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Communication protocols

This section describes the communication protocols implemented by Cahute, and used between CASIO calculators, or between a CASIO calculators and a host device.

• Rationales behind the communication protocols
  • Data or screen reception rationale
  • Data or screen sending rationale
  • Device control rationale
• CASIOLINK protocols – Serial protocols used by pre fx-9860G calculators
• CAS40 protocol – Serial protocol used by pre-1996 calculators
  • CAS40 packet format
  • CAS40 data types
  • CAS40 flows
• CAS50 protocol – Serial protocol used by calculators from 1996 to 2004
  • CAS50 packet format
  • CAS50 data types
  • CAS50 flows
• CAS100 protocol – Serial protocol used by AFX / Graph 100
  • CAS100 packet format
  • CAS100 data types
  • CAS100 flows
• CAS300 – Serial and USB protocol used by Classpad 300 / 330 (+)
  • CAS300 packet format
  • CAS300 commands
  • CAS300 flows
• Protocol 7.00 – Serial and USB protocol used by post fx-9860G calculators
  • Specific formats for Protocol 7.00
  • Protocol 7.00 packet format
  • Protocol 7.00 communication flows
  • Known Protocol 7.00 commands by CASIO
  • Known Protocol 7.00 command extensions in fxRemote
  • Protocol 7.00 use cases
  • Known hardware identifiers for Protocol 7.00
• Protocol 7.00 Screenstreaming – fx-9860G and fx-CG screenstreaming
  • Protocol 7.00 Screenstreaming packet format
  • Protocol 7.00 Screenstreaming communication flows
• USB Mass Storage (UMS) and proprietary extensions for fx-CG calculators
  • Custom SCSI commands for CASIO’s USB Mass Storage implementation
• USB detection for CASIO calculators
  • Vendor-specific USB device enabling
  • Driver detection on Microsoft Windows