
LV-66A - BVM - PDF Catalogs, Technical Documentation
OEM Instrument Controllers, Instrument Interface GUIs, Industrial Operator Interface Panels, MMI / HMI GUI Interfaces
MCP3008 - 8-Channel 10-Bit ADC With SPI Interface : ID 856 : $4.50 : Adafruit Industries, Unique & fun DIY electronics and kits
SC504 – Compact Flash (Z50Bus)
CompactFlash - Wikipedia
An 8-bit IDE interface @ Retroleum
Interfacing a CompactFlash on homebrew 8-bit computer! [Zeal 8-bit Computer]
A Complete Guide to Memory Cards
Build This 8-Bit Home Computer With Just 5 Chips - IEEE Spectrum
This bootable expansion card provides a Compact Flash card interface to 8-bit ISA systems such as PC/XT. Typically paired with a 64MB or 1GB CF card.
XT-CF-Mini Bootable 8-bit ISA CF Card Interface - XT-IDE
Interfacing a CompactFlash on homebrew 8-bit computer! [Zeal 8-bit Computer]