TI-83 Plus
----------

ldHLind - B_CALL 4009h
Inputs: HL
Outputs: HL contains (HL), A=L

GetBootVer - B_CALL 80B7h
Inputs: None
Outputs: A is major version, B is minor version.

ShRAcc - B_CALL 41D4h
Inputs: A
Outputs - High nibble of A is shifted to low nibble.

GetRomPage - B_CALL 4C45h
Inputs: None
Outputs: A contains the page swapped into 4000h-7FFFh

CompareStrings - B_CALL 801Eh
Inputs: HL & DE point to the strings to compare. A is the number of bytes to compare.
Outputs: Strings are compared, NZ returned if don't match. If match then Z returned.

HomeUp - B_CALL 4558h
Inputs: None
Outputs: (currow) and (curcol) set to upper left corner of screen.

IsA2ByteTok - B_CALL 42A3
Inputs: ?
Outputs: ?

ShLAcc - B_CALL 41D7
Inputs: A
Outputs: Lower nibble of A is shifted to the high nibble of A

GetHardwareVersion - B_CALL 80BA
Inputs: None
Outputs: A is 0 if on 83+, 1 if on SE.

DispBootVer - B_CALL 808A

Inputs: None
Outputs: Displays the BOOT version in large font in upper left corner of screen.

Get_NumKey - B_CALL 4C96
Inputs: None
Outputs: Waits for a number key (1-9) to be pressed. A contains _getcsc code of the key.