83Plus:Ports:89

This port only exists on the the TI-84 Plus and the TI-84 Plus Silver Edition. On the standard TI-83 Plus, it acts as a shadow of port 01. On the TI-83 Plus Silver Edition, this port has no effect.

Synopsis

Port Number: 89h

Function: USB Input-Enabled Pipes

This port is a bitmap of which pipes in the A0h-A7h range are enabled for input. Similar to port 8A.

Read Values

• Bit 0: Probably always 0. (Just a guess)
• Bit 1: Set if pipe 1 is enabled for input.
• Bit 2: Set if pipe 2 is enabled for input.
• Bit 3: Set if pipe 3 is enabled for input.
• Bit 4: Hypothetically, set if pipe 4 is enabled for input.
• Bit 5: Hypothetically, set if pipe 5 is enabled for input.
• Bit 6: Hypothetically, set if pipe 6 is enabled for input.
• Bit 7: Hypothetically, set if pipe 7 is enabled for input.

Write Values

• No effect