# Difference between revisions of "83Plus:OS:OS 2.53MP Changes"

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== New Tokens == | == New Tokens == | ||

− | * AUTO Answer -- basic | + | * AUTO Answer -- basic [EF 3B] |

− | * CLASSIC -- basic | + | * CLASSIC -- basic [EF 38] |

− | * DEC Answer -- basic | + | * DEC Answer -- basic [EF 3C] |

− | * >F<>D -- swap between fraction and decimal | + | * >F<>D -- swap between fraction and decimal [EF 31] |

− | * FRAC Answer -- basic | + | * FRAC Answer -- basic [EF 3D] |

− | * logBASE( -- log to any base, logBASE(x,base | + | * logBASE( -- log to any base, logBASE(x,base [EF 34] |

− | * MATHPRINT -- basic | + | * MATHPRINT -- basic [EF 37] |

− | * n/d - normal fraction, numerator n/d denominator | + | * n/d - normal fraction, numerator n/d denominator [EF 2E] |

− | * >n/d<>Un/D -- swap between improper and proper fractions in MP | + | * >n/d<>Un/D -- swap between improper and proper fractions in MP [EF 30] |

− | * randIntNoRep( -- gives a list of random integers, with dimension high-low+1 randIntNoRep(low,high | + | * randIntNoRep( -- gives a list of random integers, with dimension high-low+1 randIntNoRep(low,high [EF 35] |

− | * remainder( -- essentially modulo, x % y, remainder(x,y | + | * remainder( -- essentially modulo, x % y, remainder(x,y [EF 32] |

− | * summation <sigma>( -- <sigma>(expression,variable,start,end | + | * summation <sigma>( -- <sigma>(expression,variable,start,end [EF 33] |

− | * Un/d -- mixed number, whole Un/d numerator n/d denominator | + | * Un/d -- mixed number, whole Un/d numerator n/d denominator [EF 2F] |

− | * ZFrac1/2, | + | * ZFrac1/2, -- delta-x,y = 1/2, graph centered [EF 18] |

− | * ZFrac1/3, | + | * ZFrac1/3, -- delta-x,y = 1/3, graph centered [EF 19] |

− | * ZFrac1/4, | + | * ZFrac1/4, -- delta-x,y = 1/4, graph centered [EF 1A] |

− | * ZFrac1/5, | + | * ZFrac1/5, -- delta-x,y = 1/5, graph centered [EF 1B] |

− | * ZFrac1/8, | + | * ZFrac1/8, -- delta-x,y = 1/8, graph centered [EF 1C] |

− | * ZFrac1/10, | + | * ZFrac1/10, -- delta-x,y = 1/10, graph centered [EF 1D] |

− | * ZQuadrant1, | + | * ZQuadrant1, [EF 17] |

* fraction related tokens | * fraction related tokens | ||

** _, EF2F, not the same as printing _. New font codepoint 0F5h. | ** _, EF2F, not the same as printing _. New font codepoint 0F5h. |

## Revision as of 20:34, 10 February 2010

IMPORTANT NOTE: The 2.53MP is a leaked beta. Please do not distribute it to people by calculator until TI makes the official release, slated for February 15. Use at your own risk.

I have recently realized that there is already an OS versions page. The two will be merged when the official release is made.

## Contents

# Added Features

- Math Print is TI's own pretty printing
- New menu Alpha+F1-F4 for use with Math Print
- In MP, press up to scroll through previous entries, which allows basic copy and paste.
- The Table screen now has an option for <delta>Tbl, which allows you to set the interval between the X entries of the table.
- New ZOptions under Zoom

## New Tokens

- AUTO Answer -- basic [EF 3B]
- CLASSIC -- basic [EF 38]
- DEC Answer -- basic [EF 3C]
- >F<>D -- swap between fraction and decimal [EF 31]
- FRAC Answer -- basic [EF 3D]
- logBASE( -- log to any base, logBASE(x,base [EF 34]
- MATHPRINT -- basic [EF 37]
- n/d - normal fraction, numerator n/d denominator [EF 2E]
- >n/d<>Un/D -- swap between improper and proper fractions in MP [EF 30]
- randIntNoRep( -- gives a list of random integers, with dimension high-low+1 randIntNoRep(low,high [EF 35]
- remainder( -- essentially modulo, x % y, remainder(x,y [EF 32]
- summation <sigma>( -- <sigma>(expression,variable,start,end [EF 33]
- Un/d -- mixed number, whole Un/d numerator n/d denominator [EF 2F]
- ZFrac1/2, -- delta-x,y = 1/2, graph centered [EF 18]
- ZFrac1/3, -- delta-x,y = 1/3, graph centered [EF 19]
- ZFrac1/4, -- delta-x,y = 1/4, graph centered [EF 1A]
- ZFrac1/5, -- delta-x,y = 1/5, graph centered [EF 1B]
- ZFrac1/8, -- delta-x,y = 1/8, graph centered [EF 1C]
- ZFrac1/10, -- delta-x,y = 1/10, graph centered [EF 1D]
- ZQuadrant1, [EF 17]
- fraction related tokens
- _, EF2F, not the same as printing _. New font codepoint 0F5h.
- /, EF2E, not the same as division /. New font codepoint 0F6h.

- box, EF1E. New font codepoint 0F7h.

## Flags

- 5, (iy+44h) controls math print. You should clear the screen if you change this flag.
- 0, (iy+48h) controls the fraction mode
- bits 1 and 4 of (iy+47h) are related to when the OS decides to format an answer as a fraction
- 4, (iy+45h): set this to disable the message about shortcut menus from Press-to-Test. Not affected by Reset Defaults, though Math Print is.

## Bcalls

96 new bcalls added.

- 5410 -- alpha menu reminder pop up

## Memory

- RAM page 3, $977E-$9A7D -- previous entries. Destroying this causes crashes.
- RAM page 3, $9A7E-$9D7D -- homescreen graph buffer. Zero after destroying to prevent flicker.

# Compatibility Issues

- Programs using the homescreen may be very broken. Users should disable Math Print before running them, and programs should clear the screen first thing.
- Programs that encounter an error on the graphscreen may end up with the graphscreen contents in the homescreen buffer
- In Omnicalc, parenthesis assistant does not work properly. (Display error)
- In Omnicalc's entries menu: Using the entries menu without MP symbols has some display issues, and when selecting an entry, it crashes.
- In Omnicalc's entries menu: With mathprint symbols in the entries log, there are serious display issues accompanied with a dramatic crash.
- Omnicalc's partial line clearing (always enabled) crashes or glitches when you try to use it in MP.
- Calcutil will not run at all correctly and will crash your calculator when you turn it off and back on.
- ld a,1 \ ld (appInfo+2),a \ bcall($50CB) no longer unlocks the flash ROM.

# Known Performance Issues

- Disp and Output may be up to 4x slower than on previous OS version when MathPrint is enabled (see TI-84+ OS v2.53 Leaked)
- When MathPrint is enabled, when you go to the "Y=" menu to type a function, it's displaying slowly the Y1, Y2, Y3, Y4 etc.

# Bugs

This is for bugs or strange functionality. Note the above "Compatibility Issues" section; use that for issues with third-party software.

- MathPrint Bug : When a list is displayed as a result, you can't take it back for you new entry : selecting it and pressing enter doesn't work
- Math Print can't handle overly complex expressions. If your expression is starting to require vertical scrolling, expect to encounter the old out-of-memory checkered box soon. Try to recall this expression and it won't get fully mathprintified.